WPMU M2 add more sortable bp xprofile column in all members table

code.php

<?php

/**
  * Set BP xProfile fields in line 16: $this->_bp_fields = array( 'Gender', 'Gwint', 'True Color' );
  */

if( ! class_exists( 'Make_M2_Member_Column_Sortable_BP' ) )
{
        class Make_M2_Member_Column_Sortable_BP
        {
                private $_bp_fields = array();

                private function __construct()
                {
                        // Here to set BP xprofile fields
                        $this->_bp_fields = array('Gender', 'Gwint', 'True Color' );
						
                        add_filter( 'ms_helper_listtable_member_get_columns', array( $this, 'ms_helper_listtable_member_get_columns' ) );
                        add_filter( 'ms_helper_listtable_member_default_value', array( $this, 'ms_helper_listtable_member_default_value' ), 10, 3 );
                        add_filter( 'ms_helper_listtable_member_get_sortable_columns', array( $this, 'ms_helper_listtable_member_get_sortable_columns' ) );
                        add_filter( 'ms_model_member_get_members', array( $this, 'ms_model_member_get_members' ), 10, 3 );
                }

                static public function get_instance()
                {
                        static $Inst = null;
                        if( null == $Inst )
                        {
                                $Inst = new self();
                        }
                }

                public function set_sorting_val( $members, $var )
                {
                        if( ! function_exists( 'bp_get_profile_field_data' ) ) return $members;

                        foreach( $members as $key => $member )
                        {
                                $members[$key]->_saved_data[$var] = bp_get_profile_field_data( array( 'field' => $var, 'user_id' => $member->id ) );
                        }
                        return $members;
                }

                public function ms_helper_listtable_member_get_columns( $columns )
                {
                        foreach( $this->_bp_fields as $field )
                        {
                                $columns[ strtolower( $field ) ] = $field;
                        }
						$columns = array('avatar'=>'Avatar') + $columns;

                        return $columns;
                }

                public function ms_helper_listtable_member_default_value( $html, $member, $column_name )
                {
                        $user_id = $member->id; //get member user ID;
                        $args = array(
                                'field' => $column_name,
                                'user_id' => $member->id
                        );
						if ($column_name == 'avatar') 
							return get_avatar($member->id, 64);	
						else 
							return function_exists( 'bp_get_profile_field_data' ) ? bp_get_profile_field_data( $args ) : $html;
						
					    
                }

                public function ms_helper_listtable_member_get_sortable_columns( $columns )
                {
                        /* Making the membership column sortable */
                        $columns['membership'] = array('membership', false);
						$columns['username'] = array('username', false);
						$columns['e-mail'] = array('e-mail', false);

                        foreach( $this->_bp_fields as $field )
                        {
                                $columns[ strtolower( $field ) ] = array( strtolower( $field ), false );
                        }

                        return $columns;
                }

                public function ms_model_member_get_members( $members, $ids, $args )
                {
                        $bp_fields = array_map( 'strtolower', $this->_bp_fields );

                        if( in_array( $args['orderby'], $bp_fields ) )
                        {
                                $members = $this->set_sorting_val( $members, $args['orderby'] );

                                $key = $args['orderby'];
                                $order = $args['order'];

                                usort( $members, function( $a, $b ) use( $key, $order ) {
                                        return $order == 'asc' ? strcmp( $a->_saved_data[$key], $b->_saved_data[$key] ) : strcmp( $b->_saved_data[$key], $a->_saved_data[$key] );
                                } );
                        }

                        return $members;
                }
        }

        Make_M2_Member_Column_Sortable_BP::get_instance();
}