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# encoding: utf-8
module ActionView
# NOTE: The template that this mixin is being included into is frozen
# so you cannot set or modify any instance variables
module Renderable #:nodoc:
extend ActiveSupport::Memoizable
def render(view, locals)
compile(locals)
view.send(method_name(locals), locals) {|*args| yield(*args) }
end
def load!
names = CompiledTemplates.instance_methods.grep(/#{method_name_without_locals}/)
names.each do |name|
CompiledTemplates.class_eval do
remove_method(name)
end
end
super
end
private
def filename
'compiled-template'
end
def handler
Template.handler_class_for_extension(extension)
end
memoize :handler
def compiled_source
handler.call(self)
end
memoize :compiled_source
def method_name_without_locals
['_run', extension, method_segment].compact.join('_')
end
memoize :method_name_without_locals
def method_name(local_assigns)
if local_assigns && local_assigns.any?
method_name = method_name_without_locals.dup
method_name << "_locals_#{local_assigns.keys.map { |k| k.to_s }.sort.join('_')}"
else
method_name = method_name_without_locals
end
method_name.to_sym
end
# Compile and evaluate the template's code (if necessary)
def compile(local_assigns)
render_symbol = method_name(local_assigns)
if !CompiledTemplates.method_defined?(render_symbol) || recompile?
compile!(render_symbol, local_assigns)
end
end
private
def compile!(render_symbol, local_assigns)
locals_code = local_assigns.keys.map { |key| "#{key} = local_assigns[:#{key}];" }.join
source = <<-end_src
def #{render_symbol}(local_assigns)
old_output_buffer = output_buffer;#{locals_code};#{compiled_source}
ensure
self.output_buffer = old_output_buffer
end
end_src
begin
ActionView::CompiledTemplates.module_eval(source, filename.to_s, 0)
rescue Exception => e # errors from template code
if logger = defined?(ActionController) && Base.logger
logger.debug "ERROR: compiling #{render_symbol} RAISED #{e}"
logger.debug "Function body: #{source}"
logger.debug "Backtrace: #{e.backtrace.join("\n")}"
end
raise ActionView::TemplateError.new(self, {}, e)
end
end
def recompile?
false
end
end
end
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