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Laravel Native PHP 8.1 Enums

Enums are an invaluable tool for any developer working with PHP. They provide a way to easily and efficiently define a set of constants that can be used throughout a project. Enums also help to make code more maintainable and scalable. For example, they can help to define a set of values that must stay consistent throughout the project, like a list of permissions or statuses. This helps ensure that the same values are used in all the relevant parts of the code and that any changes are made in one place. Additionally, enums help to reduce the amount of manual testing needed since the values are already defined. Furthermore, enums provide a way for developers to quickly check for valid values, making it easier to spot errors in code and ensure that the application behaves as expected. Finally, enums are strongly typed, meaning that they can help to ensure that the correct type of data is used in each part of the application, which can help to improve overall code quality.

Inspired by the package BenSampo/laravel-enum this one uses the new native enums classes in PHP. The native functions are extended to work easily ams seamlessly with them in Laravel-based systems.

Everyone is welcome to contribute.

Enojy the Package!

Overview

• Install
  • Requirements
  • Composer install
• Create enum
  • Artisan command
  • Manual enum creation
• Usage
  • Base usage
  • Get specific enum values
  • Get specific enum names
  • Use static calls to get the primitive value
  • Validation
  • Localized enum

Install

Installing the PHP Composer Package

Laravel Native PHP 8.1 Enums is a powerful package that can help you construct and maintain robust and scalable Laravel-based systems.

Requirements

• Laravel 9 or higher
• PHP 8.1 or higher

Composer install

Before you begin, you'll need to make sure you have the listed requirements and Composer installed on your system. You can find instructions for doing so here.

Once you have Composer installed, you can install "Laravel Native PHP 8.1 Enums" by running the following command from your project directory:

After the installation is complete, you'll now be ready to start using native enums in your project. Have fun!

Create enum

Artisan command

You can use the following Artisan command to generate a new native enum class in your project:

Manual enum creation

You can also create a new native enum manually. The structure should look like this:

Usage

Base usage

Get specific enum values

Get specific enum names

Use static calls to get the primitive value

Validation

Enum value

You may validate that an enum value passed to a controller is a valid value for a given enum by using the EnumValue rule.

By default, type checking is set to strict, but you can bypass this by passing false to the optional second parameter of the EnumValue class.

Enum name

You can also validate on names using the EnumName rule. This is useful if you're taking the enum name as a URL parameter for sorting or filtering for example.

Enum instance

Additionally you can validate that a parameter is an instance of a given enum.

Localized enum

The Enum has to implement the LocalizedEnum interface:

Translation files can be placed here lang/en/enums.php like:

To get a translated name of a selected enum value:

Casts in Eloquent Models

Laravel's Eloquent ORM provides a powerful and expressive way to handle data in your database. When working with custom data types, like enums, it's often useful to define how these values should be cast when interacting with the database. This is where casting comes into play.

Using EnumCast in Models

If you want to use an enum in your Eloquent model, you can leverage the EnumCast feature to ensure that the enum values are correctly transformed when reading from or writing to the database. This is particularly useful when dealing with attributes that have a specific set of allowed values, such as user roles, statuses, or types.

Here’s how you can apply EnumCast in your model:

In the example above, the role attribute of the User model is cast to the UserRole enum. This means that whenever you access the role attribute, Eloquent will automatically convert the raw database value into an instance of UserRole. Similarly, when you assign a UserRole enum instance to the role attribute, Eloquent will handle the conversion to its underlying value when saving it to the database.

Handling Nullable Values

In some cases, an attribute might be optional and could have a null value in the database. If you need to support null values for an enum cast, you can do so by appending :nullable to the cast definition:

1. Define the cast with the :nullable modifier:

2. Ensure that the enum class implements the Illuminate\Contracts\Database\Eloquent\Castable contract.

IMPORTANT: The Illuminate\Contracts\Database\Eloquent\Castable contract is required to support nullable enum values in Eloquent models. Make sure that your enum class implements this contract to avoid errors when using the :nullable modifier.

With this setup, the role attribute can be null, and Eloquent will correctly handle it without throwing errors. This is useful for scenarios where an enum value may not be set initially or where it can be removed at a later time.

Casting Collections of Enums

Sometimes, you may have a model attribute that stores an array or collection of enum values. For instance, a user might have multiple roles, and these roles are stored as an array in the database. You can cast these arrays to collections of enum instances by using the :collection modifier:

1. Define the cast with the :collection modifier:

2. Ensure that the enum class implements the Illuminate\Contracts\Database\Eloquent\Castable contract.

IMPORTANT: The Illuminate\Contracts\Database\Eloquent\Castable contract is required to support casting collections of enum values in Eloquent models. Make sure that your enum class implements this contract to avoid errors when using the :collection modifier.

With this configuration, the roles attribute will be cast to a collection of UserRole enum instances. When you retrieve this attribute, Eloquent will return a collection where each item is an instance of UserRole. Similarly, when you assign a collection or array of UserRole instances to the roles attribute, Eloquent will properly convert and store the underlying values in the database.

Change log

Please see CHANGELOG for more information on what has changed recently.

Testing

Contributing

Please see CODE_OF_CONDUCT for details.

Security

If you discover any security related issues, please email [email protected] instead of using the issue tracker.

Credits

• All Devs @ mindtwo
• BenSampo/laravel-enum
• archtechx/enums
• All Contributors

License

The MIT License (MIT). Please see License File for more information.