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<?php |
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namespace Staudenmeir\EloquentEagerLimitXLaravelAdjacencyList\Eloquent\Relations; |
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use Illuminate\Database\Query\Expression; |
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use Staudenmeir\EloquentEagerLimitXLaravelAdjacencyList\Eloquent\Relations\Traits\HasEagerLimit; |
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use Staudenmeir\LaravelAdjacencyList\Eloquent\Relations\Descendants as Base; |
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class Descendants extends Base |
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{ |
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use HasEagerLimit; |
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/** |
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* Set the "limit" value of the query. |
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* |
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* @param int $value |
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* @return $this |
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*/ |
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public function limit($value) |
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{ |
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if ($this->parent->exists) { |
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$this->query->limit($value); |
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} else { |
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if ($this->andSelf) { |
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$this->addGroupLimit($value); |
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} else { |
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$grammar = $this->getEagerLimitGrammar(); |
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$firstPathSegment = $grammar->compileFirstPathSegment( |
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$this->related->qualifyColumn( |
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$this->related->getPathName() |
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) |
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); |
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$parentKeyQuery = $this->related->newModelQuery() |
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->select($this->getForeignKeyName()) |
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->from($this->related->getTable(), 'laravel_alias') |
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->where($this->localKey, new Expression($firstPathSegment)) |
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->limit(1); |
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$sql = $grammar->compileParentKeyOfFirstPathSegment( |
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$this->related->qualifyColumn( |
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$this->related->getPathName() |
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), |
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$this->related->qualifyColumn( |
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$this->related->getParentKeyName() |
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), |
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$parentKeyQuery->getQuery() |
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); |
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$column = new Expression($sql); |
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$this->query->groupLimit($value, $column); |
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$this->query->getQuery()->addBinding( |
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array_fill( |
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0, |
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substr_count($sql, '?'), |
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$this->related->getPathSeparator() |
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), |
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'select' |
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); |
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} |
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} |
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return $this; |
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} |
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} |
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staudenmeir /
eloquent-eager-limit-x-laravel-adjacency-list
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