diff options
Diffstat (limited to 'actionpack/lib/action_view/helpers/form_helper.rb')
| -rw-r--r-- | actionpack/lib/action_view/helpers/form_helper.rb | 688 |
1 files changed, 278 insertions, 410 deletions
diff --git a/actionpack/lib/action_view/helpers/form_helper.rb b/actionpack/lib/action_view/helpers/form_helper.rb index d687866d0d..67f2abe509 100644 --- a/actionpack/lib/action_view/helpers/form_helper.rb +++ b/actionpack/lib/action_view/helpers/form_helper.rb @@ -2,12 +2,15 @@ require 'cgi' require 'action_view/helpers/date_helper' require 'action_view/helpers/tag_helper' require 'action_view/helpers/form_tag_helper' +require 'action_view/helpers/active_model_helper' +require 'action_view/helpers/tags' require 'active_support/core_ext/class/attribute' require 'active_support/core_ext/hash/slice' -require 'active_support/core_ext/module/method_names' require 'active_support/core_ext/object/blank' require 'active_support/core_ext/string/output_safety' require 'active_support/core_ext/array/extract_options' +require 'active_support/deprecation' +require 'active_support/core_ext/string/inflections' module ActionView # = Action View Form Helpers @@ -15,17 +18,28 @@ module ActionView # Form helpers are designed to make working with resources much easier # compared to using vanilla HTML. # - # Forms for models are created with +form_for+. That method yields a form - # builder that knows the model the form is about. The form builder is thus - # able to generate default values for input fields that correspond to model - # attributes, and also convenient names, IDs, endpoints, etc. + # Typically, a form designed to create or update a resource reflects the + # identity of the resource in several ways: (i) the url that the form is + # sent to (the form element's +action+ attribute) should result in a request + # being routed to the appropriate controller action (with the appropriate <tt>:id</tt> + # parameter in the case of an existing resource), (ii) input fields should + # be named in such a way that in the controller their values appear in the + # appropriate places within the +params+ hash, and (iii) for an existing record, + # when the form is initially displayed, input fields corresponding to attributes + # of the resource should show the current values of those attributes. # - # Conventions in the generated field names allow controllers to receive form - # data nicely structured in +params+ with no effort on your side. + # In Rails, this is usually achieved by creating the form using +form_for+ and + # a number of related helper methods. +form_for+ generates an appropriate <tt>form</tt> + # tag and yields a form builder object that knows the model the form is about. + # Input fields are created by calling methods defined on the form builder, which + # means they are able to generate the appropriate names and default values + # corresponding to the model attributes, as well as convenient IDs, etc. + # Conventions in the generated field names allow controllers to receive form data + # nicely structured in +params+ with no effort on your side. # # For example, to create a new person you typically set up a new instance of # +Person+ in the <tt>PeopleController#new</tt> action, <tt>@person</tt>, and - # pass it to +form_for+: + # in the view template pass that object to +form_for+: # # <%= form_for @person do |f| %> # <%= f.label :first_name %>: @@ -44,10 +58,10 @@ module ActionView # <input name="authenticity_token" type="hidden" value="NrOp5bsjoLRuK8IW5+dQEYjKGUJDe7TQoZVvq95Wteg=" /> # </div> # <label for="person_first_name">First name</label>: - # <input id="person_first_name" name="person[first_name]" size="30" type="text" /><br /> + # <input id="person_first_name" name="person[first_name]" type="text" /><br /> # # <label for="person_last_name">Last name</label>: - # <input id="person_last_name" name="person[last_name]" size="30" type="text" /><br /> + # <input id="person_last_name" name="person[last_name]" type="text" /><br /> # # <input name="commit" type="submit" value="Create Person" /> # </form> @@ -75,10 +89,10 @@ module ActionView # <input name="authenticity_token" type="hidden" value="NrOp5bsjoLRuK8IW5+dQEYjKGUJDe7TQoZVvq95Wteg=" /> # </div> # <label for="person_first_name">First name</label>: - # <input id="person_first_name" name="person[first_name]" size="30" type="text" value="John" /><br /> + # <input id="person_first_name" name="person[first_name]" type="text" value="John" /><br /> # # <label for="person_last_name">Last name</label>: - # <input id="person_last_name" name="person[last_name]" size="30" type="text" value="Smith" /><br /> + # <input id="person_last_name" name="person[last_name]" type="text" value="Smith" /><br /> # # <input name="commit" type="submit" value="Update Person" /> # </form> @@ -108,29 +122,14 @@ module ActionView object.respond_to?