validates_presence_of(*attr_names) public

Validates that the specified attributes are not blank (as defined by Object#blank?). Happens by default on save.

Configuration options:

  • message - A custom error message (default is: "can’t be blank")
  • on - Specifies when this validation is active (default is :save, other options :create, :update)
  • if - Specifies a method, proc or string to call to determine if the validation should

occur (e.g. :if => :allow_validation, or :if => Proc.new { |user| user.signup_step > 2 }). The method, proc or string should return or evaluate to a true or false value.

Show source
Register or log in to add new notes.