2.6

Author: hikki

src/Linear.php

@@ -10,18 +10,22 @@ class Linear extends DLPField
     public function render()
     {
         $id = $this->formatName($this->id);
-        if(isset($this->columns)){
+        if (isset($this->columns)) {
             $columns = json_encode($this->columns);
-        }else{
+        } else {
             $columns = [];
-            foreach (array_keys(current($this->options)) as $key){
-                $columns[$key] = ['name'=>$key,'type' => 'text'];
+            $record = current($this->options);
+            if (!is_array($record) || empty($record)) {
+                return;
+            }
+            foreach (array_keys($record) as $key) {
+                $columns[$key] = ['name' => $key, 'type' => 'text'];
             }
             $columns = json_encode($columns);
         }
-        $options = isset($this->attributes['options']) ?  json_encode($this->attributes['options']) : json_encode(['sortable'=>true,'delete'=>true]);
-        $height = isset($this->attributes['height']) ?  $this->attributes['height'] : '360px';
-        $this->addVariables(['height'=>$height]);
+        $options = isset($this->attributes['options']) ? json_encode($this->attributes['options']) : json_encode(['sortable' => true, 'delete' => true]);
+        $height = isset($this->attributes['height']) ? $this->attributes['height'] : '360px';
+        $this->addVariables(['height' => $height]);
         $data = json_encode($this->options, JSON_UNESCAPED_UNICODE | JSON_HEX_QUOT | JSON_HEX_APOS);
         $this->script = <<<EOT
 new ComponentLine("{$id}",JSON.parse('{$columns}'),JSON.parse('{$data}'),JSON.parse('{$options}'));