diff options
Diffstat (limited to 'actionpack/lib/action_view/renderer/partial_renderer.rb')
| -rw-r--r-- | actionpack/lib/action_view/renderer/partial_renderer.rb | 120 |
1 files changed, 89 insertions, 31 deletions
diff --git a/actionpack/lib/action_view/renderer/partial_renderer.rb b/actionpack/lib/action_view/renderer/partial_renderer.rb index 54a0ba96ff..c5d5540510 100644 --- a/actionpack/lib/action_view/renderer/partial_renderer.rb +++ b/actionpack/lib/action_view/renderer/partial_renderer.rb @@ -32,7 +32,7 @@ module ActionView # # <%= render :partial => "account", :object => @buyer %> # - # would provide the +@buyer+ object to the partial, available under the local variable +account+ and is + # would provide the <tt>@buyer</tt> object to the partial, available under the local variable +account+ and is # equivalent to: # # <%= render :partial => "account", :locals => { :account => @buyer } %> @@ -82,16 +82,17 @@ module ActionView # # This will render the partial "advertisement/_ad.html.erb" regardless of which controller this is being called from. # - # == Rendering objects with the RecordIdentifier + # == Rendering objects that respond to `to_partial_path` # - # Instead of explicitly naming the location of a partial, you can also let the RecordIdentifier do the work if - # you're following its conventions for RecordIdentifier#partial_path. Examples: + # Instead of explicitly naming the location of a partial, you can also let PartialRenderer do the work + # and pick the proper path by checking `to_partial_path` method. # - # # @account is an Account instance, so it uses the RecordIdentifier to replace + # # @account.to_partial_path returns 'accounts/account', so it can be used to replace: # # <%= render :partial => "accounts/account", :locals => { :account => @account} %> # <%= render :partial => @account %> # - # # @posts is an array of Post instances, so it uses the RecordIdentifier to replace + # # @posts is an array of Post instances, so every post record returns 'posts/post' on `to_partial_path`, + # # that's why we can replace: # # <%= render :partial => "posts/post", :collection => @posts %> # <%= render :partial => @posts %> # @@ -106,13 +107,14 @@ module ActionView # # Instead of <%= render :partial => "account", :locals => { :account => @buyer } %> # <%= render "account", :account => @buyer %> # - # # @account is an Account instance, so it uses the RecordIdentifier to replace - # # <%= render :partial => "accounts/account", :locals => { :account => @account } %> - # <%= render(@account) %> + # # @account.to_partial_path returns 'accounts/account', so it can be used to replace: + # # <%= render :partial => "accounts/account", :locals => { :account => @account} %> + # <%= render @account %> # - # # @posts is an array of Post instances, so it uses the RecordIdentifier to replace + # # @posts is an array of Post instances, so every post record returns 'posts/post' on `to_partial_path`, + # # that's why we can replace: # # <%= render :partial => "posts/post", :collection => @posts %> - # <%= render(@posts) %> + # <%= render @posts %> # # == Rendering partials with layouts # @@ -156,6 +158,47 @@ module ActionView # Name: <%= user.name %> # </div> # + # If a collection is given, the layout will be rendered once for each item in + # the collection. Just think these two snippets have the same output: + # + # <%# app/views/users/_user.html.erb %> + # Name: <%= user.name %> + # + # <%# app/views/users/index.html.erb %> + # <%# This does not use layouts %> + # <ul> + # <% users.each do |user| -%> + # <li> + # <%= render :partial => "user", :locals => { :user => user } %> + # </li> + # <% end -%> + # </ul> + # + # <%# app/views/users/_li_layout.html.erb %> + # <li> + # <%= yield %> + # </li> + # + # <%# app/views/users/index.html.erb %> + # <ul> + # <%= render :partial => "user", :layout => "li_layout", :collection => users %> + # </ul> + # + # Given two users whose names are Alice and Bob, these snippets return: + # + # <ul> + # <li> + # Name: Alice + # </li> + # <li> + # Name: