diff options
Diffstat (limited to 'railties/guides/source/action_view_overview.textile')
| -rw-r--r-- | railties/guides/source/action_view_overview.textile | 77 |
1 files changed, 75 insertions, 2 deletions
diff --git a/railties/guides/source/action_view_overview.textile b/railties/guides/source/action_view_overview.textile index 87250c684b..ac5c9fa4d8 100644 --- a/railties/guides/source/action_view_overview.textile +++ b/railties/guides/source/action_view_overview.textile @@ -16,7 +16,7 @@ Action View and Action Controller are the two major components of Action Pack. I Action View templates are written using embedded Ruby in tags mingled with HTML. To avoid cluttering the templates with boilerplate code, a number of helper classes provide common behavior for forms, dates, and strings. It's also easy to add new helpers to your application as it evolves. -Note: Some features of Action View are tied to Active Record, but that doesn't mean that Action View depends on Active Record. Action View is an independent package that can be used with any sort of backend. +NOTE. Some features of Action View are tied to Active Record, but that doesn't mean that Action View depends on Active Record. Action View is an independent package that can be used with any sort of backend. h3. Using Action View with Rails @@ -898,7 +898,7 @@ h5. select_year Returns a select tag with options for each of the five years on each side of the current, which is selected. The five year radius can be changed using the +:start_year+ and +:end_year+ keys in the +options+. <ruby> -# Generates a select field for five years on either side of +Date.today+ that defaults to the current year +# Generates a select field for five years on either side of Date.today that defaults to the current year select_year(Date.today) # Generates a select field from 1900 to 2009 that defaults to the current year @@ -1124,6 +1124,79 @@ If <tt>@post.author_id</tt> is 1, this would return: </select> </html> +h5. collection_radio_buttons + +Returns +radio_button+ tags for the collection of existing return values of +method+ for +object+'s class. + +Example object structure for use with this method: + +<ruby> +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 +</ruby> + +Sample usage (selecting the associated Author for an instance of Post, +@post+): + +<ruby> +collection_radio_buttons(:post, :author_id, Author.all, :id, :name_with_initial) +</ruby> + +If <tt>@post.author_id</tt> is 1, this would return: + +<html> +<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> +</html> + +h5. collection_check_boxes + +Returns +check_box+ tags for the collection of existing return values of +method+ for +object+'s class. + +Example object structure for use with this method: + +<ruby> +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 +</ruby> + +Sample usage (selecting the associated Authors for an instance of Post, +@post+): + +<ruby> +collection_check_boxes(:post, :author_ids, Author.all, :id, :name_with_initial) +</ruby> + +If <tt>@post.author_ids</tt> is [1], this would return: + +<html> +<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="" /> +</html> + h5. country_options_for_select Returns a string of option tags for pretty much any country in the world. |