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<?php |
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namespace Spatie\QueryBuilder\Concerns; |
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use Illuminate\Support\Collection; |
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use Illuminate\Support\Str; |
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use Spatie\QueryBuilder\Exceptions\AllowedFieldsMustBeCalledBeforeAllowedIncludes; |
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use Spatie\QueryBuilder\Exceptions\InvalidFieldQuery; |
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use Spatie\QueryBuilder\Exceptions\UnknownIncludedFieldsQuery; |
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trait AddsFieldsToQuery |
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{ |
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/** @var \Illuminate\Support\Collection */ |
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protected $allowedFields; |
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public function allowedFields($fields): self |
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{ |
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if ($this->allowedIncludes instanceof Collection) { |
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throw new AllowedFieldsMustBeCalledBeforeAllowedIncludes(); |
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} |
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$fields = is_array($fields) ? $fields : func_get_args(); |
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$this->allowedFields = collect($fields) |
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->map(function (string $fieldName) { |
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return $this->prependField($fieldName); |
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}); |
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$this->ensureAllFieldsExist(); |
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$this->addRequestedModelFieldsToQuery(); |
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return $this; |
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} |
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protected function addRequestedModelFieldsToQuery() |
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{ |
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$modelTableName = $this->getModel()->getTable(); |
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$modelFields = $this->request->fields()->get($modelTableName); |
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if (empty($modelFields)) { |
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return; |
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} |
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$prependedFields = $this->prependFieldsWithTableName($modelFields, $modelTableName); |
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$this->select($prependedFields); |
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} |
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public function getRequestedFieldsForRelatedTable(string $relation): array |
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{ |
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$fields = $this->request->fields()->mapWithKeys(function ($fields, $relation) { |
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return [Str::camel($relation) => $fields]; |
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})->get($relation); |
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if (! $fields) { |
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return []; |
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} |
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if (! $this->allowedFields instanceof Collection) { |
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// We have requested fields but no allowed fields (yet?) |
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throw new UnknownIncludedFieldsQuery($fields); |
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} |
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return $fields; |
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} |
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protected function ensureAllFieldsExist() |
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{ |
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if (! $this->throwInvalidQueryExceptions) { |
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return; |
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} |
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$requestedFields = $this->request->fields() |
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->map(function ($fields, $model) { |
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$tableName = Str::snake(preg_replace('/-/', '_', $model)); |
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$fields = array_map([Str::class, 'snake'], $fields); |
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return $this->prependFieldsWithTableName($fields, $tableName); |
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}) |
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->flatten() |
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->unique(); |
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$unknownFields = $requestedFields->diff($this->allowedFields); |
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if ($unknownFields->isNotEmpty()) { |
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throw InvalidFieldQuery::fieldsNotAllowed($unknownFields, $this->allowedFields); |
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} |
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} |
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protected function prependFieldsWithTableName(array $fields, string $tableName): array |
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{ |
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return array_map(function ($field) use ($tableName) { |
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return $this->prependField($field, $tableName); |
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}, $fields); |
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} |
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protected function prependField(string $field, ?string $table = null): string |
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{ |
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if (! $table) { |
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$table = $this->getModel()->getTable(); |
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} |
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if (Str::contains($field, '.')) { |
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// Already prepended |
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return $field; |
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} |
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return "{$table}.{$field}"; |
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} |
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} |
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In PHP it is possible to write to properties without declaring them. For example, the following is perfectly valid PHP code:
Generally, it is a good practice to explictly declare properties to avoid accidental typos and provide IDE auto-completion: