Module: Pakyow::Validations::Data::Unique

Defined in:
lib/pakyow/validations/data/unique.rb

Overview

Validates that the value is unique within its data source.

Class Method Summary collapse

Class Method Details

.message ⇒ Object 



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# File 'lib/pakyow/validations/data/unique.rb', line 11

def self.message(**)
  "must be unique"
end

.valid?(value, source:, **options) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/pakyow/validations/data/unique.rb', line 15

def self.valid?(value, source:, **options)
  query = options[:context].app.data.public_send(source).public_send(:"by_#{options[:key]}", value)

  if updating = options[:updating]
    if updating.is_a?(Pakyow::Data::Result)
      query.count == 0 || query.any? { |result|
        result[updating.__proxy.source.class.primary_key_field] == updating[updating.__proxy.source.class.primary_key_field]
      }
    else
      raise ArgumentError, "Expected `#{updating.class}' to be a `Pakyow::Data::Result'"
    end
  else
    query.count == 0
  end
end