Bob + # </li> + # </ul> + # + # The current object being rendered, as well as the object_counter, will be + # available as local variables inside the layout template under the same names + # as available in the partial. + # # You can also apply a layout to a block within any template: # # <%# app/views/users/_chief.html.erb &> @@ -205,19 +248,26 @@ module ActionView # Deadline: <%= user.deadline %> # <%- end -%> # <% end %> - class PartialRenderer < AbstractRenderer #:nodoc: - PARTIAL_NAMES = Hash.new { |h,k| h[k] = {} } + class PartialRenderer < AbstractRenderer + PREFIXED_PARTIAL_NAMES = Hash.new { |h,k| h[k] = {} } def initialize(*) super @context_prefix = @lookup_context.prefixes.first - @partial_names = PARTIAL_NAMES[@context_prefix] end def render(context, options, block) setup(context, options, block) identifier = (@template = find_partial) ? @template.identifier : @path + @lookup_context.rendered_format ||= begin + if @template && @template.formats.present? + @template.formats.first + else + formats.first + end + end + if @collection instrument(:collection, :identifier => identifier || "collection", :count => @collection.size) do render_collection @@ -245,7 +295,7 @@ module ActionView object, as = @object, @variable if !block && (layout = @options[:layout]) - layout = find_template(layout) + layout = find_template(layout, @locals.keys + [@variable]) end object ||= locals[as] @@ -297,7 +347,6 @@ module ActionView "and is followed by any combinations of letters, numbers, or underscores.") end - extract_format(@path, @details) self end @@ -332,12 +381,19 @@ module ActionView segments, locals, template = [], @locals, @template as, counter = @variable, @variable_counter + if layout = @options[:layout] + layout = find_template(layout, @locals.keys + [@variable, @variable_counter]) + end + locals[counter] = -1 @collection.each do |object| locals[counter] += 1 locals[as] = object - segments << template.render(@view, locals) + + content = template.render(@view, locals) + content = layout.render(@view, locals) { content } if layout + segments << content end segments @@ -366,37 +422,39 @@ module ActionView path = if object.respond_to?(:to_partial_path) object.to_partial_path else - klass = object.class - if klass.respond_to?(:model_name) - ActiveSupport::Deprecation.warn "ActiveModel-compatible objects whose classes return a #model_name that responds to #partial_path are deprecated. Please respond to #to_partial_path directly instead." - klass.model_name.partial_path - else - raise ArgumentError.new("'#{object.inspect}' is not an ActiveModel-compatible object that returns a valid partial path.") - end + raise ArgumentError.new("'#{object.inspect}' is not an ActiveModel-compatible object. It must implement :to_partial_path.") end - @partial_names[path] ||= path.dup.tap do |object_path| - merge_prefix_into_object_path(@context_prefix, object_path) + if @view.prefix_partial_path_with_controller_namespace + prefixed_partial_names[path] ||= merge_prefix_into_object_path(@context_prefix, path.dup) + else + path end end + def prefixed_partial_names + @prefixed_partial_names ||= PREFIXED_PARTIAL_NAMES[@context_prefix] + end + def merge_prefix_into_object_path(prefix, object_path) if prefix.include?(?/) && object_path.include?(?/) - overlap = [] + prefixes = [] prefix_array = File.dirname(prefix).split('/') object_path_array = object_path.split('/')[0..-3] # skip model dir & partial prefix_array.each_with_index do |dir, index| - overlap << dir if dir == object_path_array[index] + break if dir == object_path_array[index] + prefixes << dir end - object_path.gsub!(/^#{overlap.join('/')}\//,'') - object_path.insert(0, "#{File.dirname(prefix)}/") + (prefixes << object_path).join("/") + else + object_path end end def retrieve_variable(path) - variable = @options[:as].try(:to_sym) || path[%r'_?(\w+)(\.\w+)*$', 1].to_sym + variable = @options.fetch(:as) { path[%r'_?(\w+)(\.\w+)*$', 1] }.try(:to_sym) variable_counter = :"#{variable}_counter" if @collection [variable, variable_counter] end |