Module: Skr::Concerns::RandomHashCode::ClassMethods

Defined in:
lib/skr/concerns/random_hash_code.rb

Overview

### Random Hash Code Concern This adds the #has_random_hash_code class method

Instance Method Summary collapse

Instance Method Details

#has_random_hash_code(field_name: :hash_code, length: 12) ⇒ Object

A random string that identifies an entity, such as a Customer, or Vendor The code is generated by Strings.random for new records It’s useful for generating magic links for access to an entity that cannot be guessed.

Parameters:

  • field_name (Symbol) (defaults to: :hash_code) —

    which field should the hash_code be stored in

  • length (Integer) (defaults to: 12) —

    how long the hash_code should be



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# File 'lib/skr/concerns/random_hash_code.rb', line 19

def has_random_hash_code( field_name: :hash_code, length: 12 )

    validates field_name, :presence=>{
        :message=>"hash code is not set (should be automatically chosen)"
    }

    scope :with_hash_code, lambda{ | code |
        where({ :hash_code=>code })
    }

    before_validation(:on=>:create) do
        self[ field_name ] = Lanes::Strings.random( length ) if self[ field_name ].blank?
    end

end