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<?php |
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namespace A17\Twill\Models; |
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use Illuminate\Support\Str; |
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use Illuminate\Foundation\Auth\User; |
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use Illuminate\Database\Eloquent\Builder; |
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use Illuminate\Database\Eloquent\Relations\MorphTo; |
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use Illuminate\Database\Eloquent\Model as BaseModel; |
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use Illuminate\Database\Eloquent\Relations\BelongsToMany; |
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/** |
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* Permission model |
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* |
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* @property-read string $permissionableModule |
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* @method static Builder global() Get global scope permissions. |
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* @method static Builder module() Get module scope permissions. |
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* @method static Builder moduleItem() Get module item scope permissions. |
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* @method static Builder ofItem(BaseModel $item) Get permissions related to an item. |
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* @method static Builder ofModuleName(string $moduleName) Get permissions related to a Twill module. |
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* @method static Builder ofModel(BaseModel $model) Get permissions related to a model. |
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*/ |
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class Permission extends BaseModel |
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{ |
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/** |
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* Constant that represents a list of permissions that belongs to the global scope. |
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* |
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* @var string |
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* @see Permission::available($scope) |
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*/ |
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const SCOPE_GLOBAL = 'global'; |
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/** |
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* Constant that represents a list of permissions that belongs to the module scope. |
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* |
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* @var string |
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* @see Permission::available($scope) |
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*/ |
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const SCOPE_MODULE = 'module'; |
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/** |
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* Constant that represents a list of permissions that belongs to the module item scope. |
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* |
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* @var string |
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* @see Permission::available($scope) |
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*/ |
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const SCOPE_ITEM = 'item'; |
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protected $fillable = [ |
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'name', |
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'permissionable_type', |
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'permissionable_id', |
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'is_default' |
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]; |
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protected $appends = ['permissionable_module']; |
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/** |
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* Return an array of permission names that belongs to |
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* a certain scope (global, module or item). |
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* |
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* @param string $scope |
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* @return string[]|void |
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*/ |
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public static function available($scope) |
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{ |
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switch ($scope) { |
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case Permission::SCOPE_GLOBAL: |
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return [ |
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'edit-settings', |
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'edit-users', |
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'edit-user-roles', |
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'edit-user-groups', |
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'manage-modules', |
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'access-media-library', |
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'edit-media-library' |
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]; |
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break; |
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case Permission::SCOPE_MODULE: |
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return array_merge( |
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[ |
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'view-module', |
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'edit-module' |
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], |
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(config('twill.permissions.level') === 'roleGroupItem' ? ['manage-module'] : []) |
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); |
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break; |
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case Permission::SCOPE_ITEM: |
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return [ |
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'view-item', |
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'edit-item', |
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'manage-item' |
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]; |
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break; |
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} |
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} |
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/** |
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* Retrieve the list of modules that permissions can be applied to. |
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* |
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* @return Collection |
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*/ |
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public static function permissionableModules() |
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{ |
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return collect(config('twill.permissions.modules', [])); |
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} |
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/** |
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* Retrieve a collection of items that belongs to keyed by permissionable module names. |
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* |
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* @return Collection |
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*/ |
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public static function permissionableParentModuleItems() |
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{ |
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return self::permissionableModules()->filter(function ($module) { |
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return !strpos($module, '.'); |
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})->mapWithKeys(function ($module) { |
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return [$module => getRepositoryByModuleName($module)->get([], [], [], -1)]; |
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}); |
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} |
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/** |
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* Get the parent permissionable model (one of the permissionale module). |
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* |
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* @return MorphTo|Collection|User[] |
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*/ |
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public function permissionable() |
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{ |
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return $this->morphTo(); |
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} |
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/** |
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* User model relationship |
