How to handle error in react-query's onSuccess event?

I want to fire a function in onSuccess event but this function can failed. What is the best to handle this?

8 Replies

quickest-silver•3y ago

What should happen if it fails?

flat-fuchsiaOP•3y ago

retry the function and if it fails again modify the database

quickest-silver•3y ago

Why not use the retry option?

flat-fuchsiaOP•3y ago

because if mutation finished ok i dont want to create a new record again i want to excute the function after de mutation again

quickest-silver•3y ago

first time you're mentioning it's about mutations ....

because if mutation finished ok i dont want to create a new record again

i still don't understand this, sorry. can you try being a bit more descriptive? the retry function (on mutations and queries) is called when the actual mutationFn (or queryFn) fails. So if it succeeds, it will not be called. But it will be called if it fails I think I misread the question but it's hard to decipher 😅

flat-fuchsiaOP•3y ago

Sody if my english is not the best I am excuting a function inside on sucess:

  useMutation({
    mutationFn: async ({
      salaPath, text, userName, uid, mediaUri = null,
    }) => {
      firebasFunction() 
    },
    onSucess: async () => {
      //If the record is correctly added to the databse i execute a new function
      await functionB()
    }

  useMutation({
    mutationFn: async ({
      salaPath, text, userName, uid, mediaUri = null,
    }) => {
      firebasFunction() 
    },
    onSucess: async () => {
      //If the record is correctly added to the databse i execute a new function
      await functionB()
    }

The functionB can fail and i want to retry it 2 times I it continues failing i need to update the database again

quickest-silver•3y ago

is functionB also a mutation?

flat-fuchsiaOP•3y ago

no but if retries 3 times and it doesnt finish correctly i want to save a variable in the database (a mutation) @TkDodo 🔮 Sory i bother you but i couldnt found a good approach

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How to handle error in react-query's onSuccess event?

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