this->is_blocks() ) {
					$result['options'][] = array(
						'value' => '',
						'label' => $field['placeholder']
					);
				} else {
					$result['options'][''] = $field['placeholder'];
				}
			}

			foreach ( $options as $index => $option ) {

				if ( ! isset( $option['key'] ) || ! is_array( $option ) ) {
					$key   = $index;
					$value = $option;
				} else {
					$key   = $option['key'];
					$value = $option['value'];
				}

				/*
				Looks like this code not needed anymore, but keep commented just in case
				if ( $multiple && empty( $option['key'] ) ) {
					continue;
				}
				*/

				$key   = apply_filters( 'jet-engine/compatibility/translate-string', $key );
				$value = apply_filters( 'jet-engine/compatibility/translate-string', $value );

				if ( $this->is_blocks() ) {
					$result['options'][] = array(
						'value' => $key,
						'label' => $value
					);
				} else {
					$result['options'][ $key ] = $value;
				}

				if ( ! empty( $option['is_checked'] ) ) {
					if ( $multiple ) {
						if ( 'checkbox' === $field['type'] && ! $check_is_array ) {
							$result['default'][ $key ] = 'true';
						} else {
							$result['default'][] = $key;
						}
					} else {
						$result['default'] = $key;
					}
				}

			}

			return $result;

		}

		/**
		 * Prepare field conditions.
		 *
		 * @param  array $field
		 * @param  array $all_fields
		 * @return array
		 */
		public function prepare_field_conditions( $field = array(), $all_fields = array() ) {
			$result = array();

			if ( empty( $field['conditions'] ) ) {
				return $result;
			}

			$result['__relation__'] = ! empty( $field['conditional_relation'] ) ? $field['conditional_relation'] : 'AND';
			$result['__terms__']    = array();

			foreach ( $field['conditions'] as $condition ) {

				if ( empty( $condition['field'] ) || empty( $condition['operator'] ) ) {
					continue;
				}

				$condition_field = $this->get_field_args_by_name( $condition['field'], $all_fields );

				if ( empty( $condition_field['type'] ) ) {
					continue;
				}

				switch( $condition_field['type'] ) {
					case 'switcher':
						$value = ! empty( $condition['value'] ) ? $condition['value'] : false;
						$value = filter_var( $value, FILTER_VALIDATE_BOOLEAN );
						break;

					case 'checkbox':
					case 'checkbox-raw':
					case 'radio':
					case 'select':

						if ( in_array( $condition['operator'], array( 'in', 'not_in' ) ) ) {
							$value = ! empty( $condition['values'] ) ? $condition['values'] : array();
						} else {
							$value = ! empty( $condition['value'] ) ? $condition['value'] : '';
						}

						break;

					default:

						$value = ! empty( $condition['value'] ) ? $condition['value'] : '';

						if ( in_array( $condition['operator'], array( 'in', 'not_in' ) ) ) {
							$value = explode( ',', $value );
							$value = array_map( 'trim', $value );
						}
				}

				if ( in_array( $condition['operator'], array( 'empty', '!empty' ) ) ) {
					$value = '';
				}

				$is_checkbox     = ( 'checkbox' === $condition_field['type'] );
				$is_multi_select = ( 'select' === $condition_field['type'] )
									&& ! empty( $condition_field['is_multiple'] )
									&& filter_var( $condition_field['is_multiple'], FILTER_VALIDATE_BOOLEAN );

				switch( $condition['operator'] ) {
					case 'equal':
						$operator = '==';

						if ( $is_checkbox || $is_multi_select ) {
							$operator = 'contains';
						}

						break;

					case 'not_equal':
						$operator = '!=';

						if ( $is_checkbox || $is_multi_select ) {
							$operator = '!contains';
						}

						break;

					case 'in':
						$operator = 'in';

						if ( $is_checkbox || $is_multi_select ) {
							$operator = 'intersect';
						}

						break;

					case 'not_in':
						$operator = '!in';

						if ( $is_checkbox || $is_multi_select ) {
							$operator = '!intersect';
						}

						break;

					case 'greater_than':
						$operator = '>';

						break;

					case 'less_than':
						$operator = '<';

						break;

					case 'chars_greater_than':
						$operator = 'length_greater';

						break;

					case 'chars_less_than':
						$operator = 'length_less';

						break;

					default:
						$operator = $condition['operator'];
				}

				$result['__terms__'][] = array(
					'name'     => $condition['field'],
					'operator' => $operator,
					'value'    => $value
				);
			}

			return $result;
		}

		/**
		 * Return filtered options list
		 *
		 * @param  array  $options [description]
		 * @param  array  $field   [description]
		 * @return [type]          [description]
		 */
		public function filter_options_list( $options = array(), $field = array() ) {
			return apply_filters( 'jet-engine/meta-fields/field-options', $options, $field, $this );
		}

		/**
		 * Get field type by name.
		 *
		 * @param  string $name
		 * @return string|null
		 */
		public function get_field_type_by_name( $name ) {

			$list = wp_list_pluck( $this->meta_box, 'type', 'name' );

			return isset( $list[ $name ] ) ? $list[ $name ] : null;
		}

		/**
		 * Get field args by name.
		 *
		 * @param  string $name
		 * @param  array  $fields
		 * @return string|null
		 */
		public function get_field_args_by_name( $name = null, $fields = array() ) {

			$names = wp_list_pluck( $fields, 'name' );
			$list  = array_combine( $names, $fields );

			return isset( $list[ $name ] ) ? $list[ $name ] : null;
		}

	}

}