diff options
Diffstat (limited to 'actionview/lib/action_view/helpers/form_options_helper.rb')
| -rw-r--r-- | actionview/lib/action_view/helpers/form_options_helper.rb | 34 |
1 files changed, 24 insertions, 10 deletions
diff --git a/actionview/lib/action_view/helpers/form_options_helper.rb b/actionview/lib/action_view/helpers/form_options_helper.rb index e7f932ca06..f625a9ff49 100644 --- a/actionview/lib/action_view/helpers/form_options_helper.rb +++ b/actionview/lib/action_view/helpers/form_options_helper.rb @@ -97,14 +97,17 @@ module ActionView # Create a select tag and a series of contained option tags for the provided object and method. # The option currently held by the object will be selected, provided that the object is available. # - # There are two possible formats for the choices parameter, corresponding to other helpers' output: - # * A flat collection: see options_for_select - # * A nested collection: see grouped_options_for_select + # There are two possible formats for the +choices+ parameter, corresponding to other helpers' output: + # + # * A flat collection (see +options_for_select+). + # + # * A nested collection (see +grouped_options_for_select+). + # + # For example: # - # Example with @post.person_id => 1: # select("post", "person_id", Person.all.collect {|p| [ p.name, p.id ] }, { include_blank: true }) # - # could become: + # would become: # # <select name="post[person_id]"> # <option value=""></option> @@ -113,6 +116,8 @@ module ActionView # <option value="3">Tobias</option> # </select> # + # assuming the associated person has ID 1. + # # This can be used to provide a default set of options in the standard way: before rendering the create form, a # new model instance is assigned the default options and bound to @model_name. Usually this model is not saved # to the database. Instead, a second model object is created when the create request is received. @@ -123,6 +128,15 @@ module ActionView # or <tt>selected: nil</tt> to leave all options unselected. Similarly, you can specify values to be disabled in the option # tags by specifying the <tt>:disabled</tt> option. This can either be a single value or an array of values to be disabled. # + # A block can be passed to +select+ to customize how the options tags will be rendered. This + # is useful when the options tag has complex attributes. + # + # select(report, "campaign_ids") do + # available_campaigns.each do |c| + # content_tag(:option, c.name, value: c.id, data: { tags: c.tags.to_json }) + # end + # end + # # ==== Gotcha # # The HTML specification says when +multiple+ parameter passed to select and all options got deselected @@ -147,8 +161,8 @@ module ActionView # In case if you don't want the helper to generate this hidden field you can specify # <tt>include_hidden: false</tt> option. # - def select(object, method, choices, options = {}, html_options = {}) - Tags::Select.new(object, method, self, choices, options, html_options).render + def select(object, method, choices = nil, options = {}, html_options = {}, &block) + Tags::Select.new(object, method, self, choices, options, html_options, &block).render end # Returns <tt><select></tt> and <tt><option></tt> tags for the collection of existing return values of @@ -246,7 +260,7 @@ module ActionView Tags::GroupedCollectionSelect.new(object, method, self, collection, group_method, group_label_method, option_key_method, option_value_method, options, html_options).render end - # Return select and option tags for the given object and method, using + # Returns select and option tags for the given object and method, using # #time_zone_options_for_select to generate the list of option tags. # # In addition to the <tt>:include_blank</tt> option documented above, @@ -761,8 +775,8 @@ module ActionView # <% end %> # # Please refer to the documentation of the base helper for details. - def select(method, choices, options = {}, html_options = {}) - @template.select(@object_name, method, choices, objectify_options(options), @default_options.merge(html_options)) + def select(method, choices = nil, options = {}, html_options = {}, &block) + @template.select(@object_name, method, choices, objectify_options(options), @default_options.merge(html_options), &block) end # Wraps ActionView::Helpers::FormOptionsHelper#collection_select for form builders: |