Merge pull request #986 from rasmuscnielsen/patch-field-selection-on-belongstomany-relations

Fix selecting fields on belongs to many relations

Author: freekmurze

src/Includes/IncludedRelationship.php

@@ -28,7 +28,7 @@ public function __invoke(Builder $query, string $relationship)
                 }
 
                 return [$fullRelationName => function ($query) use ($fields) {
-                    $query->select($fields);
+                    $query->select($query->qualifyColumns($fields));
                 }];
             })
             ->toArray();

tests/FieldsTest.php

@@ -174,7 +174,7 @@
     $queryBuilder->first()->relatedModels;
 
     $this->assertQueryLogContains('select `test_models`.`id` from `test_models`');
-    $this->assertQueryLogContains('select `name` from `related_models`');
+    $this->assertQueryLogContains('select `related_models`.`name` from `related_models`');
 });
 
 it('can fetch only requested string columns from an included model', function () {
@@ -197,7 +197,29 @@
     $queryBuilder->first()->relatedModels;
 
     $this->assertQueryLogContains('select `test_models`.`id` from `test_models`');
-    $this->assertQueryLogContains('select `name` from `related_models`');
+    $this->assertQueryLogContains('select `related_models`.`name` from `related_models`');
+});
+
+it('can fetch only requested string columns from an included belongs to many model', function () {
+    TestModel::first()->relatedThroughPivotModels()->create([
+        'name' => 'related',
+    ]);
+
+    $request = new Request([
+        'fields' => 'id,related_through_pivot_models.id,related_through_pivot_models.name',
+        'include' => ['relatedThroughPivotModels'],
+    ]);
+
+    $queryBuilder = QueryBuilder::for(TestModel::class, $request)
+        ->allowedFields('id', 'related_through_pivot_models.id', 'related_through_pivot_models.name')
+        ->allowedIncludes('relatedThroughPivotModels');
+
+    DB::enableQueryLog();
+
+    $queryBuilder->first()->relatedThroughPivotModels;
+
+    $this->assertQueryLogContains('select `test_models`.`id` from `test_models`');
+    $this->assertQueryLogContains('select `related_through_pivot_models`.`id`, `related_through_pivot_models`.`name`, `pivot_models`.`test_model_id` as `pivot_test_model_id`, `pivot_models`.`related_through_pivot_model_id` as `pivot_related_through_pivot_model_id` from `related_through_pivot_models` inner join `pivot_models` on `related_through_pivot_models`.`id` = `pivot_models`.`related_through_pivot_model_id` where `pivot_models`.`test_model_id` in (');
 });
 
 it('can fetch requested array columns from included models up to two levels deep', function () {
@@ -299,7 +321,7 @@
     $queryBuilder->first()->relatedModels;
 
     $this->assertQueryLogContains('select * from `test_models`');
-    $this->assertQueryLogContains('select `id`, `name` from `related_models`');
+    $this->assertQueryLogContains('select `related_models`.`id`, `related_models`.`name` from `related_models`');
 });
 
 it('wont use sketchy field requests', function () {