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Cloud Code: afterDelete trigger - cascade deletion of multiple objects not working. #3396
Description
Issue Description
Problem:
Using Parse Cloud Code's afterDelete trigger to cascade-delete multiple objects from different Parse classes. For example, after a user deletes a post, I want to also delete comments AND likes associated with that post.
Note: In Parse, I have a Post, Comment, and Like class.
I think the issue(s) with my code is related to either or both of the following:
- Using
{useMasterKey: true}in the appropriate places - Passing the associated
commentsresults to the associatedlikesresults in the followingthenpromise block so to delete them together viadestroyAll()
I've searched the existing Parse-server Github issues and tried StackOverflow, forums, but haven't found anything to help resolve this.
Steps to reproduce
Here's the code I've written (not working):
Parse.Cloud.afterDelete("Post", function(request) {
var objectsToDelete = [];
var commentQuery = new Parse.Query("Comment");
commentQuery.equalTo("post", request.object);
commentQuery.find({useMasterKey: true}).then(function(comments) {
var likeQuery = new Parse.Query("Like");
likeQuery.equalTo("post", request.object);
objectsToDelete.push(comments);
return likeQuery.find({useMasterKey: true});
}).then(function(likes) {
objectsToDelete.push(likes);
return Parse.Object.destroyAll(objectsToDelete, {useMasterKey: true});
}).then(function(success) {
console.log("successfully deleted all associated comments AND likes.");
}, function(error) {
console.error("Error deleting associated comments and likes " + error.code + ": " + error.message);
});
});
Expected Results
After a user deletes a post, it should also delete the comments AND likes associated with that post.
Actual Outcome
None of the comments or likes associated with the post were deleted.
Environment Setup
- Server
- parse-server version: 2.3.2 (latest)
- Operating System: iOS (client)
- Hosted on Heroku
I appreciate any help. Thank you!
Activity
flovilmart commentedon Jan 19, 2017
Can you post the logs of such operation when running with VERBOSE=1?
dnadri commentedon Jan 19, 2017
@flovilmart Not sure if this is what you mean, but I've added the following to my ParseServer configuration in
index.js:Also, from my research, Parse Dashboard already provides the logs. Here are the logs I copied from the Parse Dashboard after deleting a post which had likes and comments associated with that post.
I personally can't tell much from these logs. So I'm not sure if there's a server-side issue or a problem with my Cloud Code syntax for achieving the expected results.
dnadri commentedon Jan 22, 2017
@flovilmart Any ideas what the issue is here?
dstarke commentedon Feb 21, 2017
I think the problem is that the
objectsToDeletearray needs to be an array of Parse objects, but you are giving it an array of arrays of Parse Objects.Try replacing
objectsToDelete.push(<list>)withobjectsToDelete = objectsToDelete.concat(<list>)both places where that pattern occurs.flovilmart commentedon Feb 21, 2017
I believe @dstarke has the answer. Also, note that this is not an issue with parse-server but with your core. For such questions, please use Stackoverflow instead.