Introduce Arr::prependKeysWith helper (#42448)

* Adding new Arr helper to prepend all associative array key names with a provided prefix. * Undoing incorrect delete of phpunit.xml.dist * use Collections for mapping the keys. * replace helper function by Collection class * typo * fix styleCI issues * fix styleCI issues
laravel · May 19, 2022 · ffa6cca · ffa6cca
1 parent e05f51a
commit ffa6cca
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diff --git a/src/Illuminate/Collections/Arr.php b/src/Illuminate/Collections/Arr.php
@@ -466,6 +466,20 @@ public static function keyBy($array, $keyBy)
         return Collection::make($array)->keyBy($keyBy)->all();
     }
 
+    /**
+     * Prepend the key names of an associative array.
+     *
+     * @param  array  $array
+     * @param  string  $prependWith
+     * @return array
+     */
+    public static function prependKeysWith($array, $prependWith)
+    {
+        return Collection::make($array)->mapWithKeys(function ($item, $key) use ($prependWith) {
+            return [$prependWith.$key => $item];
+        })->all();
+    }
+
     /**
      * Get a subset of the items from the given array.
      *

diff --git a/tests/Support/SupportArrTest.php b/tests/Support/SupportArrTest.php
@@ -1076,4 +1076,25 @@ public function testKeyBy()
             '498' => ['id' => '498', 'data' => 'hgi'],
         ], Arr::keyBy($array, 'id'));
     }
+
+    public function testPrependKeysWith()
+    {
+        $array = [
+            'id' => '123',
+            'data' => '456',
+            'list' => [1, 2, 3],
+            'meta' => [
+                'key' => 1,
+            ],
+        ];
+
+        $this->assertEquals([
+            'test.id' => '123',
+            'test.data' => '456',
+            'test.list' => [1, 2, 3],
+            'test.meta' => [
+                'key' => 1,
+            ],
+        ], Arr::prependKeysWith($array, 'test.'));
+    }
 }