sunnysideup / silverstripe-contact_list

code/model/ContactCategory.php

<?php

class ContactCategory extends TitleDataObject

This class seems to be duplicated in your project.

PSR1 recommends that each class must be in a namespace of at least one level to avoid collisions.

{
    private static $belongs_many_many = array(

The property $belongs_many_many is not used and could be removed.

        'Contacts' => 'Contact'
    );

    private static $field_labels = array(

The property $field_labels is not used and could be removed.

        'Title' => 'Category'
    );

    private static $summary_fields = array(

The property $summary_fields is not used and could be removed.

        'Title' => 'Category'
    );
    

    private static $singular_name = 'Contact Category';

The property $singular_name is not used and could be removed.

    private static $plural_name = 'Contact Categories';

The property $plural_name is not used and could be removed.

}