Advanced activerecord validation

Rails
1

Hey everyone,

I was wondering if its possible that something like this:

validates_presence_of :image_1

is only run when in a particular :action.

Petr

2

petr wrote:

I was wondering if its possible that something like this:

validates_presence_of :image_1

is only run when in a particular :action.

Take a look at the :if parameter in the documentation.

  • Roderick
3

Roderick van Domburg wrote:

petr wrote:

I was wondering if its possible that something like this:

validates_presence_of :image_1

is only run when in a particular :action.

Take a look at the :if parameter in the documentation.

  • Roderick

I did, however im not any smarter from it! How would you run a
validation only for action “add” ?

4

model validations aren’t tied in any way to controller actions, and
you shouldn’t really have a need to this. what i think you might want
to use is the :on option

validates_presence_of :image_1, :on => …

:save - default, validates anytime model is saved (insert or update)
:create - only validates when model is created (insert)
:update - only validates when model is updated (update)