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<?php |
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namespace Yajra\Acl\Traits; |
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use Illuminate\Database\Eloquent\Builder; |
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use Illuminate\Database\Eloquent\Relations\BelongsToMany; |
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use Yajra\Acl\Models\Role; |
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/** |
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* @property \Illuminate\Database\Eloquent\Collection|Role[] roles |
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* @method static Builder havingRoles($roleIds) |
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* @method static Builder havingRolesBySlugs($slugs) |
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*/ |
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trait InteractsWithRole |
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{ |
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private $roleClass; |
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/** |
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* Check if user has the given role. |
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* |
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* @param string|array $role |
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* @return bool |
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*/ |
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public function hasRole($role): bool |
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{ |
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if (is_array($role)) { |
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$roles = $this->getRoleSlugs(); |
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$intersection = array_intersect($roles, (array) $role); |
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$intersectionCount = count($intersection); |
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return $intersectionCount > 0; |
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} |
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return $this->roles->contains('slug', $role); |
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} |
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/** |
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* Get all user roles. |
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* |
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* @return array |
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*/ |
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public function getRoleSlugs(): array |
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{ |
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return $this->roles->pluck('slug')->toArray(); |
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} |
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/** |
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* Attach a role to user using slug. |
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* |
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* @param string $slug |
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*/ |
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public function attachRoleBySlug(string $slug) |
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{ |
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$this->attachRole($this->findRoleBySlug($slug)); |
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$this->load('roles'); |
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} |
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/** |
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* Attach a role to user. |
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* |
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* @param mixed $role |
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* @param array $attributes |
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* @param bool $touch |
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*/ |
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public function attachRole($role, array $attributes = [], $touch = true) |
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{ |
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$this->roles()->attach($role, $attributes, $touch); |
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$this->load('roles'); |
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} |
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/** |
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* Model can have many roles. |
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* |
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* @return \Illuminate\Database\Eloquent\Relations\BelongsToMany |
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*/ |
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public function roles(): BelongsToMany |
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{ |
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return $this->belongsToMany(config('acl.role', Role::class))->withTimestamps(); |
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} |
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/** |
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* Find a role by slug. |
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* |
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* @param string $slug |
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* @return \Illuminate\Database\Eloquent\Model|static |
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* @throws \Illuminate\Database\Eloquent\ModelNotFoundException |
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*/ |
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protected function findRoleBySlug(string $slug): Role |
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{ |
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return $this->getRoleClass()->newQuery()->where('slug', $slug)->firstOrFail(); |
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} |
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/** |
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* Get Role class. |
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* |
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* @return Role |
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*/ |
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public function getRoleClass(): Role |
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{ |
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if (!isset($this->roleClass)) { |
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$this->roleClass = resolve(config('acl.role')); |
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} |
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return $this->roleClass; |
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} |
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/** |
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* Query scope for user having the given roles. |
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* |
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* @param \Illuminate\Database\Eloquent\Builder $query |
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* @param mixed $roles |
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* @return \Illuminate\Database\Eloquent\Builder |
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*/ |
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public function scopeHavingRoles(Builder $query, $roles): Builder |
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{ |
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return $query->whereExists(function ($query) use ($roles) { |
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$query->selectRaw('1') |
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->from('role_user') |
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->whereRaw('role_user.user_id = users.id') |
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->whereIn('role_id', $roles); |
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}); |
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} |
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/** |
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* Query scope for user having the given roles by slugs. |
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* |
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* @param \Illuminate\Database\Eloquent\Builder $query |
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* @param mixed $slugs |
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* @return \Illuminate\Database\Eloquent\Builder |
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*/ |
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public function scopeHavingRolesBySlugs(Builder $query, $slugs): Builder |
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{ |
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return $query->whereHas('roles', function ($query) use ($slugs) { |
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$query->whereIn('roles.slug', $slugs); |
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}); |
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} |
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/** |
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* Revokes the given role from the user using slug. |
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* |
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* @param string|array $slug |
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* @param bool $touch |
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* @return int |
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*/ |
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public function revokeRoleBySlug($slug, $touch = true): int |
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{ |
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$roles = $this->getRoleClass() |
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->newQuery() |
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->whereIn('slug', (array) $slug) |
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->get(); |
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$detached = $this->roles()->detach($roles, $touch); |
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$this->load('roles'); |
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return $detached; |
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} |
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/** |
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* Revokes the given role from the user. |
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* |
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* @param mixed $role |
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* @param bool $touch |
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* @return int |
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*/ |
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public function revokeRole($role, $touch = true): int |
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{ |
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$detached = $this->roles()->detach($role, $touch); |
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$this->load('roles'); |
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return $detached; |
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} |
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/** |
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* Syncs the given role(s) with the user. |
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* |
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* @param \Illuminate\Support\Collection|\Illuminate\Database\Eloquent\Model|array $roles |
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* @param bool $detaching |
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* @return array |
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*/ |
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public function syncRoles($roles, $detaching = true): array |
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{ |
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$synced = $this->roles()->sync($roles, $detaching); |
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$this->load('roles'); |
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return $synced; |
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} |
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/** |
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* Revokes all roles from the user. |
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* |
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* @return int |
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*/ |
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public function revokeAllRoles(): int |
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{ |
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$detached = $this->roles()->detach(); |
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$this->load('roles'); |
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return $detached; |
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} |
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} |
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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
Idable
provides a methodequalsId
that 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.