Mixing
Redux Saga - group similar (but not all) actions into takeLeading / takeLatest
I am currently using redux-saga on a project and I want to use it to also prevent requesting the same resource multiple times.
At the moment I have multiple components on the same page requesting a resource (i.e. dispatch {types: "REQUEST_POST_COMMENTS", postId: <postIdHere>})
And I have this saga:
export function* loadPostComments() {
yield takeLatest("REQUEST_POST_COMMENTS", loadPostComments);
}
My page dispatches the following actions at the same time:
{types: "REQUEST_POST_COMMENTS", postId: 123}{types: "REQUEST_POST_COMMENTS", postId: 321}{types: "REQUEST_POST_COMMENTS", postId: 123}
And my goal is to for loadPostComments to be called twice, once for post 123 and one for post 321.
I have switched to takeLeading in the beta version - but this will only call loadPostComments once.
Is there any way to define a saga using a pattern but takeLatest to group them by the action.type value? Or any way of achieving something similar?
reactjs redux redux-saga
asked Nov 20 '18 at 12:29
cipacdacipacda
655
add a comment |
I am currently using redux-saga on a project and I want to use it to also prevent requesting the same resource multiple times.
At the moment I have multiple components on the same page requesting a resource (i.e. dispatch {types: "REQUEST_POST_COMMENTS", postId: <postIdHere>})
And I have this saga:
export function* loadPostComments() {
yield takeLatest("REQUEST_POST_COMMENTS", loadPostComments);
}
My page dispatches the following actions at the same time:
{types: "REQUEST_POST_COMMENTS", postId: 123}{types: "REQUEST_POST_COMMENTS", postId: 321}{types: "REQUEST_POST_COMMENTS", postId: 123}
And my goal is to for loadPostComments to be called twice, once for post 123 and one for post 321.
I have switched to takeLeading in the beta version - but this will only call loadPostComments once.
Is there any way to define a saga using a pattern but takeLatest to group them by the action.type value? Or any way of achieving something similar?
reactjs redux redux-saga
asked Nov 20 '18 at 12:29
cipacdacipacda
655
add a comment |
I am currently using redux-saga on a project and I want to use it to also prevent requesting the same resource multiple times.
At the moment I have multiple components on the same page requesting a resource (i.e. dispatch {types: "REQUEST_POST_COMMENTS", postId: <postIdHere>})
And I have this saga:
export function* loadPostComments() {
yield takeLatest("REQUEST_POST_COMMENTS", loadPostComments);
}
My page dispatches the following actions at the same time:
{types: "REQUEST_POST_COMMENTS", postId: 123}{types: "REQUEST_POST_COMMENTS", postId: 321}{types: "REQUEST_POST_COMMENTS", postId: 123}
And my goal is to for loadPostComments to be called twice, once for post 123 and one for post 321.
I have switched to takeLeading in the beta version - but this will only call loadPostComments once.
Is there any way to define a saga using a pattern but takeLatest to group them by the action.type value? Or any way of achieving something similar?
reactjs redux redux-saga
asked Nov 20 '18 at 12:29
cipacdacipacda
655
I am currently using redux-saga on a project and I want to use it to also prevent requesting the same resource multiple times.
At the moment I have multiple components on the same page requesting a resource (i.e. dispatch {types: "REQUEST_POST_COMMENTS", postId: <postIdHere>})
And I have this saga:
export function* loadPostComments() {
yield takeLatest("REQUEST_POST_COMMENTS", loadPostComments);
}
My page dispatches the following actions at the same time:
{types: "REQUEST_POST_COMMENTS", postId: 123}{types: "REQUEST_POST_COMMENTS", postId: 321}{types: "REQUEST_POST_COMMENTS", postId: 123}
And my goal is to for loadPostComments to be called twice, once for post 123 and one for post 321.
I have switched to takeLeading in the beta version - but this will only call loadPostComments once.
Is there any way to define a saga using a pattern but takeLatest to group them by the action.type value? Or any way of achieving something similar?
reactjs redux redux-saga
reactjs redux redux-saga
asked Nov 20 '18 at 12:29
cipacdacipacda
655
asked Nov 20 '18 at 12:29
cipacdacipacda
655
asked Nov 20 '18 at 12:29
cipacdacipacda
655
asked Nov 20 '18 at 12:29
cipacdacipacda
655
asked Nov 20 '18 at 12:29
cipacdacipacda
655
655
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
My solution
You have to save encountered postIds and to them after:
function* watchRequestPostComments() {
const encounteredPostIds = new Set()
while(true) {
const { postId } = yield take('REQUEST_POST_COMMENTS')
if (!encounteredPostIds.has(postId) {
yield fork(loadPostComments, postId)
}
encounteredPostIds.add(postId)
}
}
Explanation
There doesn't seem to exist a particular redux-saga-esque way of doing this. In any case, you have to track these IDs.
I have answered a similar question about throttling requests.
