[4.x] Filter away bad bard nodes during preprocessing (statamic#9608)

src/Fieldtypes/Bard.php

@@ -349,6 +349,13 @@ protected function processRow($row, $index)
 
     public function preProcess($value)
     {
+        // Filter out broken nodes
+        if (is_array($value)) {
+            $value = collect($value)->filter(function ($node) {
+                return array_key_exists('type', $node);
+            })->values()->all();
+        }
+
         if (empty($value) || $value === '[]') {
             return '[]';
         }

tests/Fieldtypes/BardTest.php

@@ -1211,6 +1211,20 @@ public function augment($value)
         $this->assertEquals('test.-1.words', $value['defaults']['one']['words']);
     }
 
+    /** @test */
+    public function it_filters_away_bad_nodes()
+    {
+        $data = [
+            [],
+            ['type' => 'text', 'text' => 'This is inline text.'],
+            ['text' => 'I have no type'],
+        ];
+
+        $expected = '[{"type":"paragraph","content":[{"type":"text","text":"This is inline text."}]}]';
+
+        $this->assertEquals($expected, $this->bard(['input_mode' => 'block', 'sets' => null])->preProcess($data));
+    }
+
     private function bard($config = [])
     {
         return (new Bard)->setField(new Field('test', array_merge(['type' => 'bard', 'sets' => ['one' => []]], $config)));