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lucite/model

A simple data fetching layer that uses PDO.

Installation

composer require lucite/model

Usage

A model defines 5 methods:

• ->fetchOne(int|string $id): array
• ->fetchMany(): array
• ->create(array $data): array
• ->update(int|string $id, array $data): array
• ->delete(int|string $id): void

To create a model, implement a class that extends Lucite\Model\Model and define 3 static attributes:

• public static string $tableName # the name of the table to use
• public static string $primaryKey # the name of the table's primary key (compound primary keys are not yet supported)
• public static array $columns # the table's columns, excluding the primary key.

You must also define two methods that are used to apply permissions:

• public function applyPermissionValues(array &$data): void
• public function getPermissionFilter(array &$args): string

If the table in question will never have any permissions enforced, you can use Lucite\Model\NoPermissionCheckTrait to add dummy implementations of these methods.

Instantiating a model

The model's constructor requires two parameters:

• PDO $db
• Psr\Log\LoggerInterface $logger

You may want to look at lucite/mocklogger for a simple psr-3 logger that can be used for unit testing

Debugging

Every time a model runs a query (which might be multiple times per method), two messages are logged using the ->debug method of the logger passed to the model constructor:

• The query, including placeholders (eg, SELECT id FROM table WHERE id=:id)
• The args passed to the PDO::Statement ->execute function (eg, ["id" => 4])

Implementing permissions

Details coming soon, but there is a simple example in src/Tests/ModelWithPermissionsTest.php;

Future features

Add support for 4 parameters to fetchMany

• int $page
• int $pageSize
• string $sortColumn
• array $filters (format tbd)

Support for multicolumn filtering

Details tbd.