P.S.: This looks like an endless recursion. Must be an unintentional name clash:
export function* loadPostComments() {
yield takeLatest("REQUEST_POST_COMMENTS", loadPostComments)
}
answered Nov 20 '18 at 21:49
Andrey MoiseevAndrey Moiseev
1,55052945
Thank you - this seems to do the trick. The endless recursion is indeed due to an unintentional name clash while writing the question :)
– cipacda
Nov 21 '18 at 8:48
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
My solution
You have to save encountered postIds and to them after:
function* watchRequestPostComments() {
const encounteredPostIds = new Set()
while(true) {
const { postId } = yield take('REQUEST_POST_COMMENTS')
if (!encounteredPostIds.has(postId) {
yield fork(loadPostComments, postId)
}
encounteredPostIds.add(postId)
}
}
Explanation
There doesn't seem to exist a particular redux-saga-esque way of doing this. In any case, you have to track these IDs.
I have answered a similar question about throttling requests.
P.S.: This looks like an endless recursion. Must be an unintentional name clash:
export function* loadPostComments() {
yield takeLatest("REQUEST_POST_COMMENTS", loadPostComments)
}
answered Nov 20 '18 at 21:49
Andrey MoiseevAndrey Moiseev
1,55052945
Thank you - this seems to do the trick. The endless recursion is indeed due to an unintentional name clash while writing the question :)
– cipacda
Nov 21 '18 at 8:48
add a comment |
My solution
You have to save encountered postIds and to them after:
function* watchRequestPostComments() {
const encounteredPostIds = new Set()
while(true) {
const { postId } = yield take('REQUEST_POST_COMMENTS')
if (!encounteredPostIds.has(postId) {
yield fork(loadPostComments, postId)
}
encounteredPostIds.add(postId)
}
}
Explanation
There doesn't seem to exist a particular redux-saga-esque way of doing this. In any case, you have to track these IDs.
I have answered a similar question about throttling requests.
P.S.: This looks like an endless recursion. Must be an unintentional name clash:
export function* loadPostComments() {
yield takeLatest("REQUEST_POST_COMMENTS", loadPostComments)
}
answered Nov 20 '18 at 21:49
Andrey MoiseevAndrey Moiseev
1,55052945
Thank you - this seems to do the trick. The endless recursion is indeed due to an unintentional name clash while writing the question :)
– cipacda
Nov 21 '18 at 8:48
add a comment |
My solution
You have to save encountered postIds and to them after:
function* watchRequestPostComments() {
const encounteredPostIds = new Set()
while(true) {
const { postId } = yield take('REQUEST_POST_COMMENTS')
if (!encounteredPostIds.has(postId) {
yield fork(loadPostComments, postId)
}
encounteredPostIds.add(postId)
}
}
Explanation
There doesn't seem to exist a particular redux-saga-esque way of doing this. In any case, you have to track these IDs.
I have answered a similar question about throttling requests.
P.S.: This looks like an endless recursion. Must be an unintentional name clash:
export function* loadPostComments() {
yield takeLatest("REQUEST_POST_COMMENTS", loadPostComments)
}
answered Nov 20 '18 at 21:49
Andrey MoiseevAndrey Moiseev
1,55052945
My solution
You have to save encountered postIds and to them after:
function* watchRequestPostComments() {
const encounteredPostIds = new Set()
while(true) {
const { postId } = yield take('REQUEST_POST_COMMENTS')
if (!encounteredPostIds.has(postId) {
yield fork(loadPostComments, postId)
}
encounteredPostIds.add(postId)
}
}
Explanation
There doesn't seem to exist a particular redux-saga-esque way of doing this. In any case, you have to track these IDs.
I have answered a similar question about throttling requests.
P.S.: This looks like an endless recursion. Must be an unintentional name clash:
export function* loadPostComments() {
yield takeLatest("REQUEST_POST_COMMENTS", loadPostComments)
}
answered Nov 20 '18 at 21:49
Andrey MoiseevAndrey Moiseev
1,55052945
edited Nov 20 '18 at 22:09
answered Nov 20 '18 at 21:49
Andrey MoiseevAndrey Moiseev
1,55052945
answered Nov 20 '18 at 21:49
Andrey MoiseevAndrey Moiseev
1,55052945
answered Nov 20 '18 at 21:49
Andrey MoiseevAndrey Moiseev
1,55052945
1,55052945
Thank you - this seems to do the trick. The endless recursion is indeed due to an unintentional name clash while writing the question :)
– cipacda
Nov 21 '18 at 8:48
add a comment |
Thank you - this seems to do the trick. The endless recursion is indeed due to an unintentional name clash while writing the question :)
– cipacda
Nov 21 '18 at 8:48
Thank you - this seems to do the trick. The endless recursion is indeed due to an unintentional name clash while writing the question :)
– cipacda
Nov 21 '18 at 8:48
Thank you - this seems to do the trick. The endless recursion is indeed due to an unintentional name clash while writing the question :)
– cipacda
Nov 21 '18 at 8:48
add a comment |
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