diff options
Diffstat (limited to 'actionpack/lib/action_view/base.rb')
| -rw-r--r-- | actionpack/lib/action_view/base.rb | 127 |
1 files changed, 52 insertions, 75 deletions
diff --git a/actionpack/lib/action_view/base.rb b/actionpack/lib/action_view/base.rb index ab8c6259c5..c98110353f 100644 --- a/actionpack/lib/action_view/base.rb +++ b/actionpack/lib/action_view/base.rb @@ -8,13 +8,12 @@ require 'action_view/log_subscriber' module ActionView #:nodoc: # = Action View Base # - # Action View templates can be written in three ways. If the template file has a <tt>.erb</tt> (or <tt>.rhtml</tt>) extension then it uses a mixture of ERb + # Action View templates can be written in several ways. If the template file has a <tt>.erb</tt> (or <tt>.rhtml</tt>) extension then it uses a mixture of ERb # (included in Ruby) and HTML. If the template file has a <tt>.builder</tt> (or <tt>.rxml</tt>) extension then Jim Weirich's Builder::XmlMarkup library is used. - # If the template file has a <tt>.rjs</tt> extension then it will use ActionView::Helpers::PrototypeHelper::JavaScriptGenerator. # - # == ERb + # == ERB # - # You trigger ERb by using embeddings such as <% %>, <% -%>, and <%= %>. The <%= %> tag set is used when you want output. Consider the + # You trigger ERB by using embeddings such as <% %>, <% -%>, and <%= %>. The <%= %> tag set is used when you want output. Consider the # following loop for names: # # <b>Names of all the people</b> @@ -23,7 +22,7 @@ module ActionView #:nodoc: # <% end %> # # The loop is setup in regular embedding tags <% %> and the name is written using the output embedding tag <%= %>. Note that this - # is not just a usage suggestion. Regular output functions like print or puts won't work with ERb templates. So this would be wrong: + # is not just a usage suggestion. Regular output functions like print or puts won't work with ERB templates. So this would be wrong: # # <%# WRONG %> # Hi, Mr. <% puts "Frodo" %> @@ -81,7 +80,7 @@ module ActionView #:nodoc: # # == Builder # - # Builder templates are a more programmatic alternative to ERb. They are especially useful for generating XML content. An XmlMarkup object + # Builder templates are a more programmatic alternative to ERB. They are especially useful for generating XML content. An XmlMarkup object # named +xml+ is automatically made available to templates with a <tt>.builder</tt> extension. # # Here are some basic examples: @@ -131,41 +130,18 @@ module ActionView #:nodoc: # end # # More builder documentation can be found at http://builder.rubyforge.org. - # - # == JavaScriptGenerator - # - # JavaScriptGenerator templates end in <tt>.rjs</tt>. Unlike conventional templates which are used to - # render the results of an action, these templates generate instructions on how to modify an already rendered page. This makes it easy to - # modify multiple elements on your page in one declarative Ajax response. Actions with these templates are called in the background with Ajax - # and make updates to the page where the request originated from. - # - # An instance of the JavaScriptGenerator object named +page+ is automatically made available to your template, which is implicitly wrapped in an ActionView::Helpers::PrototypeHelper#update_page block. - # - # When an <tt>.rjs</tt> action is called with +link_to_remote+, the generated JavaScript is automatically evaluated. Example: - # - # link_to_remote :url => {:action => 'delete'} - # - # The subsequently rendered <tt>delete.rjs</tt> might look like: - # - # page.replace_html 'sidebar', :partial => 'sidebar' - # page.remove "person-#{@person.id}" - # page.visual_effect :highlight, 'user-list' - # - # This refreshes the sidebar, removes a person element and highlights the user list. - # - # See the ActionView::Helpers::PrototypeHelper::JavaScriptGenerator::GeneratorMethods documentation for more details. class Base - include Helpers, Rendering, Partials, ::ERB::Util, Context - - # Specify whether RJS responses should