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

[ektasahu027]

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);
    });

[MvRemmerden]

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

[ektasahu027]

@MvRemmerden i am using react-native-firebase package so i have to update it...

[MichaelSolati]

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)

[ektasahu027]

@MichaelSolati thanks when i use firebase its work.

[kenzdozz]

@MichaelSolati Will the package work for firebase-admin sdk???

[MichaelSolati]

@kenzdozz it should with versions 5.x.x.

[AndrewAi]

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 ! :)

[graig12]

Hi Michael,

Great job on the library. I am using firestore "firebase": "^4.13.1" along with geofirestore "^2.2.2". I am trying to accomplish the following query using array-contains. I have the following array example below.

array=['cat','dog'];

now i want to loop via firestore and do something like a .where('d.name','array-contains',array). See my query below for reference.

const collectionRef = firebase.firestore().collection('Consents') const geoFirestore = new GeoFirestore(collectionRef);

          var arr =['cat','dog']
          const geoQuery = geoFirestore.query({
          center: new firebase.firestore.GeoPoint(lat, long),
          radius: val,
          query: (ref) => ref.where('d.name', 'array-contains',arr)
   });

how can i achieve this using geofirestore, firebase and firestore.

[graig12]

should i update my firebase to react native firebase to be able to use the array contains method along with geofirestore?

[joscmw95]

@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.

[graig12]

that is correct @joscmw95 i want to achieve an OR. Since this is not possible can how would u suggest i accomplish this ?

[joscmw95]

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.

[graig12]

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

[graig12]

Hi @joscmw95 are you able to share any insight here on this post of stack over flow."https://stackoverflow.com/questions/53094022/firestore-multiple-where-query?noredirect=1#comment93100280_53094022" I am attempting to do a filter on a geofirestore/firestore database that conatians a collection of books. I am trying to filter on booktype and book age however i am getting the error "uncaught error in onsnapshot firebaseError: cursor position is outside the range of the original query " the code that i am using is below.

const collectionRef = firebase.firestore().collection('Books')

       collectionRef.where('d.details.BookType',"==",BookType)
       collectionRef = collectionRef.where('d.details.bookage',"<=",age)
       collectionRef = collectionRef.orderBy('d.details.bookage')

         const geoFirestore = new GeoFirestore(collectionRef)

          const geoQuery = geoFirestore.query({
          center: new firebase.firestore.GeoPoint(lat, long),
          radius: val,

          });

        geoQuery.on("key_entered",function(key, coords, distance) {   

storeCoordinate(key,coords.coordinates._lat,coords.coordinates._long,newdata) });

[joscmw95]

Internally geoFirestore gets its results by using startAt and endAt. The way you declare your collectionRef clashes with how it works hence the cursor error.

Detailed explanation in stackoverflow