(:to_model) ? object.to_model : object end - # Creates a form and a scope around a specific model object that is used - # as a base for questioning about values for the fields. + # Creates a form that allows the user to create or update the attributes + # of a specific model object. # - # Rails provides succinct resource-oriented form generation with +form_for+ - # like this: - # - # <%= form_for @offer do |f| %> - # <%= f.label :version, 'Version' %>: - # <%= f.text_field :version %><br /> - # <%= f.label :author, 'Author' %>: - # <%= f.text_field :author %><br /> - # <%= f.submit %> - # <% end %> - # - # There, +form_for+ is able to generate the rest of RESTful form - # parameters based on introspection on the record, but to understand what - # it does we need to dig first into the alternative generic usage it is - # based upon. - # - # === Generic form_for - # - # The generic way to call +form_for+ yields a form builder around a - # model: + # The method can be used in several slightly different ways, depending on + # how much you wish to rely on Rails to infer automatically from the model + # how the form should be constructed. For a generic model object, a form + # can be created by passing +form_for+ a string or symbol representing + # the object we are concerned with: # # <%= form_for :person do |f| %> # First name: <%= f.text_field :first_name %><br /> @@ -140,35 +139,53 @@ module ActionView # <%= f.submit %> # <% end %> # - # There, the argument is a symbol or string with the name of the - # object the form is about. - # - # The form builder acts as a regular form helper that somehow carries the - # model. Thus, the idea is that + # The variable +f+ yielded to the block is a FormBuilder object that + # incorporates the knowledge about the model object represented by + # <tt>:person</tt> passed to +form_for+. Methods defined on the FormBuilder + # are used to generate fields bound to this model. Thus, for example, # # <%= f.text_field :first_name %> # - # gets expanded to + # will get expanded to # # <%= text_field :person, :first_name %> + # which results in an html <tt><input></tt> tag whose +name+ attribute is + # <tt>person[first_name]</tt>. This means that when the form is submitted, + # the value entered by the user will be available in the controller as + # <tt>params[:person][:first_name]</tt>. + # + # For fields generated in this way using the FormBuilder, + # if <tt>:person</tt> also happens to be the name of an instance variable + # <tt>@person</tt>, the default value of the field shown when the form is + # initially displayed (e.g. in the situation where you are editing an + # existing record) will be the value of the corresponding attribute of + # <tt>@person</tt>. # # The rightmost argument to +form_for+ is an - # optional hash of options: - # - # * <tt>:url</tt> - The URL the form is submitted to. It takes the same - # fields you pass to +url_for+ or +link_to+. In particular you may pass - # here a named route directly as well. Defaults to the current action. + # optional hash of options - + # + # * <tt>:url</tt> - The URL the form is to be submitted to. This may be + # represented in the same way as values passed to +url_for+ or +link_to+. + # So for example you may use a named route directly. When the model is + # represented by a string or symbol, as in the example above, if the + # <tt>:url</tt> option is not specified, by default the form will be + # sent back to the current url (We will describe below an alternative + # resource-oriented usage of +form_for+ in which the URL does not need + # to be specified explicitly). + # * <tt>:namespace</tt> - A namespace for your form to ensure uniqueness of + # id attributes on form elements. The namespace attribute will be prefixed + # with underscore on the generated HTML id. # * <tt>:html</tt> - Optional HTML attributes for the form tag. # # Also note that +form_for+ doesn't create an exclusive scope. It's still # possible to use both the stand-alone FormHelper methods and methods # from FormTagHelper. For example: # - # <%= form_for @person do |f| %> + # <%= form_for :person do |f| %> # First name: <%= f.text_field :first_name %> # Last name : <%= f.text_field :last_name %> # Biography : <%= text_area :person, :biography %> - # Admin? : <%= check_box_tag "person[admin]", @person.company.admin? %> + # Admin? : <%= check_box_tag "person[admin]", "1", @person.company.admin? %> # <%= f.submit %> # <% end %> # @@ -176,26 +193,65 @@ module ActionView # are designed to work with an object as base, like # FormOptionHelper#collection_select and DateHelper#datetime_select. # - # === Resource-oriented style + # === #form_for with a model object + # + # In the examples above, the object to be created or edited was + # represented by a symbol passed to +form_for+, and we noted that + # a string can also be used equivalently. It is also possible, however, + # to pass a model object itself to +form_for+. For example, if <tt>@post</tt> + # is an existing record you wish to edit, you can create the form using + # + # <%= form_for @post do |f| %> + # ... + # <% end %> + # + # This behaves in almost the same way as outlined previously, with a + # couple of small exceptions. First, the prefix used to name the input + # elements within the form (hence the key that denotes them in the +params+ + # hash) is actually derived from the object's _class_, e.g. <tt>params[:post]</tt> + # if the object's class is +Post+. However, this can be overwritten using + # the <tt>:as</tt> option, e.g. - + # + # <%= form_for(@person, :as => :client) do |f| %> + # ... + # <% end %> + # + # would result in <tt>params[:client]</tt>. # - # As we said above, in addition to manually configuring the +form_for+ - # call, you can rely on automated resource identification, which will use - # the conventions and named routes of that approach. This is the - # preferred way to use +form_for+ nowadays. + # Secondly, the field values shown when the form is initially displayed + # are taken from the attributes of the object passed to +form_for+, + # regardless of whether the object is an instance + # variable. So, for example, if we had a _local_ variable +post+ + # representing an existing record, + # + # <%= form_for post do |f| %> + # ... + # <% end %> # - # For example, if <tt>@post</tt> is an existing record you want to edit + # would produce a form with fields whose initial state reflect the current + # values of the attributes of +post+. + # + # === Resource-oriented style + # + # In the examples just shown, although not indicated explicitly, we still + # need to use the <tt>:url</tt> option in order to specify where the + # form is going to be sent. However, further simplification is possible + # if the record passed to +form_for+ is a _resource_, i.e. it corresponds + # to a set of RESTful routes, e.g. defined using the +resources+ method + # in <tt>config/routes.rb</tt>. In this case Rails will simply infer the + # appropriate URL from the record itself. For example, # # <%= form_for @post do |f| %> # ... # <% end %> # - # is equivalent to something like: + # is then equivalent to something like: # # <%= form_for @post, :as => :post, :url => post_path(@post), :method => :put, :html => { :class => "edit_post", :id => "edit_post_45" } do |f| %> # ... # <% end %> # - # And for new records + # And for a new record # # <%= form_for(Post.new) do |f| %> # ... @@ -207,7 +263,7 @@ module ActionView # ... # <% end %> # - # You can also overwrite the individual conventions, like this: + # However you can still overwrite individual conventions, such as: # # <%= form_for(@post, :url => super_posts_path) do |f| %> # ... @@ -219,13 +275,6 @@ module ActionView # ... # <% end %> # - # If you have an object that needs to be represented as a different - # parameter, like a Person that acts as a Client: - # - # <%= form_for(@person, :as => :client) do |f| %> - # ... - # <% end %> - # # For namespaced routes, like +admin_post_url+: # # <%= form_for([:admin, @post]) do |f| %> @@ -246,11 +295,11 @@ module ActionView # # You can force the form to use the full array of HTTP verbs by setting # - # :method => (:get|:post|:put|:delete) + # :method => (:get|:post|:patch|:put|:delete) # - # in the options hash. If the verb is not GET or POST, which are natively supported by HTML forms, the - # form will be set to POST and a hidden input called _method will carry the intended verb for the server - # to interpret. + # in the options hash. If the verb is not GET or POST, which are natively + # supported by HTML forms, the form will be set to POST and a hidden input + # called _method will carry the intended verb for the server to interpret. # # === Unobtrusive JavaScript # @@ -362,34 +411,33 @@ module ActionView else object = record.is_a?(Array) ? record.last : record object_name = options[:as] || ActiveModel::Naming.param_key(object) - apply_form_for_options!(record, options) + apply_form_for_options!(record, object, options) end options[:html][:remote] = options.delete(:remote) if options.has_key?(:remote) options[:html][:method] = options.delete(:method) if options.has_key?(:method) options[:html][:authenticity_token] = options.delete(:authenticity_token) - builder = options[:parent_builder] = instantiate_builder(object_name, object, options, &proc) + builder = options[:parent_builder] = instantiate_builder(object_name, object, options) fields_for = fields_for(object_name, object, options, &proc) default_options = builder.multipart? ? { :multipart => true } : {} - output = form_tag(options.delete(:url) || {}, default_options.merge!(options.delete(:html))) - output << fields_for - output.safe_concat('</form>') + default_options.merge!(options.delete(:html)) + + form_tag(options.delete(:url) || {}, default_options) { fields_for } end - def apply_form_for_options!(object_or_array, options) #:nodoc: - object = object_or_array.is_a?(Array) ? object_or_array.last : object_or_array + def apply_form_for_options!(record, object, options) #:nodoc: object = convert_to_model(object) as = options[:as] - action, method = object.respond_to?(:persisted?) && object.persisted? ? [:edit, :put] : [:new, :post] + action, method = object.respond_to?(:persisted?) && object.persisted? ? [:edit, :patch] : [:new, :post] options[:html].reverse_merge!( - :class => as ? "#{as}_#{action}" : dom_class(object, action), - :id => as ? "#{as}_#{action}" : dom_id(object, action), + :class => as ? "#{action}_#{as}" : dom_class(object, action), + :id => as ? "#{action}_#{as}" : [options[:namespace], dom_id(object, action)].compact.join("_").presence, :method => method ) - options[:url] ||= polymorphic_path(object_or_array, :format => options.delete(:format)) + options[:url] ||= polymorphic_path(record, :format => options.delete(:format)) end private :apply_form_for_options! @@ -399,30 +447,59 @@ module ActionView # # === Generic Examples # + # Although the usage and purpose of +field_for+ is similar to +form_for+'s, + # its method signature is slightly different. Like +form_for+, it yields + # a FormBuilder object associated with a particular model object to a block, + # and within the block allows methods to be called on the builder to + # generate fields associated with the model object. Fields may reflect + # a model object in two ways - how they are named (hence how submitted + # values appear within the +params+ hash in the controller) and what + # default values are shown when the form the fields appear in is first + # displayed. In order for both of these features to be specified independently, + # both an object name (represented by either a symbol or string) and the + # object itself can be passed to the method separately - + # # <%= form_for @person do |person_form| %> # First name: <%= person_form.text_field :first_name %> # Last name : <%= person_form.text_field :last_name %> # - # <%= fields_for @person.permission do |permission_fields| %> + # <%= fields_for :permission, @person.permission do |permission_fields| %> # Admin? : <%= permission_fields.check_box :admin %> # <% end %> # # <%= f.submit %> # <% end %> # - # ...or if you have an object that needs to be represented as a different - # parameter, like a Client that acts as a Person: + # In this case, the checkbox field will be represented by an HTML +input+ + # tag with the +name+ attribute <tt>permission[admin]</tt>, and the submitted + # value will appear in the controller as <tt>params[:permission][:admin]</tt>. + # If <tt>@person.permission</tt> is an existing record with an attribute + # +admin+, the initial state of the checkbox when first displayed will + # reflect the value of <tt>@person.permission.admin</tt>. + # + # Often this can be simplified by passing just the name of the model + # object to +fields_for+ - # - # <%= fields_for :person, @client do |permission_fields| %> + # <%= fields_for :permission do |permission_fields| %> # Admin?: <%= permission_fields.check_box :admin %> # <% end %> # - # ...or if you don't have an object, just a name of the parameter: + # ...in which case, if <tt>:permission</tt> also happens to be the name of an + # instance variable <tt>@permission</tt>, the initial state of the input + # field will reflect the value of that variable's attribute <tt>@permission.admin</tt>. # - # <%= fields_for :person do |permission_fields| %> + # Alternatively, you can pass just the model object itself (if the first + # argument isn't a string or symbol +fields_for+ will realize that the + # name has been omitted) - + # + # <%= fields_for @person.permission do |permission_fields| %> # Admin?: <%= permission_fields.check_box :admin %> # <% end %> # + # and +fields_for+ will derive the required name of the field from the + # _class_ of the model object, e.g. if <tt>@person.permission</tt>, is + # of class +Permission+, the field will still be named <tt>permission[admin]</tt>. + # # Note: This also works for the methods in FormOptionHelper and # DateHelper that are designed to work with an object as base, like # FormOptionHelper#collection_select and DateHelper#datetime_select. @@ -597,8 +674,21 @@ module ActionView # <% end %> # ... # <% end %> + # + # When a collection is used you might want to know the index of each + # object into the array. For this purpose, the <tt>index</tt> method + # is available in the FormBuilder object. + # + # <%= form_for @person do |person_form| %> + # ... + # <%= person_form.fields_for :projects do |project_fields| %> + # Project #<%= project_fields.index %> + # ... + # <% end %> + # ... + # <% end %> def fields_for(record_name, record_object = nil, options = {}, &block) - builder = instantiate_builder(record_name, record_object, options, &block) + builder = instantiate_builder(record_name, record_object, options) output = capture(builder, &block) output.concat builder.hidden_field(:id) if output && options[:hidden_field_id] && !builder.emitted_hidden_id? output @@ -652,16 +742,7 @@ module ActionView # 'Accept <a href="/terms">Terms</a>.'.html_safe # end def label(object_name, method, content_or_options = nil, options = nil, &block) - content_is_options = content_or_options.is_a?(Hash) - if content_is_options || block_given? - options = content_or_options if content_is_options - text = nil - else - text = content_or_options - end - - options ||= {} - InstanceTag.new(object_name, method, self, options.delete(:object)).to_label_tag(text, options, &block) + Tags::Label.new(object_name, method, self, content_or_options, options).render(&block) end # Returns an input tag of the "text" type tailored for accessing a specified attribute (identified by +method+) on an object @@ -683,7 +764,7 @@ module ActionView # # => <input type="text" id="snippet_code" name="snippet[code]" size="20" value="#{@snippet.code}" class="code_input" /> # def text_field(object_name, method, options = {}) - InstanceTag.new(object_name, method, self, options.delete(:object)).to_input_field_tag("text", options) + Tags::TextField.new(object_name, method, self, options).render end # Returns an input tag of the "password" type tailored for accessing a specified attribute (identified by +method+) on an object @@ -705,7 +786,7 @@ module ActionView # # => <input type="password" id="account_pin" name="account[pin]" size="20" class="form_input" /> # def password_field(object_name, method, options = {}) - InstanceTag.new(object_name, method, self, options.delete(:object)).to_input_field_tag("password", { :value => nil }.merge!