React:子组件表单提交时重新获取父组件中的数据
React: re-fetch data in parent component when child component form submits
我有一个获取项目列表的父组件,这些组件通过子组件向下传递,最终到达每个项目的单独表单,您可以在其中更新它。提交表单后,项目值明显发生变化,但父组件不会重新呈现。
我明白为什么会这样,但是我一直在寻找解决这个问题的方法。每当提交其中一个表单时,如何使父组件重新获取数据?我可以改为更新父状态,但它不是直接子状态(类似于曾孙......)。将所有这些获取的数据保存到 Redux 并在那里更新它会更容易吗?不确定这里有哪些最佳做法!
父组件(简化):
const ThisMonth = () => {
const [expenses, setExpenses] = useState()
useEffect(() => {
axiosGet('this-month-expenses/').then(res => setExpenses(res.data))
}, [])
return (<ExpenseList expenses={expenses} />)
}
expenses 属性会向下传递几个组件,直到它到达表单(也已简化):
const ExpenseForm = ({ expense }) => {
const color = useSelector(state => {return state.user.color})
const [name, setName] = useState(expense.name)
const [category, setCategory] = useState(expense.icon.name)
const [date, setDate] = useState(Date.parse(expense.date))
const [cost, setCost] = useState(expense.cost)
const [submitting, setSubmitting] = useState(false)
const submitForm = () => {
setSubmitting(true)
axiosPost('expense/', {
"id": expense.id,
"name": name,
"date": date,
"cost": cost,
"category": category
})
.then((res) => (setSubmitting(!(res.status === 200))))
}
return (
<form>Form here...</form>
<Button
onClick={() => submitForm()}
isLoading={submitting}
w='100%'
colorScheme={color}
color='white'
mt={5}
type="submit"
>Update Expense</Button>
)
}
您可以在父级中拥有一个函数 fetchData()..
,然后将其作为 prop 提供给子级。在提交时调用它,作为 callback
.
有关更多详细信息,请添加一个最小的工作示例。
编辑;
做这样的事情
const ExpenseForm = ({ expense, onSubmitCallback }) => {
...
const submitForm = () => {
setSubmitting(true)
axiosPost('expense/', {
"id": expense.id,
"name": name,
"date": date,
"cost": cost,
"category": category
})
.then((res) => onSubmitCallback())
}
...
}
我有一个获取项目列表的父组件,这些组件通过子组件向下传递,最终到达每个项目的单独表单,您可以在其中更新它。提交表单后,项目值明显发生变化,但父组件不会重新呈现。
我明白为什么会这样,但是我一直在寻找解决这个问题的方法。每当提交其中一个表单时,如何使父组件重新获取数据?我可以改为更新父状态,但它不是直接子状态(类似于曾孙......)。将所有这些获取的数据保存到 Redux 并在那里更新它会更容易吗?不确定这里有哪些最佳做法!
父组件(简化):
const ThisMonth = () => {
const [expenses, setExpenses] = useState()
useEffect(() => {
axiosGet('this-month-expenses/').then(res => setExpenses(res.data))
}, [])
return (<ExpenseList expenses={expenses} />)
}
expenses 属性会向下传递几个组件,直到它到达表单(也已简化):
const ExpenseForm = ({ expense }) => {
const color = useSelector(state => {return state.user.color})
const [name, setName] = useState(expense.name)
const [category, setCategory] = useState(expense.icon.name)
const [date, setDate] = useState(Date.parse(expense.date))
const [cost, setCost] = useState(expense.cost)
const [submitting, setSubmitting] = useState(false)
const submitForm = () => {
setSubmitting(true)
axiosPost('expense/', {
"id": expense.id,
"name": name,
"date": date,
"cost": cost,
"category": category
})
.then((res) => (setSubmitting(!(res.status === 200))))
}
return (
<form>Form here...</form>
<Button
onClick={() => submitForm()}
isLoading={submitting}
w='100%'
colorScheme={color}
color='white'
mt={5}
type="submit"
>Update Expense</Button>
)
}
您可以在父级中拥有一个函数 fetchData()..
,然后将其作为 prop 提供给子级。在提交时调用它,作为 callback
.
有关更多详细信息,请添加一个最小的工作示例。
编辑; 做这样的事情
const ExpenseForm = ({ expense, onSubmitCallback }) => {
...
const submitForm = () => {
setSubmitting(true)
axiosPost('expense/', {
"id": expense.id,
"name": name,
"date": date,
"cost": cost,
"category": category
})
.then((res) => onSubmitCallback())
}
...
}