[9.x] Added has and missing methods to ValidatedInput (#42184)

* Added  and  methods to ValidatedInput.

* Fixed style

* Updated doc-block

* Update src/Illuminate/Support/ValidatedInput.php

Co-authored-by: Dries Vints <[email protected]>

* Fixed all instances of array|mixed

* Changed to missing and updated comments

* Switched to Arr::has()

Co-authored-by: Dries Vints <[email protected]>

Author: Sammyjo20

src/Illuminate/Support/ValidatedInput.php

@@ -30,7 +30,7 @@ public function __construct(array $input)
     /**
      * Get a subset containing the provided keys with values from the input data.
      *
-     * @param  array|mixed  $keys
+     * @param  mixed  $keys
      * @return array
      */
     public function only($keys)
@@ -55,7 +55,7 @@ public function only($keys)
     /**
      * Get all of the input except for a specified array of items.
      *
-     * @param  array|mixed  $keys
+     * @param  mixed  $keys
      * @return array
      */
     public function except($keys)
@@ -100,6 +100,36 @@ public function all()
         return $this->input;
     }
 
+    /**
+     * Determine if the validated input has one or more keys.
+     *
+     * @param  mixed  $keys
+     * @return bool
+     */
+    public function has($keys)
+    {
+        $keys = is_array($keys) ? $keys : func_get_args();
+
+        foreach ($keys as $key) {
+            if (! Arr::has($this->input, $key)) {
+                return false;
+            }
+        }
+
+        return true;
+    }
+
+    /**
+     * Determine if the validated input is missing one or more keys.
+     *
+     * @param  mixed  $keys
+     * @return bool
+     */
+    public function missing($keys)
+    {
+        return ! $this->has($keys);
+    }
+
     /**
      * Get the instance as an array.
      *

tests/Support/ValidatedInputTest.php

@@ -30,4 +30,18 @@ public function test_can_merge_items()
         $this->assertEquals(['name' => 'Taylor'], $input->except(['votes']));
         $this->assertEquals(['name' => 'Taylor', 'votes' => 100], $input->all());
     }
+
+    public function test_input_existence()
+    {
+        $inputA = new ValidatedInput(['name' => 'Taylor']);
+
+        $this->assertEquals(true, $inputA->has('name'));
+        $this->assertEquals(true, $inputA->missing('votes'));
+        $this->assertEquals(true, $inputA->missing(['votes']));
+        $this->assertEquals(false, $inputA->missing('name'));
+
+        $inputB = new ValidatedInput(['name' => 'Taylor', 'votes' => 100]);
+
+        $this->assertEquals(true, $inputB->has(['name', 'votes']));
+    }
 }