Model validation

rubyonrails-talk
1

Hi,

I don't understand the validate method inside the model objet, when using the fields are always empty ?

class Personne < ActiveRecord::Base     set_table_name 'personnes'

    has_many :emails

    protected

    def validate         if nom = ""             errors.add( "nom", "Le nom ne peut pas etre vide" )         end         if prenom = ""             errors.add( "prenom", "Le prenom ne peut pas etre vide" )         end     end

end

Thank you for your help

2

    def validate         if nom = ""             errors.add( "nom", "Le nom ne peut pas etre vide" )         end         if prenom = ""             errors.add( "prenom", "Le prenom ne peut pas etre vide" )         end     end

You are setting nom equal to blank by using nom = "". Instead, write nom == "" to compare nom to blank. Of course you'll do the same with prenom.

3

Hey Alex,

you can use the method "validates_presence_of" to validate the fields in blank:

class Personne < ActiveRecord::Base     set_table_name 'personnes'

    has_many :emails

    validates_presence_of :nom, :message => "Le nom ne peut pas etre vide"     validates_presence_of :prenom, :message => "Le prenom ne peut pas etre vide" end

I hope I help you.

4

Thank you a lot !

No comment about the = and ==, this is the result of working being tired…