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110 lines
4.1 KiB
Ruby
110 lines
4.1 KiB
Ruby
# frozen_string_literal: true
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module ActionView
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class TemplateRenderer < AbstractRenderer #:nodoc:
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def render(context, options)
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@details = extract_details(options)
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template = determine_template(options)
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prepend_formats(template.format)
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render_template(context, template, options[:layout], options[:locals] || {})
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end
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private
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# Determine the template to be rendered using the given options.
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def determine_template(options)
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keys = options.has_key?(:locals) ? options[:locals].keys : []
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if options.key?(:body)
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Template::Text.new(options[:body])
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elsif options.key?(:plain)
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Template::Text.new(options[:plain])
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elsif options.key?(:html)
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Template::HTML.new(options[:html], formats.first)
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elsif options.key?(:file)
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if File.exist?(options[:file])
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Template::RawFile.new(options[:file])
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else
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raise ArgumentError, "`render file:` should be given the absolute path to a file. '#{options[:file]}' was given instead"
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end
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elsif options.key?(:inline)
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handler = Template.handler_for_extension(options[:type] || "erb")
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format = if handler.respond_to?(:default_format)
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handler.default_format
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else
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@lookup_context.formats.first
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end
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Template::Inline.new(options[:inline], "inline template", handler, locals: keys, format: format)
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elsif options.key?(:renderable)
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Template::Renderable.new(options[:renderable])
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elsif options.key?(:template)
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if options[:template].respond_to?(:render)
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options[:template]
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else
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@lookup_context.find_template(options[:template], options[:prefixes], false, keys, @details)
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end
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else
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raise ArgumentError, "You invoked render but did not give any of :partial, :template, :inline, :file, :plain, :html or :body option."
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end
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end
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# Renders the given template. A string representing the layout can be
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# supplied as well.
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def render_template(view, template, layout_name, locals)
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render_with_layout(view, template, layout_name, locals) do |layout|
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ActiveSupport::Notifications.instrument(
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"render_template.action_view",
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identifier: template.identifier,
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layout: layout && layout.virtual_path
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) 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(view, template, path, locals)
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layout = path && find_layout(path, locals.keys, [formats.first])
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body = if layout
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ActiveSupport::Notifications.instrument("render_layout.action_view", identifier: layout.identifier) do
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view.view_flow.set(:layout, yield(layout))
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layout.render(view, locals) { |*name| view._layout_for(*name) }
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end
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else
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yield
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end
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build_rendered_template(body, template)
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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, formats)
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resolve_layout(layout, keys, formats)
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end
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def resolve_layout(layout, keys, formats)
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details = @details.dup
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details[:formats] = formats
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case layout
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when String
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begin
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if layout.start_with?("/")
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raise ArgumentError, "Rendering layouts from an absolute path is not supported."
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else
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@lookup_context.find_template(layout, nil, false, [], details)
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end
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rescue ActionView::MissingTemplate
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all_details = @details.merge(formats: @lookup_context.default_formats)
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raise unless template_exists?(layout, nil, false, [], **all_details)
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end
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when Proc
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resolve_layout(layout.call(@lookup_context, formats), keys, formats)
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else
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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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