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require 'abstract_unit'
# This is testing the decoupling of view renderer and view context
# by allowing the controller to be used as view context. This is
# similar to the way sinatra renders templates.
module RenderContext
class BasicController < ActionController::Base
self.view_paths = [ActionView::FixtureResolver.new(
"render_context/basic/hello_world.html.erb" => "<%= @value %> from <%= self.__controller_method__ %>",
"layouts/basic.html.erb" => "?<%= yield %>?"
)]
# 1) Include ActionView::Context to bring the required dependencies
include ActionView::Context
# 2) Call _prepare_context that will do the required initialization
before_action :_prepare_context
def hello_world
@value = "Hello"
render :action => "hello_world", :layout => false
end
def with_layout
@value = "Hello"
render :action => "hello_world", :layout => "basic"
end
protected
# 3) Set view_context to self
def view_context
self
end
def __controller_method__
"controller context!"
end
end
class RenderContextTest < Rack::TestCase
test "rendering using the controller as context" do
get "/render_context/basic/hello_world"
assert_body "Hello from controller context!"
assert_status 200
end
test "rendering using the controller as context with layout" do
get "/render_context/basic/with_layout"
assert_body "?Hello from controller context!?"
assert_status 200
end
end
end
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