Question

有人可以告诉我以下代码有什么问题。主要问题是该行：

fDbListAllClients;    // this is not being "called"

似乎没有被执行。

也可能有其他错误的代码。我不关心是否有必要检查删除，我想知道是什么原因导致问题的线路没有执行。

fDbDeleteOneClient(String sKey) {
  var oDbTxn      =  ogDb1.transaction(sgTblClient, 'readwrite');
  var oDbTable    =  oDbTxn.objectStore(sgTblClient);
  var oDbRecord   =   oDbTable.getObject(sKey);
  oDbRecord.onSuccess.first.then((val) {if (oDbRecord.result == null) {
    window.alert("Record $sKey not found and cannot be deleted");
    return;}});
  var oDbDelReq   =  oDbTable.delete(sKey);
  oDbDelReq.onSuccess.first.then((val1) {
    var oDbRecord   =   oDbTable.getObject(sKey);  // check if it was deleted
    oDbRecord.onSuccess.first.then((val2){
      if (oDbRecord.result != null) {
        window.alert("Record $sKey was found but cannot be deleted");
      }
    });
    fDbListAllClients;    // this is not being "called"
  });  
  oDbDelReq.onError.first.then((e) => window.alert(
    "Error on Delete of $sKey. Error = ${e}"));
}

Answer 1

部分问题或主要问题是需要使用onSuccess.listen（）。有人回答了另一个问题：

“onSuccess是一个流。如果你想收到多个元素，只需”监听“它们：onSuccess.listen。”

indexed_db - objectstore.delete - onSuccess

1 个答案: