diff options
Diffstat (limited to 'actionpack/lib/action_view/helpers')
| -rw-r--r-- | actionpack/lib/action_view/helpers/active_record_helper.rb | 36 | ||||
| -rw-r--r-- | actionpack/lib/action_view/helpers/debug_helper.rb | 10 |
2 files changed, 28 insertions, 18 deletions
diff --git a/actionpack/lib/action_view/helpers/active_record_helper.rb b/actionpack/lib/action_view/helpers/active_record_helper.rb index dcaf54be46..97ddc41c7e 100644 --- a/actionpack/lib/action_view/helpers/active_record_helper.rb +++ b/actionpack/lib/action_view/helpers/active_record_helper.rb @@ -13,17 +13,18 @@ module ActionView # is a great of making the record quickly available for editing, but likely to prove lackluster for a complicated real-world form. # In that case, it's better to use the input method and the specialized form methods in link:classes/ActionView/Helpers/FormHelper.html module ActiveRecordHelper - # Returns a default input tag for the type of object returned by the method. Example - # (title is a VARCHAR column and holds "Hello World"): + # Returns a default input tag for the type of object returned by the method. For example, let's say you have a model + # that has an attribute +title+ of type VARCHAR column, and this instance holds "Hello World": # input("post", "title") => # <input id="post_title" name="post[title]" size="30" type="text" value="Hello World" /> def input(record_name, method, options = {}) InstanceTag.new(record_name, method, self).to_tag(options) end - # Returns an entire form with input tags and everything for a specified Active Record object. Example - # (post is a new record that has a title using VARCHAR and a body using TEXT): - # form("post") => + # Returns an entire form with all needed input tags for a specified Active Record object. For example, let's say you + # have a table model <tt>Post</tt> with attributes named <tt>title</tt> of type <tt>VARCHAR</tt> and <tt>body</tt> of type <tt>TEXT</tt>: + # form("post") + # That line would yield a form like the following: # <form action='/post/create' method='post'> # <p> # <label for="post_title">Title</label><br /> @@ -32,14 +33,13 @@ module ActionView # <p> # <label for="post_body">Body</label><br /> # <textarea cols="40" id="post_body" name="post[body]" rows="20"> - # Back to the hill and over it again! # </textarea> # </p> # <input type='submit' value='Create' /> # </form> # # It's possible to specialize the form builder by using a different action name and by supplying another - # block renderer. Example (entry is a new record that has a message attribute using VARCHAR): + # block renderer. For example, let's say you have a model <tt>Entry</tt> with an attribute <tt>message</tt> of type <tt>VARCHAR</tt>: # # form("entry", :action => "sign", :input_block => # Proc.new { |record, column| "#{column.human_name}: #{input(record, column.name)}<br />" }) => @@ -74,16 +74,16 @@ module ActionView content_tag('form', contents, :action => action, :method => 'post', :enctype => options[:multipart] ? 'multipart/form-data': nil) end - # Returns a string containing the error message attached to the +method+ on the +object+, if one exists. - # This error message is wrapped in a DIV tag, which can be specialized to include both a +prepend_text+ and +append_text+ - # to properly introduce the error and a +css_class+ to style it accordingly. Examples (post has an error message - # "can't be empty" on the title attribute): + # Returns a string containing the error message attached to the +method+ on the +object+ if one exists. + # This error message is wrapped in a <tt>DIV</tt> tag, which can be extended to include a +prepend_text+ and/or +append_text+ + # (to properly explain the error), and a +css_class+ to style it accordingly. As an example, let's say you have a model + # +post+ that has an error message on the +title+ attribute: # # <%= error_message_on "post", "title" %> => # <div class="formError">can't be empty</div> # - # <%= error_message_on "post", "title", "Title simply ", " (or it won't work)", "inputError" %> => - # <div class="inputError">Title simply can't be empty (or it won't work)</div> + # <%= error_message_on "post", "title", "Title simply ", " (or it won't work).", "inputError" %> => + # <div class="inputError">Title simply can't be empty (or it won't work).</div> def error_message_on(object, method, prepend_text = "", append_text = "", css_class = "formError") if (obj = instance_variable_get("@#{object}")) && (errors = obj.errors.on(method)) content_tag("div", "#{prepend_text}#{errors.is_a?(Array) ? errors.first : errors}#{append_text}", :class => css_class) @@ -92,11 +92,11 @@ module ActionView end end - # Returns a string with a div containing all of the error messages for the objects located as instance variables by the names + # Returns a string with a <tt>DIV</tt> containing all of the error messages for the objects located as instance variables by the names # given. If more than one object is specified, the errors for the objects are displayed in the order that the object names are # provided. # - # This div can be tailored by the following options: + # This <tt>DIV</tt> can be tailored by the following options: # # * <tt>header_tag</tt> - Used for the header of the error div (default: h2) # * <tt>id</tt> - The id of the error div (default: errorExplanation) @@ -105,12 +105,12 @@ module ActionView # any text that you prefer. If <tt>object_name</tt> is not set, the name of # the first object will be used. # - # Specifying one object: + # To specify the display for one object, you simply provide its name as a parameter. For example, for the +User+ model: # # error_messages_for 'user' # - # Specifying more than one object (and using the name 'user' in the - # header as the <tt>object_name</tt> instead of 'user_common'): + # To specify more than one object, you simply list them; optionally, you can add an extra +object_name+ parameter, which + # be the name in the header. # # error_messages_for 'user_common', 'user', :object_name => 'user' # diff --git a/actionpack/lib/action_view/helpers/debug_helper.rb b/actionpack/lib/action_view/helpers/debug_helper.rb index 9e92813a18..ef089c1bad 100644 --- a/actionpack/lib/action_view/helpers/debug_helper.rb +++ b/actionpack/lib/action_view/helpers/debug_helper.rb @@ -3,6 +3,16 @@ module ActionView # Provides a set of methods for making it easier to locate problems. module DebugHelper # Returns a <pre>-tag set with the +object+ dumped by YAML. Very readable way to inspect an object. + # my_hash = {'first' => 1, 'second' => 'two', 'third' => [1,2,3]} + # debug(my_hash) + # => <pre class='debug_dump'>--- + # first: 1 + # second: two + # third: + # - 1 + # - 2 + # - 3 + # </pre> def debug(object) begin Marshal::dump(object) |