diff --git a/app/common/model/bid/BidBuyBiddingDocument.php b/app/common/model/bid/BidBuyBiddingDocument.php
index ff0ae8d53..b47b3f260 100644
--- a/app/common/model/bid/BidBuyBiddingDocument.php
+++ b/app/common/model/bid/BidBuyBiddingDocument.php
@@ -34,5 +34,15 @@ class BidBuyBiddingDocument extends BaseModel
     {
         return $this->belongsTo(\app\common\model\project\Project::class, 'project_id');
     }
+
+    public function getBidDateAttr($value)
+    {
+        return empty($value) ? '' : date('Y-m-d H:i:s', $value);
+    }
+
+    public function getBuyDateAttr($value)
+    {
+        return empty($value) ? '' : date('Y-m-d H:i:s', $value);
+    }
     
 }
\ No newline at end of file
diff --git a/app/common/model/bid/BidDocumentExamination.php b/app/common/model/bid/BidDocumentExamination.php
index af9ee7355..70597d01c 100644
--- a/app/common/model/bid/BidDocumentExamination.php
+++ b/app/common/model/bid/BidDocumentExamination.php
@@ -34,4 +34,5 @@ class BidDocumentExamination extends BaseModel
     {
         return $this->belongsTo(\app\common\model\bid\BidBuyBiddingDocument::class, 'buy_bidding_document_id');
     }
+    
 }
\ No newline at end of file