从同一控制器中的另一个方法调用Ruby on Rails控制器方法会跳过before_filter？

Question

In Ruby on Rails, when I call a controller method from another controller, the before_filter on the targeted method (the one being called) does not execute.

How can I get this to execute?

(Rough example code to follow)

before_filter :filter_method, :only => [:method_b]

def method_a
 if blahblahblah == x
   do_something
     render j
 else
   method_b
 end
end

def method_b
  do_something_else
end

so here filter_method would not execute, how can I change that without rewriting everything?

Answer 1

I think you missed how before_filter gets applied in rails. It's not applied when you call any method from where ever you want. It applies only when it maps request route to corresponding controller method. Before filter serves as guard process between request to controller method, not within it. :)

Answer 2

That's correct. Before actions are only ran when an action is called on the controller, not if you call it yourself.

The proper way to handle this depends on what your methods do. The current way still renders the view from method_b . Most likely what you want is to redirect to that action but the current way and rendering method_b are both possible as well.

The current way (fixed):

Calls method_b with filter method and renders view from method_a

def method_a
 if blahblahblah == x
   do_something
 else
   filter_method
   method_b unless performed? # In case filter_method renders/redirects
end

Rendering:

Calls method_b with filter method and renders view from method_b

def method_a
 if blahblahblah == x
   do_something
 else
   filter_method
   method_b unless performed?
   render :method_b unless performed?
end

Redirecting:

Tells the client (browser) to make a new request to method_b . This calls method_b with the filter method and renders view from method_b .

def method_a
 if blahblahblah == x
   do_something
 else
   redirect_to :method_b
end

Try these ways and see what suits your problem best. I cannot make this decision for you since the code example is pretty bare.