Uniqueness Rules

Overview

The Uniqueness validation rules provide specialized validation for many-to-many relationships, bulk operations, and composite uniqueness constraints. These rules handle complex scenarios that Laravel’s built-in unique rule cannot address.

UniqueInPivot

Validates that a column value is unique within the scope of a many-to-many relationship by checking through a pivot table. Designed for single operations (create/update).

Constructor Parameters

string

required

Database connection name

string

required

Main table containing the column to validate (e.g., 'addresses')

string

required

Pivot table that links main table to owner (e.g., 'user_addresses')

string

required

Foreign key in pivot table pointing to main table (e.g., 'address_id')

string

required

Foreign key in pivot table pointing to owner (e.g., 'user_id')

mixed

required

Owner ID value (e.g., auth()->id())

string

required

Column in main table to check for uniqueness (e.g., 'phone')

string

default:"id"

Primary key of main table

mixed

default:"null"

Primary key value to ignore (for updates: $this->route('id'))

Create Example

use Ronu\RestGenericClass\Core\Rules\UniqueInPivot;

// Scenario: User 42 is creating a new address
// Rule: Phone must be unique among user 42's addresses

public function rules(): array
{
    return [
        'phone' => [
            'nullable',
            'string',
            'max:64',
            new UniqueInPivot(
                connection: config('database.default'),
                mainTable: 'addresses',
                pivotTable: 'user_addresses',
                pivotForeignKey: 'address_id',
                pivotOwnerKey: 'user_id',
                ownerValue: auth()->id(),  // 42
                column: 'phone',
                // ignoreValue omitted - this is a create
            ),
        ],
    ];
}

SQL Executed:

SELECT EXISTS(
    SELECT 1 FROM addresses AS _main
    INNER JOIN user_addresses AS _pivot
        ON _pivot.address_id = _main.id
    WHERE _main.phone = '+1-555-0001'
      AND _pivot.user_id = 42
)

Update Example

// Scenario: User 42 is updating address ID 7
// Rule: Phone must be unique among user 42's addresses, except for address 7 itself

public function rules(): array
{
    return [
        'phone' => [
            'nullable',
            'string',
            'max:64',
            new UniqueInPivot(
                connection: config('database.default'),
                mainTable: 'addresses',
                pivotTable: 'user_addresses',
                pivotForeignKey: 'address_id',
                pivotOwnerKey: 'user_id',
                ownerValue: auth()->id(),      // 42
                column: 'phone',
                ignoreValue: $this->route('id'), // 7
            ),
        ],
    ];
}

SQL Executed:

SELECT EXISTS(
    SELECT 1 FROM addresses AS _main
    INNER JOIN user_addresses AS _pivot
        ON _pivot.address_id = _main.id
    WHERE _main.phone = '+1-555-0001'
      AND _pivot.user_id = 42
      AND _main.id != 7  -- Ignore own record
)

Schema Support

// PostgreSQL with schema
new UniqueInPivot(
    connection: 'pgsql',
    mainTable: 'security.addresses',      // Schema prefix
    pivotTable: 'security.user_addresses',
    pivotForeignKey: 'address_id',
    pivotOwnerKey: 'user_id',
    ownerValue: auth()->id(),
    column: 'phone',
)

UniqueInPivotArray

Validates column uniqueness within a many-to-many relationship for bulk (array) operations. Checks both intra-array duplicates and database conflicts.

Constructor Parameters

string

required

Database connection name

string

required

Main table containing the column to validate

string

required

Pivot table that links main table to owner

string

required

Foreign key in pivot table pointing to main table

string

required

Foreign key in pivot table pointing to owner

mixed

required

Owner ID value

string

required

Column to check for uniqueness

string

required

Root array key in request data (e.g., 'addresses')

string

default:"id"

Primary key of main table

string|null

default:"null"

Field containing primary key to ignore (for updates: 'id')

Bulk Create Example

use Ronu\RestGenericClass\Core\Rules\UniqueInPivotArray;

// Scenario: User 42 is creating multiple addresses at once
// Rule: Each phone must be unique among user 42's existing addresses
//       AND unique within the request itself

public function rules(): array
{
    return [
        'addresses' => ['required', 'array'],
        'addresses.*.phone' => [
            'nullable',
            'string',
            'max:64',
            new UniqueInPivotArray(
                connection: config('database.default'),
                mainTable: 'addresses',
                pivotTable: 'user_addresses',
                pivotForeignKey: 'address_id',
                pivotOwnerKey: 'user_id',
                ownerValue: auth()->id(),
                column: 'phone',
                arrayKey: 'addresses',
                // ignoreField omitted - this is a create
            ),
        ],
    ];
}

Request:

{
  "addresses": [
    { "phone": "+1-555-8888", "city": "Miami" },
    { "phone": "+1-555-8888", "city": "NYC" }
  ]
}

