First of all, I researched the question a lot, but I could not find a solution. I would appreciate if you help.
functional component
I add the code briefly below. this is not full code
state and props
// blog id
const { id } = props.match.params;
// state
const initialState = {
title: "",
category: "",
admin_id: "",
status: false
};
const [form, setState] = useState(initialState);
const [adminList, setAdminList] = useState([]);
const [articleText, setArticleText] = useState([]);
const [me, setMe] = useState([]);
const [locked, setLocked] = useState(true);
const timerRef = useRef(null);
// queries and mutations
const { loading, error, data } = useQuery(GET_BLOG, {
variables: { id }
});
const { data: data_admin, loading: loading_admin } = useQuery(GET_ADMINS);
const [editBlog, { loading: loadingUpdate }] = useMutation(
UPDATE_BLOG
);
const [lockedBlog] = useMutation(LOCKED_BLOG);
multiple useEffect and functions
useEffect(() => {
if (!loading && data) {
setState({
title: data.blog.title,
category: data.blog.category,
admin_id: data.blog.admin.id,
status: data.blog.status
});
setArticleText({
text: data.blog.text
});
}
console.log(data);
}, [loading, data]);
useEffect(() => {
if (!loading_admin && data_admin) {
const me = data_admin.admins.filter(
x => x.id === props.session.activeAdmin.id
);
setAdminList(data_admin);
setMe(me[0]);
}
}, [data_admin, loading_admin]);
useEffect(() => {
const { id } = props.match.params;
lockedBlog({
variables: {
id,
locked: locked
}
}).then(async ({ data }) => {
console.log(data);
});
return () => {
lockedBlog({
variables: {
id,
locked: false
}
}).then(async ({ data }) => {
console.log(data);
});
};
}, [locked]);
// if loading data
if (loading || loading_admin)
return (
<div>
<CircularProgress className="loadingbutton" />
</div>
);
if (error) return <div>Error.</div>;
// update onChange form
const updateField = e => {
setState({
...form,
[e.target.name]: e.target.value
});
};
// editor update
const onChangeEditor = text => {
const currentText = articleText.text;
const newText = JSON.stringify(text);
if (currentText !== newText) {
// Content has changed
if (timerRef.current) {
clearTimeout(timerRef.current);
}
setArticleText({ text: newText });
if (!formValidate()) {
timerRef.current = setTimeout(() => {
onSubmitAuto();
}, 10000);
}
}
};
// auto save
const onSubmitAuto = () => {
if (timerRef.current) {
clearTimeout(timerRef.current);
}
editBlog({
variables: {
id,
admin_id,
title,
text: articleText.text,
category,
status
}
}).then(async ({ data }) => {
console.log(data);
});
};
// validate
const formValidate = () => {
const { title, category } = form;
return !title || !articleText.text || !category;
};
// clear state
const resetState = () => {
setState({ ...initialState });
};
return (
// jsx
)
first issue, when call onSubmitAuto
, first useEffect is running again. i dont want this.
because I just want it to work on the first mount.
second issue, if the articleText
state has changed before, when mutation it does not mutate the data in the form state. but if the form state changes first, it mutated all the data. I think this issue is the same as the first issue.
I hope I could explain the problem. :/
Ciao, I have an answer to the first issue: when onSubmitAuto
is triggered, it calls editBlog
that changes loading
. And loading
is on first useEffect
deps list.
If you don't want that, a fix could be something like that:
const isInitialMount = useRef(true);
//first useEffect
useEffect(() => {
if(isInitialMount.current) {
if (!loading && data) {
setState({
title: data.blog.title,
category: data.blog.category,
admin_id: data.blog.admin.id,
status: data.blog.status
});
setArticleText({
text: data.blog.text
});
}
console.log(data);
if (data !== undefined) isInitialMount.current = false;
}
}, [loading, data]);