gistfile1.php

    public function getMap()
    {
        return [
            self::FIELD__ID => [
                'getter' => 'getId',
                'setter' => 'setId',
                'role' =>  [
                    self::ROLE__PRIMARY_KEY  => true,
                    self::ROLE__GENERATE_KEY => true,
                ],
                'name' => 'Id',
                'description' => 'Contract ID',
                'type' => 'string',
                'formType' => 'text',
                'validator' =>  [
                    [
                        'type' => 'type.check',
                        'data' => [
                            'type' => 'string'
                        ]
                    ],
                    [
                        'type' => 'string.byRegex',
                        'data' => [
                            'pattern' => '/^[0-9a-f]{32}$/i'
                        ]
                    ]
                ],
                'options' =>  [
                    'required' => false,
                    'unique'   => true,
                ],
            ],
            self::FIELD__PARENT_CONTRACT => [
                'getter' => 'getParentContractId',
                'setter' => 'setParentContractId',
                'name' => 'Parent contract',
                'description' => 'Parent contract',
                'type' => 'string',
                'formType' => 'select',
                'validator' =>  [
                    [
                        'type' => 'type.check',
                        'data' => [
                            'type' => 'string'
                        ]
                    ],
                    [
                        'type' => 'string.byRegex',
                        'data' => [
                            'pattern' => '/^[0-9a-f]{32}$/i'
                        ]
                    ]
                ],
                'relations' =>  [
                    'parentContract' => [
                        'getter' => 'getParentContract',
                        'setter' => 'setParentContract',
                        'type'   => self::RELATION__ONE_TO_ONE,
                        'mapper' => contractMapper::class,
                    ]
                ],
                'options' =>  [
                    'required' => false,
                    'unique'   => false,
                ],
            ],
            self::FIELD__NUMBER => [
                'getter' => 'getNumber',
                'setter' => 'setNumber',
                'role' =>  [
                    self::ROLE__TITLE       => true,
                    self::ROLE__SEARCHABLE  => true,
                    self::ROLE__SORTABLE    => true,
                    self::ROLE__QUERY_FIELD => true,
                ],
                'name' => 'Number',
                'description' => 'Contract number',
                'type' => 'string',
                'formType' => 'text',
                'validator' =>  [
                    [
                        'type' => 'type.check',
                        'data' => [
                            'type' => 'string'
                        ]
                    ]
                ],
                'options' =>  [
                    'required' => true,
                    'unique' => true,
                ],
            ],
        ];
    }