I have fetch some data from firestore but in my query I want to add a conditional where clause. I am using async-await for api and not sure how to add a consitional where clause.
Here is my function
export async function getMyPosts (type) {
await api
var myPosts = []
const posts = await api.firestore().collection('posts').where('status', '==', 'published')
.get()
.then(snapshot => {
snapshot.forEach(doc => {
console.log(doc.data())
})
})
.catch(catchError)
}
In my main function I am getting a param called 'type'. Based on the value of that param I want to add another qhere clause to the above query. For example, if type = 'nocomments'
, then I want to add a where clause .where('commentCount', '==', 0)
, otherwise if type = 'nocategories'
, then the where clause will be querying another property like .where('tags', '==', 'none')
I am unable to understand how to add this conditional where clause.
NOTE: in firestore you add multiple conditions by just appending your where clauses like - .where("state", "==", "CA").where("population", ">", 1000000)
and so on.
See Question&Answers more detail:
os 与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…