(options)) + Tags::PasswordField.new(object_name, method, self, options).render end # Returns a hidden input tag tailored for accessing a specified attribute (identified by +method+) on an object @@ -723,7 +804,7 @@ module ActionView # hidden_field(:user, :token) # # => <input type="hidden" id="user_token" name="user[token]" value="#{@user.token}" /> def hidden_field(object_name, method, options = {}) - InstanceTag.new(object_name, method, self, options.delete(:object)).to_input_field_tag("hidden", options) + Tags::HiddenField.new(object_name, method, self, options).render end # Returns a file upload input tag tailored for accessing a specified attribute (identified by +method+) on an object @@ -744,7 +825,7 @@ module ActionView # # => <input type="file" id="attachment_file" name="attachment[file]" class="file_input" /> # def file_field(object_name, method, options = {}) - InstanceTag.new(object_name, method, self, options.delete(:object)).to_input_field_tag("file", options.update({:size => nil})) + Tags::FileField.new(object_name, method, self, options).render end # Returns a textarea opening and closing tag set tailored for accessing a specified attribute (identified by +method+) @@ -772,7 +853,7 @@ module ActionView # # #{@entry.body} # # </textarea> def text_area(object_name, method, options = {}) - InstanceTag.new(object_name, method, self, options.delete(:object)).to_text_area_tag(options) + Tags::TextArea.new(object_name, method, self, options).render end # Returns a checkbox tag tailored for accessing a specified attribute (identified by +method+) on an object @@ -822,7 +903,7 @@ module ActionView # # Let's say that @post.validated? is 1: # check_box("post", "validated") # # => <input name="post[validated]" type="hidden" value="0" /> - # # <input type="checkbox" id="post_validated" name="post[validated]" value="1" /> + # # <input checked="checked" type="checkbox" id="post_validated" name="post[validated]" value="1" /> # # # Let's say that @puppy.gooddog is "no": # check_box("puppy", "gooddog", {}, "yes", "no") @@ -834,7 +915,7 @@ module ActionView # # <input type="checkbox" class="eula_check" id="eula_accepted" name="eula[accepted]" value="yes" /> # def check_box(object_name, method, options = {}, checked_value = "1", unchecked_value = "0") - InstanceTag.new(object_name, method, self, options.delete(:object)).to_check_box_tag(options, checked_value, unchecked_value) + Tags::CheckBox.new(object_name, method, self, checked_value, unchecked_value, options).render end # Returns a radio button tag for accessing a specified attribute (identified by +method+) on an object @@ -856,7 +937,7 @@ module ActionView # # => <input type="radio" id="user_receive_newsletter_yes" name="user[receive_newsletter]" value="yes" /> # # <input type="radio" id="user_receive_newsletter_no" name="user[receive_newsletter]" value="no" checked="checked" /> def radio_button(object_name, method, tag_value, options = {}) - InstanceTag.new(object_name, method, self, options.delete(:object)).to_radio_button_tag(tag_value, options) + Tags::RadioButton.new(object_name, method, self, tag_value, options).render end # Returns an input of type "search" for accessing a specified attribute (identified by +method+) on an object @@ -866,64 +947,69 @@ module ActionView # ==== Examples # # search_field(:user, :name) - # # => <input id="user_name" name="user[name]" size="30" type="search" /> + # # => <input id="user_name" name="user[name]" type="search" /> # search_field(:user, :name, :autosave => false) - # # => <input autosave="false" id="user_name" name="user[name]" size="30" type="search" /> + # # => <input autosave="false" id="user_name" name="user[name]" type="search" /> # search_field(:user, :name, :results => 3) - # # => <input id="user_name" name="user[name]" results="3" size="30" type="search" /> + # # => <input id="user_name" name="user[name]" results="3" type="search" /> # # Assume request.host returns "www.example.com" # search_field(:user, :name, :autosave => true) - # # => <input autosave="com.example.www" id="user_name" name="user[name]" results="10" size="30" type="search" /> + # # => <input autosave="com.example.www" id="user_name" name="user[name]" results="10" type="search" /> # search_field(:user, :name, :onsearch => true) - # # => <input id="user_name" incremental="true" name="user[name]" onsearch="true" size="30" type="search" /> + # # => <input id="user_name" incremental="true" name="user[name]" onsearch="true" type="search" /> # search_field(:user, :name, :autosave => false, :onsearch => true) - # # => <input autosave="false" id="user_name" incremental="true" name="user[name]" onsearch="true" size="30" type="search" /> + # # => <input autosave="false" id="user_name" incremental="true" name="user[name]" onsearch="true" type="search" /> # search_field(:user, :name, :autosave => true, :onsearch => true) - # # => <input autosave="com.example.www" id="user_name" incremental="true" name="user[name]" onsearch="true" results="10" size="30" type="search" /> + # # => <input autosave="com.example.www" id="user_name" incremental="true" name="user[name]" onsearch="true" results="10" type="search" /> # def search_field(object_name, method, options = {}) - options = options.stringify_keys - - if options["autosave"] - if options["autosave"] == true - options["autosave"] = request.host.split(".").reverse.join(".") - end - options["results"] ||= 10 - end - - if options["onsearch"] - options["incremental"] = true unless options.has_key?