Error:

{
  "errors": {
    "addresses.0.phone": [
      "The phone '+1-555-8888' is duplicated in the request at addresses[0]."
    ],
    "addresses.1.phone": [
      "The phone '+1-555-8888' is duplicated in the request at addresses[1]."
    ]
  }
}

Bulk Update Example

// Scenario: User 42 is updating multiple addresses
// Each address can keep its own phone, but can't take another address's phone

public function rules(): array
{
    return [
        'addresses' => ['required', 'array'],
        'addresses.*.id' => ['required', 'integer'],
        'addresses.*.phone' => [
            'nullable',
            'string',
            'max:64',
            new UniqueInPivotArray(
                connection: config('database.default'),
                mainTable: 'addresses',
                pivotTable: 'user_addresses',
                pivotForeignKey: 'address_id',
                pivotOwnerKey: 'user_id',
                ownerValue: auth()->id(),
                column: 'phone',
                arrayKey: 'addresses',
                ignoreField: 'id',  // Ignore each item's own ID
            ),
        ],
    ];
}

Valid Request:

{
  "addresses": [
    { "id": 7, "phone": "+1-555-0001", "city": "Miami" },
    { "id": 9, "phone": "+1-555-0099", "city": "Chicago" }
  ]
}

Invalid Request:

{
  "addresses": [
    { "id": 7, "phone": "+1-555-0001", "city": "Miami" },
    { "id": 9, "phone": "+1-555-0001", "city": "Chicago" }
  ]
}

Error:

{
  "errors": {
    "addresses.0.phone": [
      "The phone '+1-555-0001' is duplicated in the request at addresses[0]."
    ]
  }
}

UniqueCompositeInArray

Validates uniqueness of a column in a database table for bulk operations, supporting composite conditions. Simpler than UniqueInPivotArray when pivot tables aren’t involved.

Constructor Parameters

string

required

Database connection name

string

required

Table name to check

string

required

Column to check for uniqueness

string

required

Root array key in request data

array

default:"[]"

Additional WHERE conditions (composite key)

string|null

default:"null"

Field containing primary key to ignore (for updates)

Bulk Create Example

use Ronu\RestGenericClass\Core\Rules\UniqueCompositeInArray;

// Scenario: Creating multiple states within a country
// Rule: State name must be unique within that country

public function rules(): array
{
    return [
        'states' => ['required', 'array'],
        'states.*.name' => [
            'required',
            'string',
            'max:255',
            new UniqueCompositeInArray(
                connection: config('database.default'),
                table: 'states',
                column: 'name',
                arrayKey: 'states',
                conditions: [
                    'country_id' => $this->country_id,
                ],
            ),
        ],
    ];
}

Request:

{
  "country_id": 1,
  "states": [
    { "name": "California", "code": "CA" },
    { "name": "Texas", "code": "TX" }
  ]
}

Bulk Update Example

// Allow updating state names while checking uniqueness

public function rules(): array
{
    return [
        'states' => ['required', 'array'],
        'states.*.id' => ['required', 'integer'],
        'states.*.name' => [
            'required',
            'string',
            'max:255',
            new UniqueCompositeInArray(
                connection: config('database.default'),
                table: 'states',
                column: 'name',
                arrayKey: 'states',
                conditions: [
                    'country_id' => $this->country_id,
                ],
                ignoreField: 'id',  // Ignore each state's own ID
            ),
        ],
    ];
}

Multi-Tenant Example

// Ensure product SKUs are unique per organization

public function rules(): array
{
    return [
        'products' => ['required', 'array'],
        'products.*.sku' => [
            'required',
            'string',
            new UniqueCompositeInArray(
                connection: config('database.default'),
                table: 'products',
                column: 'sku',
                arrayKey: 'products',
                conditions: [
                    'organization_id' => auth()->user()->organization_id,
                    'deleted_at' => null,
                ],
            ),
        ],
    ];
}

ArrayCount

Validates that an array contains between min and max elements, with support for custom messages and token replacement.

Constructor Parameters

int|null

default:"null"

Minimum number of items (inclusive)

int|null

default:"null"

Maximum number of items (inclusive)

string|null

default:"null"

Single custom message for all failure scenarios

array

default:"[]"

Per-scenario messages: onMin, onMax, onBetween, onExact, onNotArray

Basic Usage

use Ronu\RestGenericClass\Core\Rules\ArrayCount;

'tags' => [
    'required',
    'array',
    new ArrayCount(min: 1, max: 10),
],

Custom Global Message

'addresses' => [
    'required',
    'array',
    new ArrayCount(
        max: 1,
        message: 'Only one address is allowed.'
    ),
],

Per-Scenario Messages

'attendees' => [
    'required',
    'array',
    new ArrayCount(
        min: 2,
        max: 50,
        messages: [
            'onMin' => 'Please add at least :min attendees.',
            'onMax' => 'You can add at most :max attendees.',
            'onBetween' => 'Number of attendees must be between :min and :max.',
        ]
    ),
],

