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 => formats}) if layout
if file = options[:file]
template = find_by_parts(file, {:formats => 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
@_layout = layout.identifier
logger.info("Rendering template within #{layout.identifier}") 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
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)
handler = Template.handler_class_for_extension(options[:type] || "erb")
template = Template.new(options[:inline], "inline #{options[:inline].inspect}", handler, {})
content = _render_template(template, 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_from_controller(*args)
@assigns_added = nil
_render_template_with_layout(*args)
end
def _render_template_with_layout(template, layout = nil, options = {}, partial = false)
if controller && logger
logger.info("Rendering #{template.identifier}" +
(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
_render_content_with_layout(content, layout, options[:locals] || {})
end
end
end
