CODEWITHSUNDEEP
pythonfirebasefirebase-realtime-database
Kevin
Kevin

Reputation: 443

How to delete from firebase realtime database use python

I am using Firebase realtime database in Python, and have structure data like this:

{
  "users" : {
    "-LuOXedSsg_1vZ9WBePA" : {
      "name" : "Adam",
      "password" : "adam",
      "username" : "adam"
    },
    "-LuOXk-fE99ucZbrlBk_" : {
      "name" : "Joi",
      "password" : "joi",
      "username" : "joi"
    }
  }
}

I want to delete the child("-LuOXk-fE99ucZbrlBk_") with this code:

# input
username_to_delete = input ("username:")

data = ref.get()

for key,val in data.items():
    if (username_to_delete == val['username']):
        delete_user_ref = ref.child(key)
        delete_user_ref.set(None)
    else:
        print(usernameDoesNotExist)

I want to delete the child by setting it as NULL (None in Python), but when it starts and input the correct username, I get an error like this:

in set
     raise ValueError ('Value must not be None.')
ValueError: Value must not be None.

what should i do? i am still new in firebase and python.

Upvotes: 4

Views: 6848

Answers (1)

Peter Haddad
Peter Haddad

Reputation: 80944

You can use the delete() method:

delete_user_ref.delete()

For reference check the following docs:

https://firebase.google.com/docs/reference/admin/python/firebase_admin.db

set(value) Sets the data at this location to the given value.

The value must be JSON-serializable and not None.

Parameters:
value – JSON-serializable value to be set at this location.

Raises:
ValueError – If the provided value is None. TypeError – If the value is not JSON-serializable. FirebaseError – If an error occurs while communicating with the remote database server.

Upvotes: 4

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