Token Replacement

Available tokens:

:attribute - Field name (e.g., “addresses”)
:min - Minimum value
:max - Maximum value
:count - Actual count provided

'items' => [
    'required',
    'array',
    new ArrayCount(
        min: 1,
        max: 100,
        messages: [
            'onMax' => 'You provided :count items, but the maximum is :max.',
        ]
    ),
],

Exact Count

'options' => [
    'required',
    'array',
    new ArrayCount(
        min: 3,
        max: 3,  // Exactly 3 items
        messages: [
            'onExact' => 'Exactly :min options are required.',
        ]
    ),
],

Only Minimum

'categories' => [
    'required',
    'array',
    new ArrayCount(min: 1),
],

Only Maximum

'attachments' => [
    'required',
    'array',
    new ArrayCount(max: 5),
],

Complete Example

namespace App\Http\Requests;

use Illuminate\Foundation\Http\FormRequest;
use Ronu\RestGenericClass\Core\Rules\UniqueInPivotArray;
use Ronu\RestGenericClass\Core\Rules\UniqueCompositeInArray;
use Ronu\RestGenericClass\Core\Rules\ArrayCount;
use Ronu\RestGenericClass\Core\Rules\IdsExistNotDelete;

class BulkUpdateUserAddressesRequest extends FormRequest
{
    protected string $connection;

    public function __construct()
    {
        parent::__construct();
        $this->connection = config('database.default');
    }

    public function authorize(): bool
    {
        return true;
    }

    public function rules(): array
    {
        return [
            // Array size validation
            'addresses' => [
                'required',
                'array',
                new ArrayCount(
                    min: 1,
                    max: 10,
                    messages: [
                        'onMin' => 'At least one address is required.',
                        'onMax' => 'You can update a maximum of 10 addresses at once.',
                    ]
                ),
            ],

            // Address IDs must exist and not be deleted
            'addresses.*.id' => [
                'required',
                'integer',
                new IdsExistNotDelete(
                    connection: $this->connection,
                    table: 'addresses',
                    column: 'id'
                ),
            ],

            // Phone must be unique within user's addresses (via pivot)
            'addresses.*.phone' => [
                'nullable',
                'string',
                'max:64',
                new UniqueInPivotArray(
                    connection: $this->connection,
                    mainTable: 'addresses',
                    pivotTable: 'user_addresses',
                    pivotForeignKey: 'address_id',
                    pivotOwnerKey: 'user_id',
                    ownerValue: auth()->id(),
                    column: 'phone',
                    arrayKey: 'addresses',
                    ignoreField: 'id'
                ),
            ],

            // Label must be unique for this user (direct table check)
            'addresses.*.label' => [
                'required',
                'string',
                'max:50',
                new UniqueCompositeInArray(
                    connection: $this->connection,
                    table: 'addresses',
                    column: 'label',
                    arrayKey: 'addresses',
                    conditions: [
                        'user_id' => auth()->id(),
                    ],
                    ignoreField: 'id'
                ),
            ],
        ];
    }
}

Core Classes

Traits

Middleware

Validation Rules

Helpers

Overview

UniqueInPivot

Constructor Parameters

Create Example

Update Example

Schema Support

UniqueInPivotArray

Constructor Parameters

Bulk Create Example

Bulk Update Example

UniqueCompositeInArray

Constructor Parameters

Bulk Create Example

Bulk Update Example

Multi-Tenant Example

ArrayCount

Constructor Parameters

Basic Usage

Custom Global Message

Per-Scenario Messages

Token Replacement

Exact Count

Only Minimum

Only Maximum

Complete Example

See Also

​Overview

​UniqueInPivot

​Constructor Parameters

​Create Example

​Update Example

​Schema Support

​UniqueInPivotArray

​Constructor Parameters

​Bulk Create Example

​Bulk Update Example

​UniqueCompositeInArray

​Constructor Parameters

​Bulk Create Example

​Bulk Update Example

​Multi-Tenant Example

​ArrayCount

​Constructor Parameters

​Basic Usage

​Custom Global Message

​Per-Scenario Messages

​Token Replacement

​Exact Count

​Only Minimum

​Only Maximum

​Complete Example

​See Also

Overview

UniqueInPivot

Constructor Parameters

Create Example

Update Example

Schema Support

UniqueInPivotArray

Constructor Parameters

Bulk Create Example

Bulk Update Example

UniqueCompositeInArray

Constructor Parameters

Bulk Create Example

Bulk Update Example

Multi-Tenant Example

ArrayCount

Constructor Parameters

Basic Usage

Custom Global Message

Per-Scenario Messages

Token Replacement

Exact Count

Only Minimum

Only Maximum

Complete Example

See Also