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synced 2022-11-09 12:12:34 -05:00
98 lines
3.3 KiB
Ruby
98 lines
3.3 KiB
Ruby
require 'set'
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require 'active_support/core_ext/object/try'
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require 'active_support/core_ext/array/wrap'
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require 'action_view/renderer/abstract_renderer'
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module ActionView
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class TemplateRenderer < AbstractRenderer #:nodoc:
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attr_reader :rendered
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def initialize(view)
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super
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@rendered = Set.new
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end
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def render(options)
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wrap_formats(options[:template] || options[:file]) do
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template = determine_template(options)
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render_template(template, options[:layout], options[:locals])
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end
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end
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def render_once(options)
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paths, locals = options[:once], options[:locals] || {}
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layout, keys = options[:layout], locals.keys
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prefixes = options.fetch(:prefixes, @view.controller_prefixes)
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raise "render :once expects a String or an Array to be given" unless paths
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render_with_layout(layout, locals) do
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contents = []
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Array.wrap(paths).each do |path|
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template = find_template(path, prefixes, false, keys)
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contents << render_template(template, nil, locals) if @rendered.add?(template)
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end
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contents.join("\n")
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end
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end
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# Determine the template to be rendered using the given options.
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def determine_template(options) #:nodoc:
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keys = options[:locals].try(:keys) || []
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if options.key?(:text)
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Template::Text.new(options[:text], formats.try(:first))
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elsif options.key?(:file)
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with_fallbacks { find_template(options[:file], [], false, keys) }
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elsif options.key?(:inline)
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handler = Template.handler_for_extension(options[:type] || "erb")
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Template.new(options[:inline], "inline template", handler, :locals => keys)
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elsif options.key?(:template)
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options[:template].respond_to?(:render) ?
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options[:template] : find_template(options[:template], options[:prefixes], false, keys)
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end
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end
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# Renders the given template. An string representing the layout can be
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# supplied as well.
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def render_template(template, layout_name = nil, locals = {}) #:nodoc:
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freeze_formats(template.formats, true)
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view, locals = @view, locals || {}
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render_with_layout(layout_name, locals) do |layout|
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instrument(:template, :identifier => template.identifier, :layout => layout.try(:virtual_path)) do
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template.render(view, locals) { |*name| view._layout_for(*name) }
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end
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end
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end
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def render_with_layout(path, locals) #:nodoc:
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layout = path && find_layout(path, locals.keys)
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content = yield(layout)
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if layout
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view = @view
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view.store_content_for(:layout, content)
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layout.render(view, locals){ |*name| view._layout_for(*name) }
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else
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content
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end
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end
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# This is the method which actually finds the layout using details in the lookup
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# context object. If no layout is found, it checks if at least a layout with
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# the given name exists across all details before raising the error.
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def find_layout(layout, keys)
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begin
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with_layout_format do
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layout =~ /^\// ?
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with_fallbacks { find_template(layout, nil, false, keys) } : find_template(layout, nil, false, keys)
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end
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rescue ActionView::MissingTemplate => e
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update_details(:formats => nil) do
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raise unless template_exists?(layout)
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end
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end
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end
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end
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end
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