Mixing
Conditional where clause in firestore queries
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.
javascript firebase google-cloud-firestore
edited Jan 30 '18 at 7:03
Peter Haddad
21.2k94357
asked Jan 30 '18 at 6:08
asanasasanas
5281520
add a comment |
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.
javascript firebase google-cloud-firestore
edited Jan 30 '18 at 7:03
Peter Haddad
21.2k94357
asked Jan 30 '18 at 6:08
asanasasanas
5281520
add a comment |
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.
javascript firebase google-cloud-firestore
edited Jan 30 '18 at 7:03
Peter Haddad
21.2k94357
asked Jan 30 '18 at 6:08
asanasasanas
5281520
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.
javascript firebase google-cloud-firestore
javascript firebase google-cloud-firestore
edited Jan 30 '18 at 7:03
Peter Haddad
21.2k94357
asked Jan 30 '18 at 6:08
asanasasanas
5281520
edited Jan 30 '18 at 7:03
Peter Haddad
21.2k94357
asked Jan 30 '18 at 6:08
asanasasanas
5281520
edited Jan 30 '18 at 7:03
Peter Haddad
21.2k94357
edited Jan 30 '18 at 7:03
Peter Haddad
21.2k94357
edited Jan 30 '18 at 7:03
Peter Haddad
21.2k94357
21.2k94357
asked Jan 30 '18 at 6:08
asanasasanas
5281520
asked Jan 30 '18 at 6:08
asanasasanas
5281520
asked Jan 30 '18 at 6:08
asanasasanas
5281520
5281520
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
Add the where clause to the query only when needed:
export async function getMyPosts (type) {
await api
var myPosts =
var query = api.firestore().collection('posts')
if (your_condition_is_true) { // you decide
query = query.where('status', '==', 'published')
}
const questions = await query.get()
.then(snapshot => {
snapshot.forEach(doc => {
console.log(doc.data())
})
})
.catch(catchError)
}
answered Jan 30 '18 at 6:17
Doug StevensonDoug Stevenson
78.7k994112
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
Add the where clause to the query only when needed:
export async function getMyPosts (type) {
await api
var myPosts =
var query = api.firestore().collection('posts')
if (your_condition_is_true) { // you decide
query = query.where('status', '==', 'published')
}
const questions = await query.get()
.then(snapshot => {
snapshot.forEach(doc => {
console.log(doc.data())
})
})
.catch(catchError)
}
answered Jan 30 '18 at 6:17
Doug StevensonDoug Stevenson
78.7k994112
add a comment |
Add the where clause to the query only when needed:
export async function getMyPosts (type) {
await api
var myPosts =
var query = api.firestore().collection('posts')
if (your_condition_is_true) { // you decide
query = query.where('status', '==', 'published')
}
const questions = await query.get()
.then(snapshot => {
snapshot.forEach(doc => {
console.log(doc.data())
})
})
.catch(catchError)
}
answered Jan 30 '18 at 6:17
Doug StevensonDoug Stevenson
78.7k994112
add a comment |
Add the where clause to the query only when needed:
export async function getMyPosts (type) {
await api
var myPosts =
var query = api.firestore().collection('posts')
if (your_condition_is_true) { // you decide
query = query.where('status', '==', 'published')
}
const questions = await query.get()
.then(snapshot => {
snapshot.forEach(doc => {
console.log(doc.data())
})
})
.catch(catchError)
}
answered Jan 30 '18 at 6:17
Doug StevensonDoug Stevenson
78.7k994112
Add the where clause to the query only when needed:
export async function getMyPosts (type) {
await api
var myPosts =
var query = api.firestore().collection('posts')
if (your_condition_is_true) { // you decide
query = query.where('status', '==', 'published')
}
const questions = await query.get()
.then(snapshot => {
snapshot.forEach(doc => {
console.log(doc.data())
})
})
.catch(catchError)
}
answered Jan 30 '18 at 6:17
Doug StevensonDoug Stevenson
78.7k994112
answered Jan 30 '18 at 6:17
Doug StevensonDoug Stevenson
78.7k994112
answered Jan 30 '18 at 6:17
Doug StevensonDoug Stevenson
78.7k994112
answered Jan 30 '18 at 6:17
Doug StevensonDoug Stevenson
78.7k994112
78.7k994112
add a comment |
add a comment |
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