1 <?php namespace BookStack\Entities\Models;
3 use BookStack\Actions\Activity;
4 use BookStack\Actions\Comment;
5 use BookStack\Actions\Favourite;
6 use BookStack\Actions\Tag;
7 use BookStack\Actions\View;
8 use BookStack\Auth\Permissions\EntityPermission;
9 use BookStack\Auth\Permissions\JointPermission;
10 use BookStack\Entities\Tools\SearchIndex;
11 use BookStack\Entities\Tools\SlugGenerator;
12 use BookStack\Facades\Permissions;
13 use BookStack\Interfaces\Favouritable;
14 use BookStack\Interfaces\Sluggable;
16 use BookStack\Traits\HasCreatorAndUpdater;
17 use BookStack\Traits\HasOwner;
19 use Illuminate\Database\Eloquent\Builder;
20 use Illuminate\Database\Eloquent\Collection;
21 use Illuminate\Database\Eloquent\Relations\MorphMany;
22 use Illuminate\Database\Eloquent\SoftDeletes;
26 * The base class for book-like items such as pages, chapters & books.
27 * This is not a database model in itself but extended.
30 * @property string $name
31 * @property string $slug
32 * @property Carbon $created_at
33 * @property Carbon $updated_at
34 * @property int $created_by
35 * @property int $updated_by
36 * @property boolean $restricted
37 * @property Collection $tags
38 * @method static Entity|Builder visible()
39 * @method static Entity|Builder hasPermission(string $permission)
40 * @method static Builder withLastView()
41 * @method static Builder withViewCount()
43 abstract class Entity extends Model implements Sluggable, Favouritable
46 use HasCreatorAndUpdater;
50 * @var string - Name of property where the main text content is found
52 public $textField = 'description';
55 * @var float - Multiplier for search indexing.
57 public $searchFactor = 1.0;
60 * Get the entities that are visible to the current user.
62 public function scopeVisible(Builder $query): Builder
64 return $this->scopeHasPermission($query, 'view');
68 * Scope the query to those entities that the current user has the given permission for.
70 public function scopeHasPermission(Builder $query, string $permission)
72 return Permissions::restrictEntityQuery($query, $permission);
76 * Query scope to get the last view from the current user.
78 public function scopeWithLastView(Builder $query)
80 $viewedAtQuery = View::query()->select('updated_at')
81 ->whereColumn('viewable_id', '=', $this->getTable() . '.id')
82 ->where('viewable_type', '=', $this->getMorphClass())
83 ->where('user_id', '=', user()->id)
86 return $query->addSelect(['last_viewed_at' => $viewedAtQuery]);
90 * Query scope to get the total view count of the entities.
92 public function scopeWithViewCount(Builder $query)
94 $viewCountQuery = View::query()->selectRaw('SUM(views) as view_count')
95 ->whereColumn('viewable_id', '=', $this->getTable() . '.id')
96 ->where('viewable_type', '=', $this->getMorphClass())->take(1);
98 $query->addSelect(['view_count' => $viewCountQuery]);
102 * Compares this entity to another given entity.
103 * Matches by comparing class and id.
105 public function matches(Entity $entity): bool
107 return [get_class($this), $this->id] === [get_class($entity), $entity->id];
111 * Checks if the current entity matches or contains the given.
113 public function matchesOrContains(Entity $entity): bool
115 if ($this->matches($entity)) {
119 if (($entity->isA('chapter') || $entity->isA('page')) && $this->isA('book')) {
120 return $entity->book_id === $this->id;
123 if ($entity->isA('page') && $this->isA('chapter')) {
124 return $entity->chapter_id === $this->id;
131 * Gets the activity objects for this entity.
133 public function activity(): MorphMany
135 return $this->morphMany(Activity::class, 'entity')
136 ->orderBy('created_at', 'desc');
140 * Get View objects for this entity.
142 public function views(): MorphMany
144 return $this->morphMany(View::class, 'viewable');
148 * Get the Tag models that have been user assigned to this entity.
150 public function tags(): MorphMany
152 return $this->morphMany(Tag::class, 'entity')->orderBy('order', 'asc');
156 * Get the comments for an entity
158 public function comments(bool $orderByCreated = true): MorphMany
160 $query = $this->morphMany(Comment::class, 'entity');
161 return $orderByCreated ? $query->orderBy('created_at', 'asc') : $query;
165 * Get the related search terms.
167 public function searchTerms(): MorphMany
169 return $this->morphMany(SearchTerm::class, 'entity');
173 * Get this entities restrictions.
175 public function permissions(): MorphMany
177 return $this->morphMany(EntityPermission::class, 'restrictable');
181 * Check if this entity has a specific restriction set against it.
183 public function hasRestriction(int $role_id, string $action): bool
185 return $this->permissions()->where('role_id', '=', $role_id)
186 ->where('action', '=', $action)->count() > 0;
190 * Get the entity jointPermissions this is connected to.
192 public function jointPermissions(): MorphMany
194 return $this->morphMany(JointPermission::class, 'entity');
198 * Get the related delete records for this entity.
200 public function deletions(): MorphMany
202 return $this->morphMany(Deletion::class, 'deletable');
206 * Check if this instance or class is a certain type of entity.
207 * Examples of $type are 'page', 'book', 'chapter'
209 public static function isA(string $type): bool
211 return static::getType() === strtolower($type);
215 * Get the entity type as a simple lowercase word.
217 public static function getType(): string
219 $className = array_slice(explode('\\', static::class), -1, 1)[0];
220 return strtolower($className);
224 * Gets a limited-length version of the entities name.
226 public function getShortName(int $length = 25): string
228 if (mb_strlen($this->name) <= $length) {
231 return mb_substr($this->name, 0, $length - 3) . '...';
235 * Get the body text of this entity.
237 public function getText(): string
239 return $this->{$this->textField} ?? '';
243 * Get an excerpt of this entity's descriptive content to the specified length.
245 public function getExcerpt(int $length = 100): string
247 $text = $this->getText();
249 if (mb_strlen($text) > $length) {
250 $text = mb_substr($text, 0, $length-3) . '...';
257 * Get the url of this entity
259 abstract public function getUrl(string $path = '/'): string;
262 * Get the parent entity if existing.
263 * This is the "static" parent and does not include dynamic
264 * relations such as shelves to books.
266 public function getParent(): ?Entity
268 if ($this->isA('page')) {
269 return $this->chapter_id ? $this->chapter()->withTrashed()->first() : $this->book()->withTrashed()->first();
271 if ($this->isA('chapter')) {
272 return $this->book()->withTrashed()->first();
278 * Rebuild the permissions for this entity.
280 public function rebuildPermissions()
282 /** @noinspection PhpUnhandledExceptionInspection */
283 Permissions::buildJointPermissionsForEntity(clone $this);
287 * Index the current entity for search
289 public function indexForSearch()
291 app(SearchIndex::class)->indexEntity(clone $this);
297 public function refreshSlug(): string
299 $this->slug = app(SlugGenerator::class)->generate($this);
306 public function favourites(): MorphMany
308 return $this->morphMany(Favourite::class, 'favouritable');
312 * Check if the entity is a favourite of the current user.
314 public function isFavourite(): bool
316 return $this->favourites()
317 ->where('user_id', '=', user()->id)