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, with_relationships) ⇒ 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, with_relationships)
  @params = params.permit! if params.respond_to?(:permit!)
  @resource = resource
  @with_relationships = with_relationships
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 172

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

#attributes_serialized ⇒ Object 



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# File 'app/deserializers/forest_liana/resource_deserializer.rb', line 153

def attributes_serialized
  if Rails::VERSION::MAJOR >= 5
    @attributes.select do |attribute|
      @resource.type_for_attribute(attribute).class ==
        ::ActiveRecord::Type::Serialized
    end
  else
    # NOTICE: Silent deprecation warnings for removed
    #         "serialized_attributes" in Rails 5
    ActiveSupport::Deprecation.silence do
      @resource.serialized_attributes
    end
  end
end

#carrierwave_attribute?(attr) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'app/deserializers/forest_liana/resource_deserializer.rb', line 168

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 149

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

#extract_acts_as_taggable ⇒ Object 



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# File 'app/deserializers/forest_liana/resource_deserializer.rb', line 116

def extract_acts_as_taggable
  return if @params['data']['attributes'].blank?
  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 24

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

#extract_attributes_serialize ⇒ Object 



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# File 'app/deserializers/forest_liana/resource_deserializer.rb', line 32

def extract_attributes_serialize
  attributes_serialized.each do |attribute, serializer|
    value = @params[:data][:attributes][attribute]
    begin
      if @attributes.has_key?(attribute)
        @attributes[attribute] = value.nil? ? nil : JSON::parse(value)
      end
    rescue
      message = "Bad format for '#{attribute}' attribute value."
      raise ForestLiana::Errors::SerializeAttributeBadFormat.new(message)
    end
  end
end

#extract_carrierwave ⇒ Object 



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# File 'app/deserializers/forest_liana/resource_deserializer.rb', line 101

def extract_carrierwave
  return if @params['data']['attributes'].blank?
  return unless @resource.respond_to?(:uploaders)

  @params['data']['attributes'].each do |key, value|
    if value && carrierwave_attribute?(key)
      if value.match(/\Adata:\w+\/.+;base64,.+/)
        @attributes[key] = ForestLiana::Base64StringIO.new(value)
      else
        @attributes.delete(key)
      end
    end
  end
end

#extract_paperclip ⇒ Object 



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# File 'app/deserializers/forest_liana/resource_deserializer.rb', line 77

def extract_paperclip
  return if @params['data']['attributes'].blank?
  return unless @resource.respond_to?(:attachment_definitions)

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

  if paperclip_attr
    # NOTICE: Force to set the file_name attribute to support
    #         validates_attachment_file_name option
    array_keys = paperclip_attr.keys
    array_keys.each do |key|
      extension = /\Adata:image\/([a-z]+);base64/.match(paperclip_attr[key])
        .try(:[], 1)
      paperclip_attr["#{key}_file_name"] = "image.#{extension}"
    end

    @attributes.merge!(paperclip_attr)
  end
end

#extract_relationships ⇒ Object 



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# File 'app/deserializers/forest_liana/resource_deserializer.rb', line 46

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))
        # TODO: refactor like this?
        #if data.blank?
          #@attributes[name] = nil
        #else
          #@attributes[name] = association.klass.find(data[:id])
        #end

        # ActionController::Parameters do not inherit from Hash anymore
        # since Rails 5.
        if (data.is_a?(Hash) || data.is_a?(ActionController::Parameters)) && data[:id]
          @attributes[name] = association.klass.find(data[:id])
        elsif data.blank?
          @attributes[name] = nil
        end
      end
    end

    # Strong parameter permit all new relationships attributes.
    @attributes = @attributes.permit! if @attributes.respond_to?(:permit!)
  end
end

#extract_smart_fields_values ⇒ Object 



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# File 'app/deserializers/forest_liana/resource_deserializer.rb', line 128

def extract_smart_fields_values
  # NOTICE: Look for some Smart Field setters and apply them if any.
  ForestLiana.schema_for_resource(@resource).fields.each do |field|
    if field.try(:[], :set) &&
      @params['data']['attributes'].has_key?(field[:field])
      # WARNING: The Smart Fields setters may override other changes.
      @attributes = field[:set].call(@attributes,
        @params['data']['attributes'][field[:field]])
    end
  end
end

#has_acts_as_taggable? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'app/deserializers/forest_liana/resource_deserializer.rb', line 176

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

#paperclip_handler?(attr) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'app/deserializers/forest_liana/resource_deserializer.rb', line 140

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 12

def perform
  @attributes = extract_attributes
  extract_attributes_serialize
  extract_relationships if @with_relationships
  extract_paperclip
  extract_carrierwave
  extract_acts_as_taggable
  extract_smart_fields_values

  @attributes
end