BP_XProfile_Field::admin_validate()

	public static function admin_validate() {
		global $message;

		// Check field name.
		if ( ! isset( $_POST['title'] ) || ( '' === $_POST['title'] ) ) {
			$message = esc_html__( 'Profile fields must have a name.', 'buddyboss' );

			return false;
		}

		// Check field requirement.
		if ( ! isset( $_POST['required'] ) ) {
			$message = esc_html__( 'Profile field requirement is missing.', 'buddyboss' );

			return false;
		}

		// Check field type.
		if ( empty( $_POST['fieldtype'] ) ) {
			$message = esc_html__( 'Profile field type is missing.', 'buddyboss' );

			return false;
		}

		// Check that field is of valid type.
		if ( ! in_array( $_POST['fieldtype'], array_keys( bp_xprofile_get_field_types() ), true ) ) {
			$message = sprintf( esc_html__( 'The profile field type %s is not registered.', 'buddyboss' ), '<code>' . esc_attr( $_POST['fieldtype'] ) . '</code>' );

			return false;
		}

		// Get field type so we can check for and lavidate any field options.
		$field_type = bp_xprofile_create_field_type( $_POST['fieldtype'] );

		// Field type requires options.
		if ( true === $field_type->supports_options ) {

			// Build the field option key.
			$option_name = sanitize_key( $_POST['fieldtype'] ) . '_option';

			// Check for missing or malformed options.
			if ( empty( $_POST[ $option_name ] ) || ! is_array( $_POST[ $option_name ] ) ) {
				$message = esc_html__( 'These field options are invalid.', 'buddyboss' );

				return false;
			}

			// Trim out empty field options.
			$field_values  = array_values( $_POST[ $option_name ] );
			$field_options = array_map( 'sanitize_text_field', $field_values );
			$field_count   = count( $field_options );

			// Check for missing or malformed options.
			if ( 0 === $field_count ) {
				$message = sprintf( esc_html__( '%s require at least one option.', 'buddyboss' ), $field_type->name );

				return false;
			}

			// If only one option exists, it cannot be an empty string.
			if ( ( 1 === $field_count ) && ( '' === $field_options[0] ) ) {
				$message = sprintf( esc_html__( '%s require at least one option.', 'buddyboss' ), $field_type->name );

				return false;
			}
		}

		return true;
	}