the validation is for quantity of products, the idea is, if the user try to enter a quantity greater than the available quantity of products, then the validation error must show up.
The problem is, products are in differents storages, and storages belongs to a branch (a company or enterprise has a main office and has many branches). so, I have to start my validation finding the storages that belongs to a certain branch, when I have the storages I have to find the product and get the total quantity of that product. The thing is that, to get the branch id, I need to access to "session[:user].branch_id", but I can't do that in the model. Can you give me, please, an example of the last option "If all else fails you could add a non-database attribute to invoice details and set that prior to saving, then pick it up in the validation." I don't know how to add a non-database attribute in a _partial for nested attributes, neither how to set it prior to saving Could you help me, please On 17 nov, 13:59, Colin Law <[email protected]> wrote: > On 17 November 2011 16:46, Angelo Cordova <[email protected]> wrote: > > > Hello people. > > > I have a big problem here. In my rails 3.0.9 app I have a model > > "invoice" that model "accepts nested attributes" for "invoice > > details". So, I don't have a "controller" nor "views" for "invoice > > details", just model, because I have a "partial" in "invoices views" > > for the "nested attributes". > > > The thing is that I need to run a custom validation when every > > "invoice details" is created, and I need a variable stored in > > "session". But Models can not access "session" variables. > > > So I want to know, how can I access that variable and then use it in > > my validation. > > Is the custom validation to do with data in the invoice? I believe > you can access the invoice that the details belong to in the > validation. > > Also possibly reject_if on accepts_nested_attributes_for might do the job. > > If all else fails you could add a non-database attribute to invoice > details and set that prior to saving, then pick it up in the > validation. > > 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.
