创建模型验证器，验证数据正确性

app/common/model/OperationNotice.php

@@ -17,4 +17,24 @@ class OperationNotice extends Model
         'notice_type' => 'integer',
         'status' => 'integer',
     ];
+
+    public function setPublishAtAttr($value)
+    {
+        if ($value === null || $value === '') {
+            return 0;
+        }
+        if (is_int($value)) {
+            return $value;
+        }
+        if (is_string($value)) {
+            if (ctype_digit($value)) {
+                return (int) $value;
+            }
+            $ts = strtotime($value);
+            if ($ts !== false) {
+                return $ts;
+            }
+        }
+        return 0;
+    }
 }