68 lines
2.1 KiB
PHP
68 lines
2.1 KiB
PHP
<?php
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namespace BookStack\References;
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use BookStack\Entities\Models\Entity;
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use BookStack\Entities\Models\Page;
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use BookStack\Permissions\PermissionApplicator;
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use Illuminate\Database\Eloquent\Builder;
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use Illuminate\Database\Eloquent\Collection;
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use Illuminate\Database\Eloquent\Relations\Relation;
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class ReferenceFetcher
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{
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protected PermissionApplicator $permissions;
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public function __construct(PermissionApplicator $permissions)
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{
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$this->permissions = $permissions;
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}
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/**
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* Query and return the page references pointing to the given entity.
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* Loads the commonly required relations while taking permissions into account.
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*/
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public function getPageReferencesToEntity(Entity $entity): Collection
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{
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$baseQuery = $this->queryPageReferencesToEntity($entity)
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->with([
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'from' => fn (Relation $query) => $query->select(Page::$listAttributes),
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'from.book' => fn (Relation $query) => $query->scopes('visible'),
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'from.chapter' => fn (Relation $query) => $query->scopes('visible'),
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]);
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$references = $this->permissions->restrictEntityRelationQuery(
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$baseQuery,
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'references',
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'from_id',
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'from_type'
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)->get();
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return $references;
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}
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/**
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* Returns the count of page references pointing to the given entity.
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* Takes permissions into account.
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*/
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public function getPageReferenceCountToEntity(Entity $entity): int
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{
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$count = $this->permissions->restrictEntityRelationQuery(
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$this->queryPageReferencesToEntity($entity),
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'references',
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'from_id',
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'from_type'
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)->count();
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return $count;
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}
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protected function queryPageReferencesToEntity(Entity $entity): Builder
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{
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return Reference::query()
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->where('to_type', '=', $entity->getMorphClass())
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->where('to_id', '=', $entity->id)
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->where('from_type', '=', (new Page())->getMorphClass());
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}
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}
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