geofirestore-js: ERROR: Array is not a function (evaluating 'e.docChanges()')

screenshot_2018-08-07-13-07-15

Here is my code:

 const db = firebase.firestore();
    const userCollection = db.collection('interviews');
    const geoobj = new GeoFirestore(userCollection)
    let query  = geoobj.query({
      center: coordinates,
      radius: 100,
    //  query: (ref) => ref.where('d.count', '==', 1)


    });
    query.on("ready", () => this.setState({ loading: false }));
    query.on("key_entered", (key, coords, distance) => {
      console.log("asdada",key);
    });

About this issue

Original URL
State: closed
Created 6 years ago
Comments: 15 (2 by maintainers)

Most upvoted comments

HI @joscmw95 thanks for the input i will try and share the results.

graig12 on Oct 30, 2018

As written at the bottom of the docs:

Logical OR queries. In this case, you should create a separate query for each OR condition and merge the query results in your app.

You’ll have to query for every element in the array and merge the results:

var arr =['cat','dog']
var results = []
arr.forEach(el => {
    const geoQuery = geoFirestore.query({
      center: new firebase.firestore.GeoPoint(lat, long),
      radius: val,
      query: (ref) => ref.where('d.name', '==', el)
    })
    geoQuery.on('key_entered', function(key, document, distance) {
      results.append(document)
    });
})

This is assuming that you want the results in random order and it is probably not performant because geo query will need to run n times. I would suggest you to just get data from a single geo query and filter the data client side.

joscmw95 on Oct 30, 2018

@graig12 In Firebase docs, they usually do array-contains using a string parameter. Your code is using an array, I’m not sure if that’s the problem.

Try: query: (ref) => ref.where('d.name', 'array-contains',arr.join(' '))

edit: However, this checks that the array at d.name contains an element with 'cat dog' What you seem to want to achieve is to do a ‘OR’ operator on the array of names against the DB, which is unfortunately not achievable with a single query in Firebase.

joscmw95 on Oct 30, 2018

Hi, @MichaelSolati Just to let you know if you don’t already. I am using react-native-firebase and geofirestore(2.2.1) seems to be working fine with it, I can read and write. Thank you very much for this library it’s very helpful and easy to use! keep it up, please ! 😃

AndrewAi on Sep 27, 2018

This package isn’t designed for react-native-firebase, it’s designed for the pure JavaScript firebase library. Unfortunately it will not work. (I am open to PRs for support though)

MichaelSolati on Aug 7, 2018

Probably the same reason as in #19, try to update firebase.

MvRemmerden on Aug 7, 2018