Getting a variable defined in new action in create action

Suppose there are two models, one is User model and other is Referral
model. The root is root :to => 'users#new. Now the user will coming
here via example.com/value, where value is the id for Referral model.
Now using this value I have to increment two fields: One is visits,
which shows how many visits did that particular url bring. Other is
signup, which will increment if there is a signup using that value.

I have passed this value via routes in users#new, which I use to
increment the visits column of Referral model. Now if the users
signup, the users#create would be executed, and I want to be able to
use the value in the create action as well, to increment the signup
column in Referral model.

As of now, I understand that the instance variable I created in new
action to store the value cannot be used in create action. Now how can
I achieve this.

On Oct 16, 1:47pm, Colin L. [email protected] wrote:

You could save it in the session.

Colin

Can you show me with a example, railsguide does not has very good
documentation on sessions. I do not understand, where to initialize
sessions and how to use.

On 17 October 2011 08:53, Nikhil G. [email protected] wrote:

sessions and how to use.
I think
http://guides.rubyonrails.org/action_controller_overview.html#session
pretty much covers it. It is very simple as can be seen in the
examples there. Just set a value in the session in the controller
(something like session[:current_user_id] = user.id for example) and
access it again in a later action. Initially at least you can just
leave all the session config stuff at default and just go ahead and
use it.

Colin

On 16 October 2011 09:19, Nikhil G. [email protected] wrote:

use the value in the create action as well, to increment the signup
column in Referral model.

As of now, I understand that the instance variable I created in new
action to store the value cannot be used in create action. Now how can
I achieve this.

You could save it in the session.

Colin

There is not much to explain…

Just use session[:key] and it will work. Rails handles all the other
stuff
for you.

Only thing someone other has to explain would be expiering.


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Am 17.10.2011 09:53 schrieb “Nikhil G.” [email protected]:

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