On Nov 4, 4:05 pm, JavierQQ <[email protected]> wrote: > > I want that the data validates in 2 cases (create / update) > because when I want to update , for example: > > Evaluation 1 > - Question 1 > > If I update question 1 and change the content, and then I save > it shows a error message that says "The number is being used" (and > that shows that > validates_uniqueness_of :qnumber, :scope works) > I want that it only validates it when I'm CREATING a new one, not when > I'm UPDATING >
validations are fundamentally ignorant of what it is that has caused save to be called (i.e. it doesn't know what action, controller etc. There might not even be a controller if the code was being run from a background task). The validation methods do take an on option (:on => :create or :on => :update) but you should understand that this refers to whether active record is create or updating an object and has nothing to do with what controller action was involved. However, validates_uniqueness_of should already be adding a condition to the query so that when updating an existing object it doesn't find itself, so I'm not sure why you're running into this Fred > How can I do that? > > On 4 nov, 10:55, Colin Law <[email protected]> wrote: > > > > > > > > > On 4 November 2011 15:40, JavierQQ <[email protected]> wrote: > > > > Hi > > > > I hope someone can help me with this > > > > I have a model Question, and its controller .. what I've done to > > > validate that there's no evaluation with 2 question with the same > > > number is > > > > validates_uniqueness_of :qnumber, :scope > > > => :evaluation_id > > > > but when I try to update a question's content I got an error message > > > that says that "#{qnumber} has already been taken" > > > and that means that the validation works, but not as I want > > > > Can I obtain wich "def" is using ? because I want to do this > > > - Question Model > > > > IF ("def create" or something) > > > do the validation > > > elsif ("def update") > > > don't do it > > > end > > > I don't know what you mean by "def" but if you want to do conditional > > validations have a look at the Rails Guide on validations and it will > > show you how. > > > Colin -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
