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<?php |
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namespace Sco\Admin\Component\Concerns; |
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trait HasPermission |
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{ |
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protected $permObserve; |
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protected $permissions; |
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protected $permMethods = [ |
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'view', 'create', 'edit', |
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'delete', 'destroy', 'restore', |
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]; |
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public function isView() |
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{ |
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return method_exists($this, 'callView') && $this->can('view'); |
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} |
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public function isCreate() |
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{ |
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return method_exists($this, 'callCreate') && $this->can('create'); |
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} |
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public function isEdit() |
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{ |
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return method_exists($this, 'callEdit') && $this->can('edit'); |
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} |
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public function isDelete() |
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{ |
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return $this->can('delete'); |
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} |
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public function isDestroy() |
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{ |
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return $this->isRestorableModel() && $this->can('destroy'); |
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} |
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public function isRestore() |
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{ |
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return $this->isRestorableModel() && $this->can('restore'); |
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} |
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public function isRestorableModel() |
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{ |
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$this->getRepository()->isRestorable(); |
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} |
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public static function bootHasPermission() |
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{ |
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$instance = new static; |
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$instance->initPermissions(); |
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if ($instance->permObserve) { |
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$instance->registerObserver($instance->permObserve); |
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} |
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} |
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public function initPermissions() |
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{ |
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foreach ($this->permMethods as $method) { |
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$this->registerPermission($method, true); |
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} |
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} |
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public function registerObserver($class = null) |
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{ |
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if (!$class) { |
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return; |
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} |
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$className = is_string($class) ? $class : get_class($class); |
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foreach ($this->permMethods as $method) { |
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if (method_exists($class, $method)) { |
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$this->registerPermission($method, [$className, $method]); |
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} |
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} |
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} |
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public function registerPermission($permission, $callback) |
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{ |
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$this->permissions[$permission] = $callback; |
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} |
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public function can($permission) |
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{ |
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if (!isset($this->permissions[$permission])) { |
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return false; |
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} |
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if (is_callable($this->permissions[$permission])) { |
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return call_user_func_array($this->permissions[$permission], $this); |
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} else { |
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return $this->permissions[$permission] ? true : false; |
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} |
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} |
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public function getPermissions() |
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{ |
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$data = collect(); |
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foreach ($this->permMethods as $perm) { |
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$method = 'is' . ucfirst($perm); |
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if (!method_exists($this, $method)) { |
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$method = 'can'; |
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} |
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$data->put($perm, $this->{$method}($perm)); |
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} |
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return $data; |
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} |
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} |
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ScoLib /
admin
This check looks for methods that are used by a trait but not required by it.
To illustrate, let’s look at the following code example
The trait
Idableprovides a methodequalsIdthat in turn relies on the methodgetId(). If this method does not exist on a class mixing in this trait, the method will fail.Adding the
getId()as an abstract method to the trait will make sure it is available.