("incremental") - end - - InstanceTag.new(object_name, method, self, options.delete("object")).to_input_field_tag("search", options) + Tags::SearchField.new(object_name, method, self, options).render end # Returns a text_field of type "tel". # # telephone_field("user", "phone") - # # => <input id="user_phone" name="user[phone]" size="30" type="tel" /> + # # => <input id="user_phone" name="user[phone]" type="tel" /> # def telephone_field(object_name, method, options = {}) - InstanceTag.new(object_name, method, self, options.delete(:object)).to_input_field_tag("tel", options) + Tags::TelField.new(object_name, method, self, options).render end alias phone_field telephone_field + # Returns a text_field of type "date". + # + # date_field("user", "born_on") + # # => <input id="user_born_on" name="user[born_on]" type="date" /> + # + # The default value is generated by trying to call "to_date" + # on the object's value, which makes it behave as expected for instances + # of DateTime and ActiveSupport::TimeWithZone. You can still override that + # by passing the "value" option explicitly, e.g. + # + # @user.born_on = Date.new(1984, 1, 27) + # date_field("user", "born_on", value: "1984-05-12") + # # => <input id="user_born_on" name="user[born_on]" type="date" value="1984-05-12" /> + # + def date_field(object_name, method, options = {}) + Tags::DateField.new(object_name, method, self, options).render + end + # Returns a text_field of type "url". # # url_field("user", "homepage") - # # => <input id="user_homepage" size="30" name="user[homepage]" type="url" /> + # # => <input id="user_homepage" name="user[homepage]" type="url" /> # def url_field(object_name, method, options = {}) - InstanceTag.new(object_name, method, self, options.delete(:object)).to_input_field_tag("url", options) + Tags::UrlField.new(object_name, method, self, options).render end # Returns a text_field of type "email". # # email_field("user", "address") - # # => <input id="user_address" size="30" name="user[address]" type="email" /> + # # => <input id="user_address" name="user[address]" type="email" /> # def email_field(object_name, method, options = {}) - InstanceTag.new(object_name, method, self, options.delete(:object)).to_input_field_tag("email", options) + Tags::EmailField.new(object_name, method, self, options).render end # Returns an input tag of type "number". @@ -931,7 +1017,7 @@ module ActionView # ==== Options # * Accepts same options as number_field_tag def number_field(object_name, method, options = {}) - InstanceTag.new(object_name, method, self, options.delete(:object)).to_number_field_tag("number", options) + Tags::NumberField.new(object_name, method, self, options).render end # Returns an input tag of type "range". @@ -939,12 +1025,12 @@ module ActionView # ==== Options # * Accepts same options as range_field_tag def range_field(object_name, method, options = {}) - InstanceTag.new(object_name, method, self, options.delete(:object)).to_number_field_tag("range", options) + Tags::RangeField.new(object_name, method, self, options).render end private - def instantiate_builder(record_name, record_object, options, &block) + def instantiate_builder(record_name, record_object, options) case record_name when String, Symbol object = record_object @@ -954,282 +1040,24 @@ module ActionView object_name = ActiveModel::Naming.param_key(object) end - builder = options[:builder] || ActionView::Base.default_form_builder - builder.new(object_name, object, self, options, block) - end - end - - class InstanceTag - include Helpers::CaptureHelper, Context, Helpers::TagHelper, Helpers::FormTagHelper - - attr_reader :object, :method_name, :object_name - - DEFAULT_FIELD_OPTIONS = { "size" => 30 } - DEFAULT_RADIO_OPTIONS = { } - DEFAULT_TEXT_AREA_OPTIONS = { "cols" => 40, "rows" => 20 } - - def initialize(object_name, method_name, template_object, object = nil) - @object_name, @method_name = object_name.to_s.dup, method_name.to_s.dup - @template_object = template_object - @object_name.sub!(/\[\]$/,"") || @object_name.sub!(/\[\]\]$/,"]") - @object = retrieve_object(object) - @auto_index = retrieve_autoindex(Regexp.last_match.pre_match) if Regexp.last_match - end - - def to_label_tag(text = nil, options = {}, &block) - options = options.stringify_keys - tag_value = options.delete("value") - name_and_id = options.dup - - if name_and_id["for"] - name_and_id["id"] = name_and_id["for"] - else - name_and_id.delete("id") - end - - add_default_name_and_id_for_value(tag_value, name_and_id) - options.delete("index") - options["for"] ||= name_and_id["id"] - - if block_given? - label_tag(name_and_id["id"], options, &block) - else - content = if text.blank? - object_name.gsub!(/\[(.*)_attributes\]\[\d\]/, '.\1') - method_and_value = tag_value.present? ? "#{method_name}.#{tag_value}" : method_name - - if object.respond_to?(:to_model) - key = object.class.model_name.i18n_key - i18n_default = ["#{key}.#{method_and_value}".to_sym, ""] - end - - i18n_default ||= "" - I18n.t("#{object_name}.#{method_and_value}", :default => i18n_default, :scope => "helpers.label").presence - else - text.to_s - end - - content ||= if object && object.class.respond_to?(:human_attribute_name) - object.class.human_attribute_name(method_name) - end - - content ||= method_name.humanize - - label_tag(name_and_id["id"], content, options) + builder = options[:builder] || default_form_builder + builder.new(object_name, object, self, options) end - end - def to_input_field_tag(field_type, options = {}) - options = options.stringify_keys - options["size"] = options["maxlength"] || DEFAULT_FIELD_OPTIONS["size"] unless options.key?("size") - options = DEFAULT_FIELD_OPTIONS.merge(options) - if field_type == "hidden" - options.delete("size") - end - options["type"] ||= field_type - options["value"] = options.fetch("value"){ value_before_type_cast(object) } unless field_type == "file" - options["value"] &&= ERB::Util.html_escape(options["value"]) - add_default_name_and_id(options) - tag("input", options) - end - - def to_number_field_tag(field_type, options = {}) - options = options.stringify_keys - options['size'] ||= nil - - if range = options.delete("in") || options.delete("within") - options.update("min" => range.min, "max" => range.max) - end - to_input_field_tag(field_type, options) - end - - def to_radio_button_tag(tag_value, options = {}) - options = DEFAULT_RADIO_OPTIONS.merge(options.stringify_keys) - options["type"] = "radio" - options["value"] = tag_value - if options.has_key?("checked") - cv = options.delete "checked" - checked = cv == true || cv == "checked" - else - checked = self.class.radio_button_checked?(value(object), tag_value) - end - options["checked"] = "checked" if checked - add_default_name_and_id_for_value(tag_value, options) - tag("input", options) - end - - def to_text_area_tag(options = {}) - options = DEFAULT_TEXT_AREA_OPTIONS.merge(options.stringify_keys) - add_default_name_and_id(options) - - if size = options.delete("size") - options["cols"], options["rows"] = size.split("x") if size.respond_to?(:split) - end - - content_tag("textarea", ERB::Util.html_escape(options.delete('value') || value_before_type_cast(object)), options) - end - - def to_check_box_tag(options = {}, checked_value = "1", unchecked_value = "0") - options = options.stringify_keys - options["type"] = "checkbox" - options["value"] = checked_value - if options.has_key?("checked") - cv = options.delete "checked" - checked = cv == true || cv == "checked" - else - checked = self.class.check_box_checked?(value(object), checked_value) - end - options["checked"] = "checked" if checked - if options["multiple"] - add_default_name_and_id_for_value(checked_value, options) - options.delete("multiple") - else - add_default_name_and_id(options) - end - hidden = tag("input", "name" => options["name"], "type" => "hidden", "value" => options['disabled'] && checked ? checked_value : unchecked_value) - checkbox = tag("input", options) - (hidden + checkbox).html_safe - end - - def to_boolean_select_tag(options = {}) - options = options.stringify_keys - add_default_name_and_id(options) - value = value(object) - tag_text = "<select" - tag_text << tag_options(options) - tag_text << "><option value=\"false\"" - tag_text << " selected" if value == false - tag_text << ">False</option><option value=\"true\"" - tag_text << " selected" if value - tag_text << ">True</option></select>" - end - - def to_content_tag(tag_name, options = {}) - content_tag(tag_name, value(object), options) - end - - def retrieve_object(object) - if object - object - elsif @template_object.instance_variable_defined?("@#{@object_name}") - @template_object.instance_variable_get("@#{@object_name}") - end - rescue NameError - # As @object_name may contain the nested syntax (item[subobject]) we need to fallback to nil. - nil - end - - def retrieve_autoindex(pre_match) - object = self.object || @template_object.instance_variable_get("@#{pre_match}") - if object && object.respond_to?(:to_param) - object.to_param - else - raise ArgumentError, "object[] naming but object param and @object var don't exist or don't respond to to_param: #{object.inspect}" - end - end - - def value(object) - self.class.value(object, @method_name) - end - - def value_before_type_cast(object) - self.class.value_before_type_cast(object, @method_name) - end - - class << self - def value(object, method_name) - object.send method_name if object - end - - def value_before_type_cast(object, method_name) - unless object.nil? - object.respond_to?(method_name + "_before_type_cast") ? - object.send(method_name + "_before_type_cast") : - object.send(method_name) - end - end - - def check_box_checked?(value, checked_value) - case value - when TrueClass, FalseClass - value - when NilClass - false - when Integer - value != 0 - when String - value == checked_value - when Array - value.include?(checked_value) - else - value.to_i != 0 - end - end - - def radio_button_checked?(value, checked_value) - value.to_s == checked_value.to_s - end - end - - private - def add_default_name_and_id_for_value(tag_value, options) - unless tag_value.nil? - pretty_tag_value = tag_value.to_s.gsub(/\s/, "_").gsub(/[^-\w]/, "").downcase - specified_id = options["id"] - add_default_name_and_id(options) - options["id"] += "_#{pretty_tag_value}" if specified_id.blank? && options["id"].present? - else - add_default_name_and_id(options) - end - end - - def add_default_name_and_id(options) - if options.has_key?("index") - options["name"] ||= tag_name_with_index(options["index"]) - options["id"] = options.fetch("id"){ tag_id_with_index(options["index"]) } - options.delete("index") - elsif defined?