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Informations about the package entrust-lumen

Forked from https://github.com/Zizaco/entrust.

ENTRUST (Lumen 5 Package)

Build Status Version License Total Downloads

Entrust-Lumen is a Fork project modified to run with Lumen. It is a succinct and flexible way to add Role-based Permissions to Lumen 5.

Contents

Installation

1) In order to install Lumen 5 Entrust, just add the following to your composer.json. Then run composer update:

to your composer.json. Then run composer install or composer update.

Then in your bootstrap/app.php add

in the same file find the line with

and add the facades as

.

If you are going to use Middleware (requires Lumen 5.1 or later) you also need to add

to $app->routeMiddleware methods array in bootstrap/app.php.

Configuration

Set the property values in the config/auth.php. These values will be used by entrust to refer to the correct user table and model.

You can also publish the configuration for this package to further customize table names and model namespaces.
Just use php artisan vendor:publish and a entrust.php file will be created in your app/config directory.

Note: You may need to install lumen-vendor-publish to publish the entrust.php file.

So that your custom configurations be integrated in your app, insert this line in your bootstrap/app.php

User relation to roles

Now generate the Entrust migration:

It will generate the <timestamp>_entrust_setup_tables.php migration. You may now run it with the artisan migrate command:

After the migration, four new tables will be present:

Models

Role

Create a Role model inside app/models/Role.php using the following example:

The Role model has three main attributes:

Both display_name and description are optional; their fields are nullable in the database.

Permission

Create a Permission model inside app/models/Permission.php using the following example:

The Permission model has the same three attributes as the Role:

In general, it may be helpful to think of the last two attributes in the form of a sentence: "The permission display_name allows a user to description."

User

Next, use the EntrustUserTrait trait in your existing User model. For example:

This will enable the relation with Role and add the following methods roles(), hasRole($name), can($permission), and ability($roles, $permissions, $options) within your User model.

Don't forget to dump composer autoload

And you are ready to go.

Soft Deleting

The default migration takes advantage of onDelete('cascade') clauses within the pivot tables to remove relations when a parent record is deleted. If for some reason you cannot use cascading deletes in your database, the EntrustRole and EntrustPermission classes, and the HasRole trait include event listeners to manually delete records in relevant pivot tables. In the interest of not accidentally deleting data, the event listeners will not delete pivot data if the model uses soft deleting. However, due to limitations in Laravel's event listeners, there is no way to distinguish between a call to delete() versus a call to forceDelete(). For this reason, before you force delete a model, you must manually delete any of the relationship data (unless your pivot tables uses cascading deletes). For example:

Usage

Concepts

Let's start by creating the following Roles and Permissions:

Next, with both roles created let's assign them to the users. Thanks to the HasRole trait this is as easy as:

Now we just need to add permissions to those Roles:

Checking for Roles & Permissions

Now we can check for roles and permissions simply by doing:

Both hasRole() and can() can receive an array of roles & permissions to check:

By default, if any of the roles or permissions are present for a user then the method will return true. Passing true as a second parameter instructs the method to require all of the items:

You can have as many Roles as you want for each User and vice versa.

The Entrust class has shortcuts to both can() and hasRole() for the currently logged in user:

You can also use placeholders (wildcards) to check any matching permission by doing:

User ability

More advanced checking can be done using the awesome ability function. It takes in three parameters (roles, permissions, options):

Either of the roles or permissions variable can be a comma separated string or array:

This will check whether the user has any of the provided roles and permissions. In this case it will return true since the user is an admin and has the create-post permission.

The third parameter is an options array:

Here is an example output:

The Entrust class has a shortcut to ability() for the currently logged in user:

Middleware

You can use a middleware to filter routes and route groups by permission or role

It is possible to use pipe symbol as OR operator:

To emulate AND functionality just use multiple instances of middleware

For more complex situations use ability middleware which accepts 3 parameters: roles, permissions, validate_all

Short syntax route filter

To filter a route by permission or role you can call the following in your app/Http/routes.php:

Both of these methods accept a third parameter. If the third parameter is null then the return of a prohibited access will be App::abort(403), otherwise the third parameter will be returned. So you can use it like:

Furthermore both of these methods accept a fourth parameter. It defaults to true and checks all roles/permissions given. If you set it to false, the function will only fail if all roles/permissions fail for that user. Useful for admin applications where you want to allow access for multiple groups.

Route filter

Entrust roles/permissions can be used in filters by simply using the can and hasRole methods from within the Facade:

Using a filter to check for a role:

As you can see Entrust::hasRole() and Entrust::can() checks if the user is logged in, and then if he or she has the role or permission. If the user is not logged the return will also be false.

Troubleshooting

If you encounter an error when doing the migration that looks like:

Then it's likely that the id column in your user table does not match the user_id column in role_user. Make sure both are INT(10).

When trying to use the EntrustUserTrait methods, you encounter the error which looks like

Class name must be a valid object or a string

then probably you don't have published Entrust assets or something went wrong when you did it. First of all check that you have the entrust.php file in your app/config directory. If you don't, then try php artisan vendor:publish and, if it does not appear, manually copy the /vendor/zizaco/entrust/src/config/config.php file in your config directory and rename it entrust.php.

License

Entrust is free software distributed under the terms of the MIT license.

Contribution guidelines

Support follows PSR-1 and PSR-4 PHP coding standards, and semantic versioning.

Please report any issue you find in the issues page.
Pull requests are welcome.


All versions of entrust-lumen with dependencies

PHP Build Version
Package Version
Requires php Version >=5.5.0
illuminate/console Version ~5.0
illuminate/support Version ~5.0
illuminate/cache Version ~5.0
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