anchor.diff:      componentWillMount: function() {
         this.refresh();
       },
  -    updateSelectedStudents: function(students) {
  -      this.setState({
  -        selected_students: students
  -      });
  +    updateSelectedStudentsz: function(students) {
  +      this.setState({selected_students: students});
       },
       updateSelectedGroups: function(groups) {
  -      this.setState({
  -        selected_groups: groups
  -      });
  +      this.setState({selected_groups: groups});
       },
       updateSelectedStudentsInGroups: function(students) {
  -      this.setState({
  -        selected_students_in_groups: students
  -      });
  +      this.setState({selected_students_in_groups: students});
       },
       // Sends a request to the server to perform some action
       // such as assigning or removing a member to/from a group
  
positive.code:           <Error error={this.state.error} />
            <GroupsStudentsTable students={this.state.students}
              selected_students={this.state.selected_students}
              onSelectedStudentsChange={this.updateSelectedStudents}/>
            <GroupsActionsColumn refresh={this.refresh} performAction={this.performAction} />
            <GroupsTable groups={this.state.groups} 
              selected_groups={this.state.selected_groups}
  
negative.code:             <Table data={students_data}
              columns={columns}
              filters={filters}
              selectable={true}
              onSelectedRowsChange={this.updateSelectedStudents}
              search_placeholder={'<%= j raw I18n.t('students.search_students') %>'} />
            </div>
          </div>
  