Class: ForestLiana::ResourceDeserializer

Inherits:
Object
  • Object
show all
Defined in:
app/deserializers/forest_liana/resource_deserializer.rb

Instance Method Summary collapse

Constructor Details

#initialize(resource, params) ⇒ ResourceDeserializer

Returns a new instance of ResourceDeserializer.



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# File 'app/deserializers/forest_liana/resource_deserializer.rb', line 6

def initialize(resource, params)
  @params = params.permit! if params.respond_to?(:permit!)
  @resource = resource
end

Instance Method Details

#acts_as_taggable_attribute?(attr) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'app/deserializers/forest_liana/resource_deserializer.rb', line 99

def acts_as_taggable_attribute?(attr)
  @resource.acts_as_taggable.to_a.include?(attr)
end

#carrierwave_attribute?(attr) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'app/deserializers/forest_liana/resource_deserializer.rb', line 95

def carrierwave_attribute?(attr)
  @resource.uploaders.include?(attr.try(:to_sym))
end

#column?(attribute) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'app/deserializers/forest_liana/resource_deserializer.rb', line 91

def column?(attribute)
  @resource.columns.find {|x| x.name == attribute}.present?
end

#extract_acts_as_taggable ⇒ Object 



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# File 'app/deserializers/forest_liana/resource_deserializer.rb', line 70

def extract_acts_as_taggable
  return unless has_acts_as_taggable?

  @params['data']['attributes'].each do |key, value|
    if acts_as_taggable_attribute?(key)
      @attributes["#{key.singularize}_list"] = value
      @attributes.delete(key)
    end
  end

end

#extract_attributes ⇒ Object 



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# File 'app/deserializers/forest_liana/resource_deserializer.rb', line 21

def extract_attributes
  if @params[:data][:attributes]
    @params['data']['attributes'].select {|attr| column?(attr)}
  else
    ActionController::Parameters.new()
  end
end

#extract_carrierwave ⇒ Object 



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# File 'app/deserializers/forest_liana/resource_deserializer.rb', line 60

def extract_carrierwave
  return unless @resource.respond_to?(:uploaders)

  @params['data']['attributes'].each do |key, value|
    if value && carrierwave_attribute?(key)
      @attributes[key] = ForestLiana::Base64StringIO.new(value)
    end
  end
end

#extract_paperclip ⇒ Object 



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# File 'app/deserializers/forest_liana/resource_deserializer.rb', line 48

def extract_paperclip
  return unless @resource.respond_to?(:attachment_definitions)

  paperclip_attr = @params['data']['attributes']
    .select do |attr|
      !column?(attr) &&
        paperclip_handler?(@params['data']['attributes'][attr])
    end

  @attributes.merge!(paperclip_attr) if paperclip_attr
end

#extract_relationships ⇒ Object 



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# File 'app/deserializers/forest_liana/resource_deserializer.rb', line 29

def extract_relationships
  if @params['data']['relationships']
    @params['data']['relationships'].each do |name, relationship|
      data = relationship['data']
      # Rails 3 requires a :sym argument for the reflect_on_association
      # call.
      association = @resource.reflect_on_association(name.try(:to_sym))

      if [:has_one, :belongs_to].include?(association.try(:macro))
        if data.is_a?(Hash) && data[:id]
          @attributes[name] = association.klass.find(data[:id])
        elsif data.blank?
          @attributes[name] = nil
        end
      end
    end
  end
end

#has_acts_as_taggable? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'app/deserializers/forest_liana/resource_deserializer.rb', line 103

def has_acts_as_taggable?
  @resource.respond_to?(:acts_as_taggable) &&
    @resource.acts_as_taggable.try(:to_a)
end

#paperclip_handler?(attr) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'app/deserializers/forest_liana/resource_deserializer.rb', line 82

def paperclip_handler?(attr)
  begin
    Paperclip.io_adapters.handler_for(attr)
    true
  rescue Paperclip::AdapterRegistry::NoHandlerError
    false
  end
end

#perform ⇒ Object 



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# File 'app/deserializers/forest_liana/resource_deserializer.rb', line 11

def perform
  @attributes = extract_attributes
  extract_relationships
  extract_paperclip
  extract_carrierwave
  extract_acts_as_taggable

  @attributes
end