be wrapped in a try/catch block - # that alert()s the caught exception (and then re-raises it). - cattr_accessor :debug_rjs - @@debug_rjs = false + include Helpers, ::ERB::Util, Context # Specify the proc used to decorate input tags that refer to attributes with errors. cattr_accessor :field_error_proc @@field_error_proc = Proc.new{ |html_tag, instance| "<div class=\"field_with_errors\">#{html_tag}</div>".html_safe } + # How to complete the streaming when an exception occurs. + # This is our best guess: first try to close the attribute, then the tag. + cattr_accessor :streaming_completion_on_exception + @@streaming_completion_on_exception = %("><script type="text/javascript">window.location = "/500.html"</script></html>) + class_attribute :helpers class_attribute :_routes @@ -180,60 +156,61 @@ module ActionView #:nodoc: def cache_template_loading=(value) ActionView::Resolver.caching = value end - end - - attr_accessor :_template - attr_internal :request, :controller, :config, :assigns, :lookup_context - - delegate :formats, :formats=, :locale, :locale=, :view_paths, :view_paths=, :to => :lookup_context - delegate :request_forgery_protection_token, :params, :session, :cookies, :response, :headers, - :flash, :action_name, :controller_name, :to => :controller + def process_view_paths(value) + value.is_a?(PathSet) ? + value.dup : ActionView::PathSet.new(Array.wrap(value)) + end - delegate :logger, :to => :controller, :allow_nil => true + def xss_safe? #:nodoc: + true + end - def self.xss_safe? #:nodoc: - true + # This method receives routes and helpers from the controller + # and return a subclass ready to be used as view context. + def prepare(routes, helpers) #:nodoc: + Class.new(self) do + if routes + include routes.url_helpers + include routes.mounted_helpers + end + + if helpers + include helpers + self.helpers = helpers + end + end + end end - def self.process_view_paths(value) - value.is_a?(PathSet) ? - value.dup : ActionView::PathSet.new(Array.wrap(value)) - end + attr_accessor :view_renderer + attr_internal :config, :assigns + + delegate :lookup_context, :to => :view_renderer + delegate :formats, :formats=, :locale, :locale=, :view_paths, :view_paths=, :to => :lookup_context def assign(new_assigns) # :nodoc: @_assigns = new_assigns.each { |key, value| instance_variable_set("@#{key}", value) } end - def initialize(lookup_context = nil, assigns_for_first_render = {}, controller = nil, formats = nil) #:nodoc: - assign(assigns_for_first_render) - self.helpers = Module.new unless self.class.helpers - + def initialize(context = nil, assigns = {}, controller = nil, formats = nil) #:nodoc: @_config = {} - @_content_for = Hash.new { |h,k| h[k] = ActiveSupport::SafeBuffer.new } - @_virtual_path = nil - @output_buffer = nil - if @_controller = controller - @_request = controller.request if controller.respond_to?(:request) - @_config = controller.config.inheritable_copy if controller.respond_to?(:config) + # Handle all these for backwards compatibility. + # TODO Provide a new API for AV::Base and deprecate this one. + if context.is_a?(ActionView::Renderer) + @view_renderer = context + elsif + lookup_context = context.is_a?(ActionView::LookupContext) ? + context : ActionView::LookupContext.new(context) + lookup_context.formats = formats if formats + lookup_context.prefixes = controller._prefixes if controller + @view_renderer = ActionView::Renderer.new(lookup_context) end - @_lookup_context = lookup_context.is_a?(ActionView::LookupContext) ? - lookup_context : ActionView::LookupContext.new(lookup_context) - @_lookup_context.formats = formats if formats - end - - def store_content_for(key, value) - @_content_for[key] = value - end - - def controller_path - @controller_path ||= controller && controller.controller_path - end - - def controller_prefixes - @controller_prefixes ||= controller && controller._prefixes + assign(assigns) + assign_controller(controller) + _prepare_context end ActiveSupport.run_load_hooks(:action_view, self) |