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* @return BelongsToMany|Collection|User[] |
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*/ |
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public function users() |
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{ |
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return $this->belongsToMany(twillModel('user'), 'permission_twill_user', 'permission_id', 'twill_user_id'); |
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} |
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/** |
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* Role model relationship |
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* |
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* @return BelongsToMany|Collection|BaseModel[] |
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*/ |
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public function roles() |
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{ |
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return $this->belongsToMany(twillModel('role'), 'permission_role', 'permission_id', 'role_id'); |
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} |
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/** |
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* Group model relationship |
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* |
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* @return BelongsToMany|Collection|BaseModel[] |
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*/ |
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public function groups() |
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{ |
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return $this->belongsToMany(twillModel('group'), 'group_permission', 'permission_id', 'group_id'); |
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} |
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/** |
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* Scope a query to only include global scope permissions. |
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* |
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* @param Builder $query |
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* @return Builder |
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*/ |
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public function scopeGlobal(Builder $query) |
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{ |
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return $query->whereNull('permissionable_type')->whereNull('permissionable_id'); |
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} |
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/** |
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* Scope a query to only include module scope permissions. |
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* |
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* @param Builder $query |
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* @return Builder |
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*/ |
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public function scopeModule(Builder $query) |
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{ |
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return $query->whereNotNull('permissionable_type')->whereNull('permissionable_id'); |
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} |
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/** |
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* Scope a query to only include module item scope permissions. |
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* |
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* @param Builder $query |
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* @return Builder |
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*/ |
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public function scopeModuleItem(Builder $query) |
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{ |
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return $query->whereNotNull('permissionable_type')->whereNotNull('permissionable_id'); |
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} |
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/** |
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* Scope a query to only include permissions related to an item. |
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* |
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* @param Builder $query |
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* @param BaseModel $item |
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* @return Builder |
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*/ |
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public function scopeOfItem(Builder $query, BaseModel $item) |
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{ |
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$permissionableSubmodule = self::permissionableModules()->filter(function($module) use ($item){ |
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return strpos($module, '.') && explode('.', $module)[1] === getModuleNameByModel($item); |
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})->first(); |
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if ($permissionableSubmodule) { |
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$parentRelation = isset($item->parentRelation) ? $item->parentRelation : Str::singular(explode('.', $permissionableSubmodule)[0]); |
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$item = $item->$parentRelation; |
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} |
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return $query->where([ |
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['permissionable_type', get_class($item)], |
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['permissionable_id', $item->id], |
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]); |
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} |
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/** |
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* Scope a query to only include permissions related to a Twill module. |
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* |
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* @param Builder $query |
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* @param string $moduleName |
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* @return Builder |
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*/ |
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public function scopeOfModuleName(Builder $query, $moduleName) |
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{ |
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// Submodule's permission will inherit from parent module |
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if (strpos($moduleName, '.')) { |
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$moduleName = explode('.', $moduleName)[0]; |
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} |
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return $query->ofModel(getModelByModuleName($moduleName)); |
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} |
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/** |
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* Scope a query to only include permissions related to a model. |
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* |
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* @param Builder $query |
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* @param string $model |
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* @return Builder |
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*/ |
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public function scopeOfModel(Builder $query, $model) |
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{ |
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return $query->where('permissionable_type', $model); |
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} |
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/** |
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* Get the permissionable module type of current permission |
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* |
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* @return string |
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*/ |
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public function getPermissionableModuleAttribute() |
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{ |
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return getModuleNameByModel($this->permissionable_type); |
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} |
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} |
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Let?s assume that you have a directory layout like this:
. |-- OtherDir | |-- Bar.php | `-- Foo.php `-- SomeDir `-- Foo.phpand let?s assume the following content of
Bar.php:If both files
OtherDir/Foo.phpandSomeDir/Foo.phpare loaded in the same runtime, you will see a PHP error such as the following:PHP Fatal error: Cannot use SomeDir\Foo as Foo because the name is already in use in OtherDir/Foo.phpHowever, as
OtherDir/Foo.phpdoes not necessarily have to be loaded and the error is only triggered if it is loaded beforeOtherDir/Bar.php, this problem might go unnoticed for a while. In order to prevent this error from surfacing, you must import the namespace with a different alias: