Question

我有一个最初由某人创建的post对象，然后将触发Firebase函数，然后将其添加到Algolia中以供以后查询。当用户删除帖子时，从Algolia中删除对象时出现一些问题。该功能已在Firebase中触发，但它是“更新”帖子，而不是删除帖子。

以下是Firebase功能控制台中的日志：

onPostWrite: Function execution took 79 ms, finished with status: 'ok'
onPostWrite: Function execution started
onPostWrite: Updated post -Lb3lcmWn1iXAdnbFDmo

以下是该函数执行的代码：

exports.onPostWrite = functions.database.ref('/posts/{postId}').onWrite((snapshot, context) => {
  const index = client.initIndex(ALGOLIA_INDEX_POSTS);
  //When the data is first created...
  if (snapshot.before.exists()) {
    const post = snapshot.before.val();

    post.objectID = context.params.postId;

    console.log('Updated post ', post.objectID);
    return index.saveObject(post);
  }
  //When data has been deleted...
  if (!snapshot.after.exists()) {
    const post = snapshot.before.val();

    post.objectID = context.params.postId;

    console.log('Deleted post ', post.objectID);
    return index.deleteObject(post.objectID);
  }

  if (!snapshot.before.exists()) {
    const post = snapshot.after.val();

    post.objectID = context.params.postId;

    console.log('Created post ', post.objectID);
    return index.saveObject(post);
  }
});

如您所知，它仅执行“更新”命令，而不执行create或delete命令。

我认为这可能与我的IF语句有关，但我不确定。任何帮助将不胜感激。

Answer 1

您需要切换<body> <div id="T&M" style="display: block;"> <select id="MAIN" name="category"> <option value="0">Labor</option> <option value ="1">Materials & Equipment</option> <option value ="2">Equipment</option> <option value ="3">Subcontractor</option> </select> <div id="Labor" style="display: inline;"> <select id="laborchoices" name="labor"> <option value="laborchoices0">Supervisor</option> <option value ="laborchoices1">Operator</option> <option value ="laborchoices2">Rigger</option> </select> <div id="sup" style="display: inline;"> <br /><br />Qty: <input type='number' step='0.25' value='1'></input> EA <br /><br /> MH/Unit: <input type='number' step='0.25' value='2'></input> Total MH: <input type='number' step='0.05' value='1'></input><br /><br /> Rate: $<input id='rate1' type='number' step='0.25' placeholder=$rate ></input> Total: $<br /><br /> Comments: <textarea cols='30' rows='3'></textarea></input> </div> <div id="opr" style="display: none;"> <br /><br />Qty: <input type='number' step='0.25' value='1'></input> EA <br /><br /> MH/Unit: <input type='number' step='0.25' value='2'></input> Total MH: <input type='number' step='0.05' value='1'></input><br /><br /> Rate: $<input id='rate2' type='number' step='0.25' placeholder=$rate ></input> Total: $<br /><br /> Comments: <textarea cols='30' rows='3'></textarea></input> </div> <div id="rig" style="display: none;"> <br /><br />Qty: <input type='number' step='0.25' value='1'></input> EA <br /><br /> MH/Unit: <input type='number' step='0.25' value='2'></input> Total MH: <input type='number' step='0.05' value='1'></input><br /><br /> Rate: $<input id='rate3' type='number' step='0.25' placeholder=$rate ></input> Total: $<br /><br /> Comments: <textarea cols='40' rows='3'></textarea></input> </div> </div> <div id="mateq" style="display: none;"> <select id="choices1" name="form_select"> <option value="mateqchoices0">Stands</option> <option value ="mateqchoices1">Beams</option> <option value ="mateqchoices2">Mats</option> <option value ="mateqchoices3">Other</option> </select> <div id="stands" style="display: inline;"> <br /><br />DAYS: <input type='number' step='1' value='0'></input> Qty: <input type='number' step='1' value='0'></input><br /><br /> $/Unit: <input type='number' step='0.05' value='10.00'></input> Total: $ <br /><br /> Description: <textarea cols='40' rows='3'></textarea></input> </div> <div id="beams" style="display: none;"> <br /><br />DAYS: <input type='number' step='1' value='0'></input> Qty: <input type='number' step='1' value='0'></input><br /><br /> $/Unit: <input type='number' step='0.05' value='10.00'></input> Total: $ <br /><br /> Description: <textarea cols='40' rows='3'></textarea></input> </div> <div id="Mats" style="display: none;"> <br /><br />DAYS: <input type='number' step='1' value='0'></input> Qty: <input type='number' step='1' value='0'></input><br /><br /> $/Unit: <input type='number' step='0.05' value='10.00'></input> Total: $ <br /><br /> Description: <textarea cols='40' rows='3'></textarea></input> </div> <div id="othermateq" style="display: none;"> <br /><br />DAYS: <input type='number' step='1' value='0'></input> Qty: <input type='number' step='1' value='0'></input><br /><br /> $/Unit: <input type='number' step='0.05' value='10.00'></input> Total: $ <br /><br /> Description: <textarea cols='40' rows='3'></textarea></input> </div> </div> <div id="equip" style="display: none;"> <select id="choices2" name="form_select"> <option value="equipchoices0">Trailer</option> <option value ="equipchoices1">Other</option> </select> <div id="trailer" style="display: inline;"> <br /><br />DAYS: <input type='number' step='1' value='0'></input> Qty: <input type='number' step='1' value='0'></input><br /><br /> $/Unit: <input type='number' step='0.05' value='10.00'></input> Total: $ <br /><br /> Description: <textarea cols='40' rows='3'></textarea></input> </div> <div id="otherequip" style="display: none;"> <br /><br />DAYS: <input type='number' step='1' value='0'></input> Qty: <input type='number' step='1' value='0'></input><br /><br /> $/Unit: <input type='number' step='0.05' value='10.00'></input> Total: $ <br /><br /> Description: <textarea cols='40' rows='3'></textarea></input> </div> </div> <div id="subq" style="display: none;"> <select id="choices3" name="form_select"> <option value="subq0">Per diem</option> <option value ="subq1">Other</option> </select> <div id="perdiem" style="display: inline;"> <br /><br />Qty: <input type='number' step='0.25' value='1'></input> EA <br /><br /> Rate: <input type='number' step='0.05' value='160.00'></input> Total: $ <br /><br /> Description: <textarea cols='40' rows='3'></textarea></input> </div> <div id="othersubq" style="display: none;"> <br /><br />Qty: <input type='number' step='0.25' value='1'></input> EA <br /><br /> Rate: <input type='number' step='0.05' value='160.00'></input> Total: $ <br /><br /> Description: <textarea cols='40' rows='3'></textarea></input> </div> </div> </div> </body>语句的顺序。

if

由于您要在每个块中返回，因此即使删除了第一个块，您的执行也会停止。我认为，如果您交换了前两个代码块，它将按预期工作：

// Called onUpdate, a snapshot exists before the update and exists after the update
// Called onDeletion, a snapshot exists before the update and doesn't exist after the update
if (snapshot.before.exists()) {

// Called onDeletion, nothing exists after operation
if (!snapshot.after.exists()) {

// Called onCreate. Nothing existed `before`, but it does now
if (!snapshot.before.exists()) {

注意：由于前两个将捕获// Called onDelete, nothing exists after operation if (!snapshot.after.exists()) { // Called onUpdate, a snapshot exists before the update and exists after the update // Called onDelete, a snapshot exists before the update and doesn't exist after the update // Since you've moved a "better" `onDelete` above this, this function will now only be called for onUpdate if (snapshot.before.exists()) { // Called onCreate. Nothing existed `before`, but it does now if (!snapshot.before.exists()) {和if操作，因此您实际上并不需要最后一个delete语句，最后一条是代码可以采用的唯一其他路径。这是我的全部看法：

update

无法从阿尔及利亚删除对象

1 个答案: