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module ActionView #:nodoc:
class PartialTemplate < Template #:nodoc:
attr_reader :variable_name, :object
def initialize(view, partial_path, object = nil, locals = {})
@path, @variable_name = extract_partial_name_and_path(view, partial_path)
super(view, @path, true, locals)
add_object_to_local_assigns!(object)
# This is needed here in order to compile template with knowledge of 'counter'
initialize_counter
# Prepare early. This is a performance optimization for partial collections
prepare!
end
def render
ActionController::Base.benchmark("Rendered #{@path}", Logger::DEBUG, false) do
@handler.render(self)
end
end
def render_member(object)
@locals[:object] = @locals[@variable_name] = object
template = render_template
@locals[@counter_name] += 1
@locals.delete(@variable_name)
@locals.delete(:object)
template
end
def counter=(num)
@locals[@counter_name] = num
end
private
def add_object_to_local_assigns!(object)
@locals[:object] ||=
@locals[@variable_name] ||=
if object.is_a?(ActionView::Base::ObjectWrapper)
object.value
else
object
end || @view.controller.instance_variable_get("@#{variable_name}")
end
def extract_partial_name_and_path(view, partial_path)
path, partial_name = partial_pieces(view, partial_path)
[File.join(path, "_#{partial_name}"), partial_name.split('/').last.split('.').first.to_sym]
end
def partial_pieces(view, partial_path)
if partial_path.include?('/')
return File.dirname(partial_path), File.basename(partial_path)
else
return view.controller.class.controller_path, partial_path
end
end
def initialize_counter
@counter_name ||= "#{@variable_name}_counter".to_sym
@locals[@counter_name] = 0
end
end
end
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