Wildcard Firebase Query [duplicate] - javascript

This question already has answers here:
Google Firestore: Query on substring of a property value (text search)
(25 answers)
Closed 2 years ago.
Is there any possibility to insert wildcards in my Firebase query?
let query = await Firebase.db.collection('lokale').where('name', '==', name).get();
e.g.
let query = await Firebase.db.collection('lokale').where('name', '==', %name%).get();

You can't search a document which matches the substring, like in your case, but you can u integrate firebase with Algolia and search for documents which contains substring.

Related

how to make a query to access a map that is inside an array in FireStore? JavaScript [duplicate]

This question already has answers here:
Firestore to query by an array's field value
(3 answers)
How to apply filter on an array in a collection in firestore
(1 answer)
Closed 6 months ago.
How to perform query filtering on values ​​of a map nested inside an array field?
const empleado = collection(db, "empleados");
const q = query(empleado, where('solicitudAusencia', 'array-contains',''))onSnapshot(q,(snapshot)=>{
let empleados=[]
let total=[]
snapshot.forEach(doc=>{
empleados.push({...doc.data()})
})
console.log(empleados)

How to get this subcollection's ref id in firestore [duplicate]

This question already has answers here:
Fetching all collections in Firestore
(3 answers)
How to list subcollections in a Cloud Firestore document
(4 answers)
Closed 9 months ago.
I am trying to get this subcollection's ref id
I am following this tutorial however :
[2]: https://www.pluralsight.com/guides/consume-data-from-firebase-firestore-in-a-react-app
I want to get the hBYWvZ3KN3NLLrucTpryeTQZnHz2 from the firestore :
const HighlightDbId = await db.collection('highlights')
.doc('2SCS2S0JnzngWEiYkHNk')
.collection('hBYWvZ3KN3NLLrucTpryeTQZnHz2')
Please how can I possible get that id ??
The code you currently have creates a reference to the collection.
Data won't be loaded from that reference until you call get() or onSnapshot on it, so:
const HighlightDbId = await db.collection('highlights')
.doc('2SCS2S0JnzngWEiYkHNk')
.collection('hBYWvZ3KN3NLLrucTpryeTQZnHz2')
.get()

firestore updateDoc removes other fields in array [duplicate]

This question already has answers here:
How to update array elements in Firestore with Android?
(2 answers)
How to update an array item in Firestore
(2 answers)
Firestore Update single item in an array field
(2 answers)
Closed 11 months ago.
async function editBackEnd() {
const entryRef = doc(db, "accounts", user.uid)
await updateDoc(entryRef, {
"entry.0.payment": "League"
})
}
I'm trying to update certain fields in an array in firestore. I know there is no direct way to do so but with this code i am able to access the field but it removes all the other entries/fields.
How do I make sure it only updates the field that i want. in this cause im just trying to update payment of index 0
Im having issues uploading pics to stackoverlow so here's a couple url
https://imgur.com/a/1hqNgsn firestore database before updateDoc
https://imgur.com/a/Egzofvz firestore database after updateDoc

How to add field to all documents in database mongoose [duplicate]

This question already has answers here:
Add new field to every document in a MongoDB collection
(7 answers)
Closed 1 year ago.
I am trying to add a field to all documents in the database, but I am not sure how to do that. Here is my database
const db = client.schema
How would I update all documents and add a field called tiks (number) in it?
db.yourCollection.update(
{},
{ $set: {"newField": 1} },
false,
true
)
Parameters
Collection to update since you want all {}
Field to set
Upsert - only add when it is not there hence false
Multi - update multiple documents if matches to query hence true

How to get specific value or row data from firebase in web [duplicate]

This question already has answers here:
Firebase search by child value
(2 answers)
Closed 4 years ago.
basically I new to firebase, I just want to that how to retrive specific data from firebase ,
[firabase](https://i.stack.imgur.com/vk0S6.png[1]
as you can see in above image I want to retrieve like in Sql we use
Select CellNum from Student where Email="Adnan#gmail.com.
How can I do that in firebase web javascript?
Try the following:
firebase.database().ref().child("Students").orderByChild("Email").equalTo("Adnan#gmail.com").once("value", function (snapshot) {
snapshot.forEach(function(childSnapshot) {
var cellNum=childSnapshot.val().CellNum;
});
});
The snapshot is at Students, then you loop inside the id 22222 and retrieve the CellNum. The orderByChild is the query where Email="Adnan#gmail.com"

Categories