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<?php |
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declare(strict_types=1); |
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namespace Sarala\Query; |
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use Illuminate\Database\Eloquent\Relations\Relation; |
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use Illuminate\Database\Query\Builder as QueryBuilder; |
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use Illuminate\Http\Request; |
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use Illuminate\Database\Eloquent\Builder; |
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use Illuminate\Contracts\Pagination\LengthAwarePaginator; |
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abstract class QueryBuilderAbstract |
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{ |
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/** @var Request $request */ |
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protected $request; |
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/** @var Builder $query */ |
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protected $query; |
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/** @var Fields $fields */ |
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protected $fields; |
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/** @var QueryParamBag $includes */ |
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protected $includes; |
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/** @var QueryParamBag $filters */ |
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protected $filters; |
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/** @var QueryHelper $queryHelper */ |
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private $queryHelper; |
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public function __construct(Request $request) |
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{ |
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$this->request = $request; |
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$this->fields = $this->request->fields(); |
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$this->includes = $this->request->includes(); |
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$this->filters = $this->request->filters(); |
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$this->query = $this->getInitialQuery(); |
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$this->queryHelper = new QueryHelper($this->query, $this->includes); |
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} |
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abstract protected function init(); |
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protected function fields() |
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{ |
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// .. |
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} |
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protected function filter(QueryParamBag $filters) |
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{ |
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// .. |
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} |
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protected function include(QueryParamBag $includes) |
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{ |
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// .. |
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} |
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protected function sort(): array |
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{ |
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return []; |
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} |
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public function exact($fields): QueryHelper |
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{ |
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return $this->queryHelper->exact($fields); |
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} |
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public function countExact($fields): QueryHelper |
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{ |
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return $this->queryHelper->countExact($fields); |
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} |
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public function alias($fields, $value = null): QueryHelper |
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{ |
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return $this->queryHelper->alias($fields, $value); |
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} |
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public function countAlias($fields, $value = null): QueryHelper |
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{ |
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return $this->queryHelper->countAlias($fields, $value); |
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} |
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public function fetch() |
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{ |
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$this->fields(); |
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if ($this->request->filled('filter')) { |
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$this->filter($this->filters); |
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} |
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if ($this->request->filled('include')) { |
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$this->include($this->includes); |
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} |
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if ($this->request->filled('sort')) { |
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$this->appendSortQuery(); |
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} |
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if ($this->request->filled('page')) { |
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return $this->appendParamsToPaginatedUrl(); |
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} |
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return $this->query->get(); |
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} |
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private function appendSortQuery(): void |
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{ |
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$allowedSorts = $this->sort(); |
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$this->request->sorts()->each(function (SortField $field) use ($allowedSorts) { |
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if (in_array($field->getField(), $allowedSorts)) { |
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$this->query->orderBy($field->getField(), $field->getDirection()); |
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} |
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}); |
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} |
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private function appendParamsToPaginatedUrl(): LengthAwarePaginator |
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{ |
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$perPage = $this->request->input('page.size', 10); |
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$page = $this->request->input('page.number', 1); |
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$paginator = $this->query->paginate($perPage, ['*'], 'page[number]', $page); |
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$paginator->appends($this->request->except('page')); |
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foreach ($this->request->get('filter', []) as $key => $value) { |
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if (is_null($value)) { |
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$value = ''; |
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} |
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$paginator->appends("filter[{$key}]", $value); |
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} |
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if (! is_null($this->request->input('page.size'))) { |
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$paginator->appends('page[size]', $this->request->input('page.size')); |
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} |
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return $paginator; |
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} |
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public function fetchFirst() |
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{ |
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return $this->fetch()->first(); |
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} |
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private function getInitialQuery() |
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{ |
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$query = $this->init(); |
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if ($query instanceof Builder || $query instanceof QueryBuilder || $query instanceof Relation) { |
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return $query; |
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} |
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throw new \Exception( |
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'Expected init() method to return '.Builder::class.', '.QueryBuilder::class.' or a '.Relation::class.'. '.gettype($query).' returned.' |
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); |
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} |
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} |
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