Laravel5权限管理方法详解

<?php namespace App\Http\Middleware;
use Illuminate\Support\Facades\Session;
use Closure;
class Permission {
  /**
   * Handle an incoming request.
   *
   * @param \Illuminate\Http\Request $request
   * @param \Closure $next
   * @return mixed
   */
  public function handle($request, Closure $next)
  {
    $permits = $this->getPermission($request);
    $admin = \App\Http\Middleware\Authenticate::getAuthUser();
    // 只要有一个有权限，就可以进入这个请求
    foreach ($permits as $permit) {
      if ($permit == '*') {
        return $next($request);
      }
      if ($admin->hasPermission($permit)) {
        return $next($request);
      }
    }
    echo "没有权限，请联系管理员";exit;
  }
  // 获取当前路由需要的权限
  public function getPermission($request)
  {
    $actions = $request->route()->getAction();
    if (empty($actions['permissions'])) {
      echo "路由没有设置权限";exit;
    }
    return $actions['permissions'];
  }
}

admin?>hasPermission(admin?>hasPermission(permit);

<?php namespace App\Models\Admin;
use App\Models\Model as BaseModel;
class Admin extends BaseModel {
  protected $table = 'admin';
  // 判断是否有某个权限
  public function hasPermission($permission)
  {
    $permission_db = $this->permissions;
    if(in_array($permission, $permission_db)) {
      return true;
    }
    return false;
  }
  // permission 是一个二维数组
  public function getPermissionsAttribute($value)
  {
    if (empty($value)) {
      return [];
    }
    $data = json_decode($value, true);
    $ret = [];
    foreach ($data as $key => $value) {
      $ret[] = $key;
      foreach ($value as $value2) {
        $ret[] = "{$key}.{$value2}";
      }
    }
    return array_unique($ret);
  }
  // 全局设置permission
  public function setPermissionsAttribute($value)
  {
    $ret = [];
    foreach ($value as $item) {
      $keys = explode('.', $item);
      if (count($keys) != 2) {
        continue;
      }
      $ret[$keys[0]][] = $keys[1];
    }
    $this->attributes['permissions'] = json_encode($ret);
  }
}

@if ($admin->hasPermission('admin.index'))
@endif