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Diffstat (limited to 'actionpack/lib/action_view/render/rendering.rb')
-rw-r--r-- | actionpack/lib/action_view/render/rendering.rb | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/actionpack/lib/action_view/render/rendering.rb b/actionpack/lib/action_view/render/rendering.rb new file mode 100644 index 0000000000..a9b2acecd5 --- /dev/null +++ b/actionpack/lib/action_view/render/rendering.rb @@ -0,0 +1,114 @@ +module ActionView + module Rendering + # Returns the result of a render that's dictated by the options hash. The primary options are: + # + # * <tt>:partial</tt> - See ActionView::Partials. + # * <tt>:update</tt> - Calls update_page with the block given. + # * <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. + # + # 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. + def render(options = {}, local_assigns = {}, &block) #:nodoc: + local_assigns ||= {} + + @exempt_from_layout = true + + case options + when Hash + options[:locals] ||= {} + layout = options[:layout] + + return _render_partial_with_layout(layout, options) if options.key?(:partial) + return _render_partial_with_block(layout, block, options) if block_given? + + layout = find_by_parts(layout, formats) if layout + + if file = options[:file] + template = find_by_parts(file, formats) + _render_template_with_layout(template, layout, :locals => options[:locals]) + elsif inline = options[:inline] + _render_inline(inline, layout, options) + elsif text = options[:text] + _render_text(text, layout, options) + end + when :update + update_page(&block) + when String, NilClass + _render_partial(:partial => options, :locals => local_assigns) + end + end + + def _render_content_with_layout(content, layout, locals) + return content unless layout + + locals ||= {} + + if controller && layout + response.layout = layout.path_without_format_and_extension if controller.respond_to?(:response) + logger.info("Rendering template within #{layout.path_without_format_and_extension}") if logger + end + + begin + original_content_for_layout = @content_for_layout if defined?(@content_for_layout) + @content_for_layout = content + + @cached_content_for_layout = @content_for_layout + _render_template(layout, locals) + ensure + @content_for_layout = original_content_for_layout + end + end + + def _render_template(template, local_assigns = {}) + with_template(template) do + _evaluate_assigns_and_ivars + _set_controller_content_type(template.mime_type) if template.respond_to?(:mime_type) + + template.render(self, local_assigns) do |*names| + if !instance_variable_defined?(:"@content_for_#{names.first}") && + instance_variable_defined?(:@_proc_for_layout) && (proc = @_proc_for_layout) + capture(*names, &proc) + elsif instance_variable_defined?(ivar = :"@content_for_#{names.first || :layout}") + instance_variable_get(ivar) + end + end + end + rescue Exception => e + raise e if template.is_a?(InlineTemplate) || !template.filename + if TemplateError === e + e.sub_template_of(template) + raise e + else + raise TemplateError.new(template, assigns, e) + end + end + + def _render_inline(inline, layout, options) + content = _render_template(InlineTemplate.new(options[:inline], options[:type]), options[:locals] || {}) + layout ? _render_content_with_layout(content, layout, options[:locals]) : content + end + + def _render_text(text, layout, options) + layout ? _render_content_with_layout(text, layout, options[:locals]) : text + end + + def _render_template_with_layout(template, layout = nil, options = {}, partial = false) + if controller && logger + logger.info("Rendering #{template.path_without_extension}" + + (options[:status] ? " (#{options[:status]})" : '')) + end + + content = if partial + object = partial unless partial == true + _render_partial_object(template, options, object) + else + _render_template(template, options[:locals] || {}) + end + + return content unless layout && !template.exempt_from_layout? + _render_content_with_layout(content, layout, options[:locals] || {}) + end + end +end
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