Automatic scoping in controller based on params[]

Rails
1

Hi guys,

let’s say I have a nested route, like User > Roles

map.resources :user, :has_many => [ :roles ]

In this case, calling new_user_role_url gets me to the role
controller’s :create method with a user_id set in the parameters. Is
there a better way to handle the creation of this role object
automatically in the User object’s :roles association or I just have
to resort to the good old method of finding the appropriate user
object first and add the new role object to it’s association proxy:

@user = User.find(params[:id])

@user.roles << Role.create(params[:role])

Any ideas would be appreciated.

Regards,
András

–
Tarsoly András
[email protected]

2

User.find(params[:user_id]).roles.create(params[:role])

or

Role.create( params[:role].merge(:user_id => params[:user_id]) )

I would prefer the first way.

Sometimes is better to be more verbose

if user = User.find_by_id(params[:user_id])
user.create(params[:role])
end

what you might want to do is something like this especially if the
presence of the user is obbligatory:

before_filter :get_user
private
def get_user
@user = params[:user_id] || current_user
raise YourOwnCustomError unless @user
end
public

def create
@user.roles.create(params[:role])
end

Diego

On 9/6/07, Tarsoly András [email protected] wrote:

object’s :roles association or I just have to resort to the good old method

Tarsoly András
[email protected]

–
Diego Scataglini