(@auto_index) - options["name"] ||= tag_name_with_index(@auto_index) - options["id"] = options.fetch("id"){ tag_id_with_index(@auto_index) } - else - options["name"] ||= tag_name + (options['multiple'] ? '[]' : '') - options["id"] = options.fetch("id"){ tag_id } - end - end - - def tag_name - "#{@object_name}[#{sanitized_method_name}]" - end - - def tag_name_with_index(index) - "#{@object_name}[#{index}][#{sanitized_method_name}]" - end - - def tag_id - "#{sanitized_object_name}_#{sanitized_method_name}" - end - - def tag_id_with_index(index) - "#{sanitized_object_name}_#{index}_#{sanitized_method_name}" - end - - def sanitized_object_name - @sanitized_object_name ||= @object_name.gsub(/\]\[|[^-a-zA-Z0-9:.]/, "_").sub(/_$/, "") - end - - def sanitized_method_name - @sanitized_method_name ||= @method_name.sub(/\?$/,"") + def default_form_builder + builder = ActionView::Base.default_form_builder + builder.respond_to?(:constantize) ? builder.constantize : builder end end class FormBuilder # The methods which wrap a form helper call. class_attribute :field_helpers - self.field_helpers = FormHelper.instance_method_names - %w(form_for convert_to_model) + self.field_helpers = FormHelper.instance_methods - [:form_for, :convert_to_model] attr_accessor :object_name, :object, :options - attr_reader :multipart, :parent_builder + attr_reader :multipart, :parent_builder, :index alias :multipart? :multipart def multipart=(multipart) @@ -1249,11 +1077,16 @@ module ActionView self end - def initialize(object_name, object, template, options, proc) + def initialize(object_name, object, template, options, block=nil) + if block + ActiveSupport::Deprecation.warn( + "Giving a block to FormBuilder is deprecated and has no effect anymore.") + end + @nested_child_index = {} - @object_name, @object, @template, @options, @proc = object_name, object, template, options, proc + @object_name, @object, @template, @options = object_name, object, template, options @parent_builder = options[:parent_builder] - @default_options = @options ? @options.slice(:index) : {} + @default_options = @options ? @options.slice(:index, :namespace) : {} if @object_name.to_s.match(/\[\]$/) if object ||= @template.instance_variable_get("@#{Regexp.last_match.pre_match}") and object.respond_to?(:to_param) @auto_index = object.to_param @@ -1262,9 +1095,10 @@ module ActionView end end @multipart = nil + @index = options[:index] || options[:child_index] end - (field_helpers - %w(label check_box radio_button fields_for hidden_field file_field)).each do |selector| + (field_helpers - [:label, :check_box, :radio_button, :fields_for, :hidden_field, :file_field]).each do |selector| class_eval <<-RUBY_EVAL, __FILE__, __LINE__ + 1 def #{selector}(method, options = {}) # def text_field(method, options = {}) @template.send( # @template.send( @@ -1280,6 +1114,7 @@ module ActionView fields_options, record_object = record_object, nil if record_object.is_a?(Hash) && record_object.extractable_options? fields_options[:builder] ||= options[:builder] fields_options[:parent_builder] = self + fields_options[:namespace] = options[:namespace] case record_name when String, Symbol @@ -1292,12 +1127,14 @@ module ActionView end index = if options.has_key?(:index) - "[#{options[:index]}]" + options[:index] elsif defined?(@auto_index) self.object_name = @object_name.to_s.sub(/\[\]$/,"") - "[#{@auto_index}]" + @auto_index end - record_name = "#{object_name}#{index}[#{record_name}]" + + record_name = index ? "#{object_name}[#{index}][#{record_name}]" : "#{object_name}[#{record_name}]" + fields_options[:child_index] = index @template.fields_for(record_name, record_object, fields_options, &block) end @@ -1357,6 +1194,39 @@ module ActionView @template.submit_tag(value, options) end + # Add the submit button for the given form. When no value is given, it checks + # if the object is a new resource or not to create the proper label: + # + # <%= form_for @post do |f| %> + # <%= f.button %> + # <% end %> + # + # In the example above, if @post is a new record, it will use "Create Post" as + # button label, otherwise, it uses "Update Post". + # + # Those labels can be customized using I18n, under the helpers.submit key + # (the same as submit helper) and accept the %{model} as translation interpolation: + # + # en: + # helpers: + # submit: + # create: "Create a %{model}" + # update: "Confirm changes to %{model}" + # + # It also searches for a key specific for the given object: + # + # en: + # helpers: + # submit: + # post: + # create: "Add %{model}" + # + def button(value=nil, options={}) + value, options = nil, value if value.is_a?(Hash) + value ||= submit_default_value + @template.button_tag(value, options) + end + def emitted_hidden_id? @emitted_hidden_id ||= nil end @@ -1402,7 +1272,8 @@ module ActionView explicit_child_index = options[:child_index] output = ActiveSupport::SafeBuffer.new association.each do |child| - output << fields_for_nested_model("#{name}[#{explicit_child_index || nested_child_index(name)}]", child, options, block) + options[:child_index] = nested_child_index(name) unless explicit_child_index + output << fields_for_nested_model("#{name}[#{options[:child_index]}]", child, options, block) end output elsif association @@ -1431,9 +1302,6 @@ module ActionView end ActiveSupport.on_load(:action_view) do - class ActionView::Base - cattr_accessor :default_form_builder - @@default_form_builder = ::ActionView::Helpers::FormBuilder - end + cattr_accessor(:default_form_builder) { ::ActionView::Helpers::FormBuilder } end end |