Class: Mutations::ModelFilter

Inherits:
InputFilter show all
Defined in:
lib/mutations/model_filter.rb

Instance Attribute Summary

Attributes inherited from InputFilter

#options

Instance Method Summary collapse

Methods inherited from InputFilter

#default, default_options, #discard_empty?, #discard_invalid?, #discard_nils?, #has_default?

Constructor Details

#initialize(name, opts = {}) ⇒ ModelFilter

Returns a new instance of ModelFilter.



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# File 'lib/mutations/model_filter.rb', line 10

def initialize(name, opts = {})
  super(opts)
  @name = name
end

Instance Method Details

#filter(data) ⇒ Object 



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# File 'lib/mutations/model_filter.rb', line 35

def filter(data)
  initialize_constants!

  # Handle nil case
  if data.nil?
    return [nil, nil] if options[:nils]
    return [nil, :nils]
  end

  # Passing in attributes.  Let's see if we have a builder
  if data.is_a?(Hash) && options[:builder]
    ret = options[:builder].run(data)

    if ret.success?
      data = ret.result
    else
      return [data, ret.errors]
    end
  end

  # We have a winner, someone passed in the correct data type!
  if data.is_a?(options[:class])
    return [data, :new_records] if !options[:new_records] && (data.respond_to?(:new_record?) && data.new_record?)
    return [data, nil]
  end

  return [data, :model]
end

#initialize_constants! ⇒ Object

Initialize the model class and builder



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# File 'lib/mutations/model_filter.rb', line 16

def initialize_constants!
  @initialize_constants ||= begin
    class_const = options[:class] || @name.to_s.camelize
    class_const = class_const.constantize if class_const.is_a?(String)
    options[:class] = class_const

    if options[:builder]
      options[:builder] = options[:builder].constantize if options[:builder].is_a?(String)
    end

    true
  end
  
  unless Mutations.cache_constants?
    options[:class] = options[:class].to_s.constantize if options[:class]
    options[:builder] = options[:builder].to_s.constantize if options[:builder]
  end
end