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| author | Rajinder Yadav <devguy.ca@gmail.com> | 2010-10-15 22:19:39 -0400 |
|---|---|---|
| committer | Rajinder Yadav <devguy.ca@gmail.com> | 2010-10-15 22:19:39 -0400 |
| commit | 62eb00a62e3868c3500372def52968b919332b51 (patch) | |
| tree | 8497f517402c19eae1fea22943565cbf11496ef7 /actionpack/lib/action_view/render | |
| parent | 018bf0f5756ef3887815ea46d6671dc1d3b526cf (diff) | |
| parent | cffae06a4f1b7aac86a7e99cfb244890f837f976 (diff) | |
| download | rails-62eb00a62e3868c3500372def52968b919332b51.tar.gz rails-62eb00a62e3868c3500372def52968b919332b51.tar.bz2 rails-62eb00a62e3868c3500372def52968b919332b51.zip | |
Merge branch 'master' of git://github.com/lifo/docrails
Diffstat (limited to 'actionpack/lib/action_view/render')
| -rw-r--r-- | actionpack/lib/action_view/render/layouts.rb | 83 | ||||
| -rw-r--r-- | actionpack/lib/action_view/render/partials.rb | 161 | ||||
| -rw-r--r-- | actionpack/lib/action_view/render/rendering.rb | 95 |
3 files changed, 71 insertions, 268 deletions
diff --git a/actionpack/lib/action_view/render/layouts.rb b/actionpack/lib/action_view/render/layouts.rb deleted file mode 100644 index 8882acca31..0000000000 --- a/actionpack/lib/action_view/render/layouts.rb +++ /dev/null @@ -1,83 +0,0 @@ -module ActionView - # = Action View Layouts - module Layouts - # Returns the contents that are yielded to a layout, given a name or a block. - # - # You can think of a layout as a method that is called with a block. If the user calls - # <tt>yield :some_name</tt>, the block, by default, returns <tt>content_for(:some_name)</tt>. - # If the user calls simply +yield+, the default block returns <tt>content_for(:layout)</tt>. - # - # The user can override this default by passing a block to the layout: - # - # # The template - # <%= render :layout => "my_layout" do %> - # Content - # <% end %> - # - # # The layout - # <html> - # <%= yield %> - # </html> - # - # In this case, instead of the default block, which would return <tt>content_for(:layout)</tt>, - # this method returns the block that was passed in to <tt>render :layout</tt>, and the response - # would be - # - # <html> - # Content - # </html> - # - # Finally, the block can take block arguments, which can be passed in by +yield+: - # - # # The template - # <%= render :layout => "my_layout" do |customer| %> - # Hello <%= customer.name %> - # <% end %> - # - # # The layout - # <html> - # <%= yield Struct.new(:name).new("David") %> - # </html> - # - # In this case, the layout would receive the block passed into <tt>render :layout</tt>, - # and the struct specified would be passed into the block as an argument. The result - # would be - # - # <html> - # Hello David - # </html> - # - def _layout_for(*args, &block) #:nodoc: - name = args.first - - if name.is_a?(Symbol) - @_content_for[name].html_safe - elsif block - capture(*args, &block) - else - @_content_for[:layout].html_safe - end - end - - # This is the method which actually finds the layout using details in the lookup - # context object. If no layout is found, it checks if at least a layout with - # the given name exists across all details before raising the error. - def find_layout(layout) - begin - with_layout_format do - layout =~ /^\// ? - with_fallbacks { find_template(layout) } : find_template(layout) - end - rescue ActionView::MissingTemplate => e - update_details(:formats => nil) do - raise unless template_exists?(layout) - end - end - end - - # Contains the logic that actually renders the layout. - def _render_layout(layout, locals, &block) #:nodoc: - layout.render(self, locals){ |*name| _layout_for(*name, &block) } - end - end -end diff --git a/actionpack/lib/action_view/render/partials.rb b/actionpack/lib/action_view/render/partials.rb index cc9b444837..844c3e9572 100644 --- a/actionpack/lib/action_view/render/partials.rb +++ b/actionpack/lib/action_view/render/partials.rb @@ -210,165 +210,12 @@ module ActionView # <%- end -%> # <% end %> module Partials - extend ActiveSupport::Concern - - class PartialRenderer - PARTIAL_NAMES = Hash.new {|h,k| h[k] = {} } - - def initialize(view_context, options, block) - @view = view_context - @partial_names = PARTIAL_NAMES[@view.controller.class.name] - - setup(options, block) - end - - def setup(options, block) - partial = options[:partial] - - @options = options - @locals = options[:locals] || {} - @block = block - - if String === partial - @object = options[:object] - @path = partial - @collection = collection - else - @object = partial - - if @collection = collection - paths = @collection_paths = @collection.map { |o| partial_path(o) } - @path = paths.uniq.size == 1 ? paths.first : nil - else - @path = partial_path - end - end - end - - def render - identifier = ((@template = find_template) ? @template.identifier : @path) - - if @collection - ActiveSupport::Notifications.instrument("render_collection.action_view", - :identifier => identifier || "collection", :count => @collection.size) do - render_collection - end - else - content = ActiveSupport::Notifications.instrument("render_partial.action_view", - :identifier => identifier) do - render_partial - end - - if !@block && (layout = @options[:layout]) - content = @view._render_layout(find_template(layout), @locals){ content } - end - - content - end - end - - def render_collection - return nil if @collection.blank? - - if @options.key?(:spacer_template) - spacer = find_template(@options[:spacer_template]).render(@view, @locals) - end - - result = @template ? collection_with_template : collection_without_template - result.join(spacer).html_safe - end - - def collection_with_template(template = @template) - segments, locals, template = [], @locals, @template - - if @options[:as] - as = @options[:as] - counter = "#{as}_counter".to_sym - else - as = template.variable_name - counter = template.counter_name - end - - locals[counter] = -1 - - @collection.each do |object| - locals[counter] += 1 - locals[as] = object - segments << template.render(@view, locals) - end - - segments - end - - def collection_without_template(collection_paths = @collection_paths) - segments, locals = [], @locals - index, template = -1, nil - - if @options[:as] - as = @options[:as] - counter = "#{as}_counter" - end - - @collection.each_with_index do |object, i| - template = find_template(collection_paths[i]) - locals[as || template.variable_name] = object - locals[counter || template.counter_name] = (index += 1) - - segments << template.render(@view, locals) - end - - @template = template - segments - end - - def render_partial(object = @object) - locals, view, template = @locals, @view, @template - - object ||= locals[template.variable_name] - locals[@options[:as] || template.variable_name] = object - - template.render(view, locals) do |*name| - view._layout_for(*name, &@block) - end - end - - private - - def collection - if @object.respond_to?(:to_ary) - @object - elsif @options.key?(:collection) - @options[:collection] || [] - end - end - - def find_template(path=@path) - return path unless path.is_a?(String) - prefix = @view.controller_path unless path.include?(?/) - @view.find_template(path, prefix, true) - end - - def partial_path(object = @object) - @partial_names[object.class.name] ||= begin - object = object.to_model if object.respond_to?(:to_model) - - object.class.model_name.partial_path.dup.tap do |partial| - path = @view.controller_path - partial.insert(0, "#{File.dirname(path)}/") if partial.include?(?/) && path.include?(?/) - end - end - end - end - def _render_partial(options, &block) #:nodoc: - if defined?