diff options
Diffstat (limited to 'actionpack/lib/action_view/helpers/form_options_helper.rb')
| -rw-r--r-- | actionpack/lib/action_view/helpers/form_options_helper.rb | 173 |
1 files changed, 156 insertions, 17 deletions
diff --git a/actionpack/lib/action_view/helpers/form_options_helper.rb b/actionpack/lib/action_view/helpers/form_options_helper.rb index c4cdfef4a2..bc03a1cf83 100644 --- a/actionpack/lib/action_view/helpers/form_options_helper.rb +++ b/actionpack/lib/action_view/helpers/form_options_helper.rb @@ -164,7 +164,9 @@ module ActionView # # The <tt>:value_method</tt> and <tt>:text_method</tt> parameters are methods to be called on each member # of +collection+. The return values are used as the +value+ attribute and contents of each - # <tt><option></tt> tag, respectively. + # <tt><option></tt> tag, respectively. They can also be any object that responds to +call+, such + # as a +proc+, that will be called for each member of the +collection+ to + # retrieve the value/text. # # Example object structure for use with this method: # class Post < ActiveRecord::Base @@ -360,12 +362,13 @@ module ActionView # should produce the desired results. def options_from_collection_for_select(collection, value_method, text_method, selected = nil) options = collection.map do |element| - [element.send(text_method), element.send(value_method)] + [value_for_collection(element, text_method), value_for_collection(element, value_method)] end selected, disabled = extract_selected_and_disabled(selected) - select_deselect = {} - select_deselect[:selected] = extract_values_from_collection(collection, value_method, selected) - select_deselect[:disabled] = extract_values_from_collection(collection, value_method, disabled) + select_deselect = { + :selected => extract_values_from_collection(collection, value_method, selected), + :disabled => extract_values_from_collection(collection, value_method, disabled) + } options_for_select(options, select_deselect) end @@ -418,10 +421,10 @@ module ActionView # wrap the output in an appropriate <tt><select></tt> tag. def option_groups_from_collection_for_select(collection, group_method, group_label_method, option_key_method, option_value_method, selected_key = nil) collection.map do |group| - group_label_string = group.send(group_label_method) - "<optgroup label=\"#{ERB::Util.html_escape(group_label_string)}\">" + - options_from_collection_for_select(group.send(group_method), option_key_method, option_value_method, selected_key) + - '</optgroup>' + option_tags = options_from_collection_for_select( + group.send(group_method), option_key_method, option_value_method, selected_key) + + content_tag(:optgroup, option_tags, :label => group.send(group_label_method)) end.join.html_safe end @@ -519,14 +522,138 @@ module ActionView zone_options.html_safe end + # Returns radio button tags for the collection of existing return values + # of +method+ for +object+'s class. The value returned from calling + # +method+ on the instance +object+ will be selected. If calling +method+ + # returns +nil+, no selection is made. + # + # The <tt>:value_method</tt> and <tt>:text_method</tt> parameters are + # methods to be called on each member of +collection+. The return values + # are used as the +value+ attribute and contents of each radio button tag, + # respectively. They can also be any object that responds to +call+, such + # as a +proc+, that will be called for each member of the +collection+ to + # retrieve the value/text. + # + # Example object structure for use with this method: + # class Post < ActiveRecord::Base + # belongs_to :author + # end + # class Author < ActiveRecord::Base + # has_many :posts + # def name_with_initial + # "#{first_name.first}. #{last_name}" + # end + # end + # + # Sample usage (selecting the associated Author for an instance of Post, <tt>@post</tt>): + # collection_radio_buttons(:post, :author_id, Author.all, :id, :name_with_initial) + # + # If <tt>@post.author_id</tt> is already <tt>1</tt>, this would return: + # <input id="post_author_id_1" name="post[author_id]" type="radio" value="1" checked="checked" /> + # <label for="post_author_id_1">D. Heinemeier Hansson</label> + # <input id="post_author_id_2" name="post[author_id]" type="radio" value="2" /> + # <label for="post_author_id_2">D. Thomas</label> + # <input id="post_author_id_3" name="post[author_id]" type="radio" value="3" /> + # <label for="post_author_id_3">M. Clark</label> + # + # It is also possible to customize the way the elements will be shown by + # giving a block to the method: + # collection_radio_buttons(:post, :author_id, Author.all, :id, :name_with_initial) do |b| + # b.label { b.radio_button } + # end + # + # The argument passed to the block is a special kind of builder for this + # collection, which has the ability to generate the label and radio button + # for the current item in the collection, with proper text and value. + # Using it, you can change the label and radio button display order or + # even use the label as wrapper, as in the example above. + # + # The builder methods <tt>label</tt> and <tt>radio_button</tt> also accept + # extra html options: + # collection_radio_buttons(:post, :author_id, Author.all, :id, :name_with_initial) do |b| + # b.label(:class => "radio_button") { b.radio_button(:class => "radio_button") } + # end + # + # There are also two special methods available: <tt>text</tt> and + # <tt>value</tt>, which are the current text and value methods for the + # item being rendered, respectively. You can use them like this: + # collection_radio_buttons(:post, :author_id, Author.all, :id, :name_with_initial) do |b| + # b.label(:"data-value" => b.value) { b.radio_button + b.text } + # end + def collection_radio_buttons(object, method, collection, value_method, text_method, options = {}, html_options = {}, &block) + Tags::CollectionRadioButtons.new(object, method, self, collection, value_method, text_method, options, html_options).render(&block) + end + + # Returns check box tags for the collection of existing return values of + # +method+ for +object+'s class. The value returned from calling +method+ + # on the instance +object+ will be selected. If calling +method+ returns + # +nil+, no selection is made. + # + # The <tt>:value_method</tt> and <tt>:text_method</tt> parameters are + # methods to be called on each member of +collection+. The return values + # are used as the +value+ attribute and contents of each check box tag, + # respectively. They can also be any object that responds to +call+, such + # as a +proc+, that will be called for each member of the +collection+ to + # retrieve the value/text. + # + # Example object structure for use with this method: + # class Post < ActiveRecord::Base + # has_and_belongs_to_many :author + # end + # class Author < ActiveRecord::Base + # has_and_belongs_to_many :posts + # def name_with_initial + # "#{first_name.first}. #{last_name}" + # end + # end + # + # Sample usage (selecting the associated Author for an instance of Post, <tt>@post</tt>): + # collection_check_boxes(:post, :author_ids, Author.all, :id, :name_with_initial) + # + # If <tt>@post.author_ids</tt> is already <tt>[1]</tt>, this would return: + # <input id="post_author_ids_1" name="post[author_ids][]" type="checkbox" value="1" checked="checked" /> + # <label for="post_author_ids_1">D. Heinemeier Hansson</label> + # <input id="post_author_ids_2" name="post[author_ids][]" type="checkbox" value="2" /> + # <label for="post_author_ids_2">D. Thomas</label> + # <input id="post_author_ids_3" name="post[author_ids][]" type="checkbox" value="3" /> + # <label for="post_author_ids_3">M. Clark</label> + # <input name="post[author_ids][]" type="hidden" value="" /> + # + # It is also possible to customize the way the elements will be shown by + # giving a block to the method: + # collection_check_boxes(:post, :author_ids, Author.all, :id, :name_with_initial) do |b| + # b.label { b.check_box } + # end + # + # The argument passed to the block is a special kind of builder for this + # collection, which has the ability to generate the label and check box + # for the current item in the collection, with proper text and value. + # Using it, you can change the label and check box display order or even + # use the label as wrapper, as in the example above. + # + # The builder methods <tt>label</tt> and <tt>check_box</tt> also accept + # extra html options: + # collection_check_boxes(:post, :author_ids, Author.all, :id, :name_with_initial) do |b| + # b.label(:class => "check_box") { b.check_box(:class => "check_box") } + # end + # + # There are also two special methods available: <tt>text</tt> and + # <tt>value</tt>, which are the current text and value methods for the + # item being rendered, respectively. You can use them like this: + # collection_check_boxes(:post, :author_ids, Author.all, :id, :name_with_initial) do |b| + # b.label(:"data-value" => b.value) { b.check_box + b.text } + # end + def collection_check_boxes(object, method, collection, value_method, text_method, options = {}, html_options = {}, &block) + Tags::CollectionCheckBoxes.new(object, method, self, collection, value_method, text_method, options, html_options).render(&block) + end + private def option_html_attributes(element) return "" unless Array === element - html_attributes = [] - element.select { |e| Hash === e }.reduce({}, :merge).each do |k, v| - html_attributes << " #{k}=\"#{ERB::Util.html_escape(v.to_s)}\"" - end - html_attributes.join + + element.select { |e| Hash === e }.reduce({}, :merge).map do |k, v| + " #{k}=\"#{ERB::Util.html_escape(v.to_s)}\"" + end.join end def option_text_and_value(option) @@ -552,12 +679,12 @@ module ActionView def extract_selected_and_disabled(selected) if selected.is_a?(Proc) - [ selected, nil ] + [selected, nil] else selected = Array.wrap(selected) options = selected.extract_options!.symbolize_keys - selected_items = options.include?(:selected) ? options[:selected] : selected - [ selected_items, options[:disabled] ] + selected_items = options.fetch(:selected, selected) + [selected_items, options[:disabled]] end end @@ -570,6 +697,10 @@ module ActionView selected end end + + def value_for_collection(item, value) + value.respond_to?(:call) ? value.call(item) : item.send(value) + end end class FormBuilder @@ -588,6 +719,14 @@ module ActionView def time_zone_select(method, priority_zones = nil, options = {}, html_options = {}) @template.time_zone_select(@object_name, method, priority_zones, objectify_options(options), @default_options.merge(html_options)) end + + def collection_check_boxes(method, collection, value_method, text_method, options = {}, html_options = {}) + @template.collection_check_boxes(@object_name, method, collection, value_method, text_method, objectify_options(options), @default_options.merge(html_options)) + end + + def collection_radio_buttons(method, collection, value_method, text_method, options = {}, html_options = {}) + @template.collection_radio_buttons(@object_name, method, collection, value_method, text_method, objectify_options(options), @default_options.merge(html_options)) + end end end end |