RailsModels

#####Validation

Contained within Model..

• validates_presence_of :<column>
• validates_numerically_of :<column>
• validates_uniqueness_of :<column>
• validates_confirmation_of :<column> same as other column e.g.. password
• validates_acceptance_of :<column> make sure value is true e.g.. acceptance check box
• validates_length_of :<column>, minimum: 3 - length of field
• validates_format_of :<column> with: /regex/ - check format with a regular expression
• validates_inclusion_of :age, in: 21..99 - checks a value is within a range
• validates_exclusion_of :age, in: 0..21, message: "sorry you must be over 21" - is outside a range

or

validates :status, presence: true, length: { minimum:3 }