(@renderer) - @renderer.setup(options, block) - else - @renderer = PartialRenderer.new(self, options, block) - end - - @renderer.render + _partial_renderer.setup(options, block).render end + def _partial_renderer #:nodoc: + @_partial_renderer ||= PartialRenderer.new(self) + end end end diff --git a/actionpack/lib/action_view/render/rendering.rb b/actionpack/lib/action_view/render/rendering.rb index 5320245173..baa5d2c3fd 100644 --- a/actionpack/lib/action_view/render/rendering.rb +++ b/actionpack/lib/action_view/render/rendering.rb @@ -10,6 +10,7 @@ module ActionView # * <tt>:file</tt> - Renders an explicit template file (this used to be the old default), add :locals to pass in those. # * <tt>:inline</tt> - Renders an inline template similar to how it's done in the controller. # * <tt>:text</tt> - Renders the text passed in out. + # * <tt>:once</tt> - Accepts a string or an array of strings and Rails will ensure they each of them are rendered just once. # # If no options hash is passed or :update specified, the default is to render a partial and use the second parameter # as the locals hash. @@ -20,10 +21,10 @@ module ActionView _render_partial(options.merge(:partial => options[:layout]), &block) elsif options.key?(:partial) _render_partial(options) + elsif options.key?(:once) + _render_once(options) else - template = _determine_template(options) - lookup_context.freeze_formats(template.formats, true) - _render_template(template, options[:layout], options) + _render_template(options) end when :update update_page(&block) @@ -32,36 +33,74 @@ module ActionView end end - # Determine the template to be rendered using the given options. - def _determine_template(options) #:nodoc: - if options.key?(:inline) - handler = Template.handler_class_for_extension(options[:type] || "erb") - Template.new(options[:inline], "inline template", handler, {}) - elsif options.key?(:text) - Template::Text.new(options[:text], formats.try(:first)) - elsif options.key?(:file) - with_fallbacks { find_template(options[:file], options[:prefix]) } - elsif options.key?(:template) - options[:template].respond_to?(:render) ? - options[:template] : find_template(options[:template], options[:prefix]) + # Returns the contents that are yielded to a layout, given a name or a block. + # + # You can think of a layout as a method that is called with a block. If the user calls + # <tt>yield :some_name</tt>, the block, by default, returns <tt>content_for(:some_name)</tt>. + # If the user calls simply +yield+, the default block returns <tt>content_for(:layout)</tt>. + # + # The user can override this default by passing a block to the layout: + # + # # The template + # <%= render :layout => "my_layout" do %> + # Content + # <% end %> + # + # # The layout + # <html> + # <%= yield %> + # </html> + # + # In this case, instead of the default block, which would return <tt>content_for(:layout)</tt>, + # this method returns the block that was passed in to <tt>render :layout</tt>, and the response + # would be + # + # <html> + # Content + # </html> + # + # Finally, the block can take block arguments, which can be passed in by +yield+: + # + # # The template + # <%= render :layout => "my_layout" do |customer| %> + # Hello <%= customer.name %> + # <% end %> + # + # # The layout + # <html> + # <%= yield Struct.new(:name).new("David") %> + # </html> + # + # In this case, the layout would receive the block passed into <tt>render :layout</tt>, + # and the struct specified would be passed into the block as an argument. The result + # would be + # + # <html> + # Hello David + # </html> + # + def _layout_for(*args, &block) + name = args.first + + if name.is_a?(Symbol) + @_content_for[name].html_safe + elsif block + capture(*args, &block) + else + @_content_for[:layout].html_safe end end - # Renders the given template. An string representing the layout can be - # supplied as well. - def _render_template(template, layout = nil, options = {}) #:nodoc: - locals = options[:locals] || {} - layout = find_layout(layout) if layout - - ActiveSupport::Notifications.instrument("render_template.action_view", - :identifier => template.identifier, :layout => layout.try(:virtual_path)) do + def _render_once(options) #:nodoc: + _template_renderer.render_once(options) + end - content = template.render(self, locals) { |*name| _layout_for(*name) } - @_content_for[:layout] = content if layout + def _render_template(options) #:nodoc: + _template_renderer.render(options) + end - content = _render_layout(layout, locals) if layout - content - end + def _template_renderer #:nodoc: + @_template_renderer ||= TemplateRenderer.new(self) end end end |