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ViewsHow to query the array from the firestore using javascript?
So, I have this firestore that looks like the picture below. How can I query the arrays that I highlighted only to javascript format?
How the Getting started with firestore does is by using [array-contains](https://firebase.google.com/docs/firestore/query-data/queries#:~:text=const%20q%20%3D%20query(citiesRef%2C%20where(%22regions,array_contains_filter.js) which looks like this as their example:
const q = query(citiesRef, where("regions", "array-contains", "west_coast"));
but what I see is that it only displays the word 'west_coast', what I want is that it will display any information in the field called 'amount' and 'title' as the picture above
1 answers
Answer question0
I'm afraid you can't. You need to retrieve the whole products array and filter locally.
Which leads to how your data is structured in Firestore. If that's the query you need, your data must have probably been structured differently.
For example:
productscould be a subcollection ofordered- or,
ordereddocuments may store the data you need to query in a separate, simplified array (liketitles: [...], amounts: [...], but that won't help for sorting or ranges in numbers anyway).
Take a look at: https://firebase.google.com/docs/firestore/manage-data/structure-data for examples and use cases like this.