diff options
Diffstat (limited to 'actionpack/lib/action_view/partials.rb')
| -rw-r--r-- | actionpack/lib/action_view/partials.rb | 97 |
1 files changed, 54 insertions, 43 deletions
diff --git a/actionpack/lib/action_view/partials.rb b/actionpack/lib/action_view/partials.rb index 074ba5a2b5..a91417293a 100644 --- a/actionpack/lib/action_view/partials.rb +++ b/actionpack/lib/action_view/partials.rb @@ -1,14 +1,15 @@ module ActionView - # There's also a convenience method for rendering sub templates within the current controller that depends on a single object - # (we call this kind of sub templates for partials). It relies on the fact that partials should follow the naming convention of being - # prefixed with an underscore -- as to separate them from regular templates that could be rendered on their own. + # There's also a convenience method for rendering sub templates within the current controller that depends on a + # single object (we call this kind of sub templates for partials). It relies on the fact that partials should + # follow the naming convention of being prefixed with an underscore -- as to separate them from regular + # templates that could be rendered on their own. # # In a template for Advertiser#account: # # <%= render :partial => "account" %> # - # This would render "advertiser/_account.erb" and pass the instance variable @account in as a local variable +account+ to - # the template for display. + # This would render "advertiser/_account.erb" and pass the instance variable @account in as a local variable + # +account+ to the template for display. # # In another template for Advertiser#buy, we could have: # @@ -18,24 +19,24 @@ module ActionView # <%= render :partial => "ad", :locals => { :ad => ad } %> # <% end %> # - # This would first render "advertiser/_account.erb" with @buyer passed in as the local variable +account+, then render - # "advertiser/_ad.erb" and pass the local variable +ad+ to the template for display. + # This would first render "advertiser/_account.erb" with @buyer passed in as the local variable +account+, then + # render "advertiser/_ad.erb" and pass the local variable +ad+ to the template for display. # # == Rendering a collection of partials # - # The example of partial use describes a familiar pattern where a template needs to iterate over an array and render a sub - # template for each of the elements. This pattern has been implemented as a single method that accepts an array and renders - # a partial by the same name as the elements contained within. So the three-lined example in "Using partials" can be rewritten - # with a single line: + # The example of partial use describes a familiar pattern where a template needs to iterate over an array and + # render a sub template for each of the elements. This pattern has been implemented as a single method that + # accepts an array and renders a partial by the same name as the elements contained within. So the three-lined + # example in "Using partials" can be rewritten with a single line: # # <%= render :partial => "ad", :collection => @advertisements %> # - # This will render "advertiser/_ad.erb" and pass the local variable +ad+ to the template for display. An iteration counter - # will automatically be made available to the template with a name of the form +partial_name_counter+. In the case of the - # example above, the template would be fed +ad_counter+. + # This will render "advertiser/_ad.erb" and pass the local variable +ad+ to the template for display. An + # iteration counter will automatically be made available to the template with a name of the form + # +partial_name_counter+. In the case of the example above, the template would be fed +ad_counter+. # - # NOTE: Due to backwards compatibility concerns, the collection can't be one of hashes. Normally you'd also just keep domain objects, - # like Active Records, in there. + # NOTE: Due to backwards compatibility concerns, the collection can't be one of hashes. Normally you'd also + # just keep domain objects, like Active Records, in there. # # == Rendering shared partials # @@ -47,8 +48,9 @@ module ActionView # # == Rendering partials with layouts # - # Partials can have their own layouts applied to them. These layouts are different than the ones that are specified globally - # for the entire action, but they work in a similar fashion. Imagine a list with two types of users: + # Partials can have their own layouts applied to them. These layouts are different than the ones that are + # specified globally for the entire action, but they work in a similar fashion. Imagine a list with two types + # of users: # # <%# app/views/users/index.html.erb &> # Here's the administrator: @@ -139,38 +141,45 @@ module ActionView extend ActiveSupport::Memoizable private - def render_partial(partial_path, object_assigns = nil, local_assigns = {}) #:nodoc: - local_assigns ||= {} + def render_partial(options = {}) #:nodoc: + local_assigns = options[:locals] || {} - case partial_path + case partial_path = options[:partial] when String, Symbol, NilClass - pick_template(find_partial_path(partial_path)).render_partial(self, object_assigns, local_assigns) + if options.has_key?(:collection) + render_partial_collection(options) + else + _pick_partial_template(partial_path).render_partial(self, options[:object], local_assigns) + end when ActionView::Helpers::FormBuilder builder_partial_path = partial_path.class.to_s.demodulize.underscore.sub(/_builder$/, '') - render_partial(builder_partial_path, object_assigns, (local_assigns || {}).merge(builder_partial_path.to_sym => partial_path)) + local_assigns.merge!(builder_partial_path.to_sym => partial_path) + render_partial(:partial => builder_partial_path, :object => options[:object], :locals => local_assigns) when Array, ActiveRecord::Associations::AssociationCollection, ActiveRecord::NamedScope::Scope - if partial_path.any? - collection = partial_path - render_partial_collection(nil, collection, nil, local_assigns) - else - "" - end + partial_path.any? ? render_partial(:collection => partial_path, :locals => local_assigns) : "" else - render_partial(ActionController::RecordIdentifier.partial_path(partial_path, controller.class.controller_path), partial_path, local_assigns) + object = partial_path + render_partial( + :partial => ActionController::RecordIdentifier.partial_path(object, controller.class.controller_path), + :object => object, + :locals => local_assigns + ) end end - def render_partial_collection(partial_path, collection, partial_spacer_template = nil, local_assigns = {}, as = nil) #:nodoc: - return nil if collection.blank? + def render_partial_collection(options = {}) #:nodoc: + return nil if options[:collection].blank? - local_assigns = local_assigns ? local_assigns.clone : {} - spacer = partial_spacer_template ? render(:partial => partial_spacer_template) : '' + partial = options[:partial] + spacer = options[:spacer_template] ? render(:partial => options[:spacer_template]) : '' + local_assigns = options[:locals] ? options[:locals].clone : {} + as = options[:as] index = 0 - collection.map do |object| - _partial_path ||= partial_path || ActionController::RecordIdentifier.partial_path(object, controller.class.controller_path) - path = find_partial_path(_partial_path) - template = pick_template(path) + options[:collection].map do |object| + _partial_path ||= partial || + ActionController::RecordIdentifier.partial_path(object, controller.class.controller_path) + template = _pick_partial_template(_partial_path) local_assigns[template.counter_name] = index result = template.render_partial(self, object, local_assigns, as) index += 1 @@ -178,15 +187,17 @@ module ActionView end.join(spacer) end - def find_partial_path(partial_path) + def _pick_partial_template(partial_path) #:nodoc: if partial_path.include?('/') - File.join(File.dirname(partial_path), "_#{File.basename(partial_path)}") + path = File.join(File.dirname(partial_path), "_#{File.basename(partial_path)}") elsif respond_to?(:controller) - "#{controller.class.controller_path}/_#{partial_path}" + path = "#{controller.class.controller_path}/_#{partial_path}" else - "_#{partial_path}" + path = "_#{partial_path}" end + + pick_template(path) end - memoize :find_partial_path + memoize :_pick_partial_template end end |