blob: 73c19a0ae2cce92f32066667a96c13aa853c4212 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
|
module ActionView
# This class defines the interface for a renderer. Each class that
# subclasses +AbstractRenderer+ is used by the base +Renderer+ class to
# render a specific type of object.
#
# The base +Renderer+ class uses its +render+ method to delegate to the
# renderers. These currently consist of
#
# PartialRenderer - Used for rendering partials
# TemplateRenderer - Used for rendering other types of templates
# StreamingTemplateRenderer - Used for streaming
#
# Whenever the +render+ method is called on the base +Renderer+ class, a new
# renderer object of the correct type is created, and the +render+ method on
# that new object is called in turn. This abstracts the setup and rendering
# into a separate classes for partials and templates.
class AbstractRenderer #:nodoc:
delegate :find_template, :template_exists?, :with_fallbacks, :with_layout_format, :formats, :to => :@lookup_context
def initialize(lookup_context)
@lookup_context = lookup_context
end
def render
raise NotImplementedError
end
protected
def extract_details(options)
@lookup_context.registered_details.each_with_object({}) do |key, details|
next unless value = options[key]
details[key] = Array(value)
end
end
def instrument(name, options={})
ActiveSupport::Notifications.instrument("render_#{name}.action_view", options){ yield }
end
def prepend_formats(formats)
formats = Array(formats)
return if formats.empty? || @lookup_context.html_fallback_for_js
@lookup_context.formats = formats | @lookup_context.formats
end
end
end
|
