Class: Quiver::Validator

Inherits:
Object
  • Object
show all
Defined in:
lib/quiver/validator.rb

Constant Summary collapse

VALIDATORS = 
{
  presence: Quiver::Validators::Presence,
  unique: Quiver::Validators::Unique
}.freeze

Instance Method Summary collapse

Constructor Details

#initialize(definitions) ⇒ Validator

Returns a new instance of Validator.



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# File 'lib/quiver/validator.rb', line 14

def initialize(definitions)
  self.definitions = definitions
end

Instance Method Details

#validate(object, options = {}) ⇒ Object 



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# File 'lib/quiver/validator.rb', line 18

def validate(object, options={})
  tags = options[:tags] || []

  error_collections = definitions.map do |definition|
    next unless tags_match?(tags, definition)

    if definition[:options][:if]
      next if !definition[:options][:if].call(object)
    end

    if definition[:options][:unless]
      next if definition[:options][:unless].call(object)
    end

    attr_or_proc = definition[:attr_or_proc]

    validator_options = definition[:options].select do |k, v|
      !%i|except only if unless|.include?(k)
    end

    if attr_or_proc.is_a?(Proc)
      result = attr_or_proc.call(object)

      unless result.is_a?(Quiver::ErrorCollection)
        raise TypeError, 'proc validators must return a Quiver::ErrorCollection'
      end

      result
    else
      value = object.public_send(attr_or_proc)

      results = validator_options.map do |k, v|
        validator_klass = VALIDATORS[k] || next
        validator = validator_klass.new(
          value, v, attr_or_proc, options[:mapper], options[:model]
        )

        validator.validate
      end

      results.compact.reduce(:+)
    end
  end

  error_collections.compact.reduce(:+) || Quiver::ErrorCollection.new
end