diff options
Diffstat (limited to 'actionpack/lib/action_view')
| -rw-r--r-- | actionpack/lib/action_view/helpers/form_collections_helper.rb | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/actionpack/lib/action_view/helpers/form_collections_helper.rb b/actionpack/lib/action_view/helpers/form_collections_helper.rb index 9280902e7c..da89a23552 100644 --- a/actionpack/lib/action_view/helpers/form_collections_helper.rb +++ b/actionpack/lib/action_view/helpers/form_collections_helper.rb @@ -1,10 +1,81 @@ module ActionView module Helpers module FormCollectionsHelper + # 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. + # + # 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: + # <span> + # <input id="post_author_id_1" name="post[author_id]" type="radio" value="1" checked="checked" /> + # <label class="collection_radio_buttons" for="post_author_id_1">D. Heinemeier Hansson</label> + # </span> + # <span> + # <input id="post_author_id_2" name="post[author_id]" type="radio" value="2" /> + # <label class="collection_radio_buttons" for="post_author_id_2">D. Thomas</label> + # </span> + # <span> + # <input id="post_author_id_3" name="post[author_id]" type="radio" value="3" /> + # <label class="collection_radio_buttons" for="post_author_id_3">M. Clark</label> + # </span> 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. + # + # Example object structure for use with this method: + # class Post < ActiveRecord::Base + # has_and_belongs_to :author + # end + # class Author < ActiveRecord::Base + # has_and_belongs_to :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: + # <span> + # <input id="post_author_ids_1" name="post[author_ids][]" type="checkbox" value="1" checked="checked" /> + # <label class="collection_check_boxes" for="post_author_ids_1">D. Heinemeier Hansson</label> + # </span> + # <span> + # <input id="post_author_ids_1" name="post[author_ids][]" type="checkbox" value="2" /> + # <label class="collection_check_boxes" for="post_author_ids_1">D. Thomas</label> + # </span> + # <span> + # <input id="post_author_ids_3" name="post[author_ids][]" type="checkbox" value="3" /> + # <label class="collection_check_boxes" for="post_author_ids_3">M. Clark</label> + # </span> + # <input name="post[author_ids][]" type="hidden" value="" /> 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 |