Module: Isomorfeus::Data::AttributeSupport

Defined in:
lib/isomorfeus/data/attribute_support.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.included(base) ⇒ Object



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# File 'lib/isomorfeus/data/attribute_support.rb', line 4

def self.included(base)
  base.instance_exec do
    def attribute_conditions
      @attribute_conditions ||= {}
    end

    def indexed_attributes
      @indexed_attributes ||= {}
    end

    def valid_attribute?(attr_name, val)
      Isomorfeus::Props::Validator.new(self.name, attr_name, val, attribute_conditions[attr_name]).validate!
    rescue
      false
    end

    def validate
      Isomorfeus::Props::ValidateHashProxy.new
    end

    def _validate_attribute(attr_name, val)
      Isomorfeus.raise_error(message: "#{self.name}: No such attribute declared: '#{attr_name}'!") unless attribute_conditions.key?(attr_name)
      Isomorfeus::Props::Validator.new(self.name, attr_name, val, attribute_conditions[attr_name]).validated_value
    end

    def _validate_attributes(attrs)
      attribute_conditions.each_key do |attr_name|
        if attribute_conditions[attr_name].key?(:required) && attribute_conditions[attr_name][:required] && !attrs.key?(attr_name)
          Isomorfeus.raise_error(message: "Required attribute #{attr_name} not given!")
        end
        attrs[attr_name] = _validate_attribute(attr_name, attrs[attr_name])
      end
    end
  end

  def _validate_attribute(attr_name, val)
    self.class._validate_attribute(attr_name, val)
  end

  def _validate_attributes(attrs)
    self.class._validate_attributes(attrs)
  end

  def exclude_attributes(*attrs)
    @_excluded_attributes = attrs
  end

  def select_attributes(*attrs)
    @_selected_attributes = attrs
  end

  if RUBY_ENGINE == 'opal'
    base.instance_exec do
      def attribute(name, options = {})
        indexed_attributes[name] = options.delete(:index) if options.key?(:index)
        attribute_conditions[name] = options

        define_method(name) do
          _get_attribute(name)
        end

        define_method("#{name}=") do |val|
          val = _validate_attribute(name, val)
          changed!
          @_changed_attributes[name] = val
        end
      end
    end

    def validate_attributes_function
      %x{
        if (typeof self.validate_attributes_function === 'undefined') {
          self.validate_attributes_function = function(attributes_object) {
            try { self.$_validate_attributes(Opal.Hash.$new(attributes_object)) }
            catch (e) { return e.message; }
          }
        }
        return self.validate_attributes_function;
      }
    end

    def validate_attribute_function(attr)
      function_name = "validate_attribute_#{attr}_function"
      %x{
        if (typeof self[function_name] === 'undefined') {
          self[function_name] = function(value) {
            try { self.$_validate_attribute(attribute, value); }
            catch (e) { return e.message; }
          }
        }
        return self[function_name];
      }
    end

    def _get_attribute(name)
      return @_changed_attributes[name] if @_changed_attributes.key?(name)
      path = @_store_path + [name]
      result = Redux.fetch_by_path(*path)
      %x{
        if (result === null) { return nil; }
        else if (result instanceof Object && !(result instanceof Array)) {
          return Opal.Hash.$new(result);
        } else { return result; }
      }
    end

    def attributes
      raw_attributes = Redux.fetch_by_path(*@_store_path)
      hash = Hash.new(raw_attributes)
      hash.merge!(@_changed_attributes) if @_changed_attributes
      hash
    end

    def _get_selected_attributes
      sel_attributes = attributes.dup
      if @_selected_attributes && !@_selected_attributes.empty?
        sel_attributes.each_key do |attr|
          unless @_selected_attributes.include?(attr) || @_selected_attributes.include?(attr)
            sel_attributes.delete(attr)
          end
        end
      end
      if @_excluded_attributes && !@_excluded_attributes.empty?
        @_excluded_attributes.each { |attr| sel_attributes.delete(attr) }
      end
      sel_attributes
    end
  else
    base.instance_exec do
      def attribute(name, options = {})
        indexed_attributes[name] = options.delete(:index) if options.key?(:index)
        attribute_conditions[name] = options

        define_method(name) do
          @_raw_attributes[name]
        end

        define_method("#{name}=") do |val|
          val = _validate_attribute(name, val)
          changed!
          @_raw_attributes[name] = val
        end
      end
    end

    def attributes
      @_raw_attributes
    end

    def _get_selected_attributes
      sel_attributes = attributes.transform_keys(&:to_s)
      self.class.attribute_conditions.each do |attr, options|
        sel_attributes.delete(attr.to_s) if options[:server_only]
      end
      if @_selected_attributes && !@_selected_attributes.empty?
        sel_attributes.each_key do |attr|
          unless @_selected_attributes.include?(attr.to_sym) || @_selected_attributes.include?(attr)
            sel_attributes.delete(attr)
          end
        end
      end
      if @_excluded_attributes && !@_excluded_attributes.empty?
        @_excluded_attributes.each { |attr| sel_attributes.delete(attr.to_s) }
      end
      sel_attributes
    end
  end
end

Instance Method Details

#_validate_attribute(attr_name, val) ⇒ Object



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# File 'lib/isomorfeus/data/attribute_support.rb', line 39

def _validate_attribute(attr_name, val)
  self.class._validate_attribute(attr_name, val)
end

#_validate_attributes(attrs) ⇒ Object



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# File 'lib/isomorfeus/data/attribute_support.rb', line 43

def _validate_attributes(attrs)
  self.class._validate_attributes(attrs)
end

#exclude_attributes(*attrs) ⇒ Object



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# File 'lib/isomorfeus/data/attribute_support.rb', line 47

def exclude_attributes(*attrs)
  @_excluded_attributes = attrs
end

#select_attributes(*attrs) ⇒ Object



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# File 'lib/isomorfeus/data/attribute_support.rb', line 51

def select_attributes(*attrs)
  @_selected_attributes = attrs
end