Compile a template. This method ensures a template is compiled just once
and removes the source
after it is compiled.
# File actionview/lib/action_view/template.rb, line 226
def compile!(view) #:nodoc:
return if @compiled
# Templates can be used concurrently in threaded environments
# so compilation and any instance variable modification must
# be synchronized
@compile_mutex.synchronize do
# Any thread holding this lock will be compiling the template needed
# by the threads waiting. So re-check the @compiled flag to avoid
# re-compilation
return if @compiled
if view.is_a?(ActionView::CompiledTemplates)
mod = ActionView::CompiledTemplates
else
mod = view.singleton_class
end
instrument("!compile_template") do
compile(mod)
end
# Just discard the source if we have a virtual path. This
# means we can get the template back.
@source = nil if @virtual_path
@compiled = true
end
end
