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<?php |
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namespace Mblarsen\LaravelRepository\Traits; |
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use Exception; |
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use Illuminate\Database\Eloquent\Relations\BelongsTo; |
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use Illuminate\Database\Eloquent\Relations\HasOneOrMany; |
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use Illuminate\Database\Eloquent\Relations\MorphOneOrMany; |
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use Illuminate\Database\Eloquent\Relations\Relation; |
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trait Sorts |
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{ |
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public function setDefaultSort(string $by, string $order = 'asc') |
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{ |
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$this->default_sort_by = $by; |
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$this->default_sort_order = $order; |
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return $this; |
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} |
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private function applySort($query) |
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{ |
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[$by, $order] = $this->resource_context->sortBy(); |
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$by = $by ?: $this->default_sort_by; |
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$order = $order ?: $this->default_sort_order; |
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if (!$by) { |
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return $this; |
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} |
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if (strpos($by, '.') === false) { |
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$query->orderBy($by, $order); |
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} else { |
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$this->applyRelationSort($query, $by, $order); |
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} |
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return $this; |
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} |
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private function applyRelationSort($query, $by, $order) |
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{ |
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/** @var Model */ |
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$model = new $this->model(); |
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[$relation_name, $by] = explode('.', $by); |
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$relation = $model->$relation_name(); |
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[$model_key, $relation_key, $morph_class] = $this->getJoinKeys( |
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$relation, |
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); |
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$related = $relation->getRelated(); |
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$query->orderBy( |
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$related |
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::select($by) |
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->whereColumn($relation_key, $model_key) |
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->when($morph_class, function ($query) use ($morph_class) { |
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$query->where($morph_class, $this->model); |
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}) |
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->limit(1), |
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$order, |
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); |
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} |
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private function getJoinKeys(Relation $relation): array |
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{ |
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if ($relation instanceof BelongsTo) { |
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return [ |
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$relation->getQualifiedForeignKeyName(), |
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$relation->getQualifiedOwnerKeyName(), |
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null, |
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]; |
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} |
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if ($relation instanceof MorphOneOrMany) { |
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return [ |
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$relation->getQualifiedParentKeyName(), |
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$relation->getQualifiedForeignKeyName(), |
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$relation->getMorphType(), |
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]; |
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} |
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if ($relation instanceof HasOneOrMany) { |
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return [ |
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$relation->getQualifiedParentKeyName(), |
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$relation->getQualifiedForeignKeyName(), |
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null, |
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]; |
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} |
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throw new Exception( |
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'Relation type ' . class_basename($relation) . ' is not supported', |
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); |
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} |
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} |
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