[英]Setting the value of DatePicker (from antd) in react-hook-form
[英]React Datepicker with react-hook-form Controller outputting undefined on form submit. Starting value passed from props
我在 react-hook-form 的 Controller 中使用 react-datepicker。 我将 props 的开始日期传递给我的表单组件,然后我使用 useState 将该 prop 值存储在组件 state 中。 变量的类型似乎是日期 object,但我不明白为什么在提交表单时将其用作 Datepicker 上的选定值会导致该值返回未定义。 我没有点击 Datepicker。 提交带有初始值的表单时会出现此未定义的问题。 如果我更改它的值并提交表单,它会按预期返回日期 object。 如果用户不进行任何更改,我希望它返回一个值。 它应该使用提供的初始值提交,而不是未定义。
我有两个日期条目。 如果我不为其提供起始值,则结束日期组件将起作用。 我已经删除了表格中与这个问题无关的其他部分。
我正在使用 react-hook-form v 7.29.0、react-datepicker v 4.7.0 和 react v 18.0。 这个最新版本的日期选择器显然不再使用时刻,而只是使用内置日期方法,所以我不确定我提供的开始日期 object 有什么问题。 有人可以就导致它返回未定义的原因提供一些指导/理解吗?
谢谢,代码如下:
import React, { useState } from 'react';
import { useForm, Controller } from 'react-hook-form';
import DatePicker from 'react-datepicker';
export default function EmployeeCard(props) {
const { register, handleSubmit, control } = useForm();
const employeeStartDateModified =new Date(props.employee.startDate);
const modifiedProps = {
...props.employee,
startDate: employeeStartDateModified,
};
const [employeeData, setInputValues] = useState(modifiedProps);
let { firstName, middleName, lastName, salary, active, startDate, id, ptoBalance } =
employeeData;
const handleOnChange = event => {
const { name, value } = event.target;
setInputValues({ ...employeeData, [name]: value });
};
// did new state for startDate to see if the object would fix the undefined issue
const [newStartDate, setNewStartDate] = useState(new Date(startDate));
const onSubmit = registerData => {
console.log(registerData); //other components of form show values, except startDate shows undefined. As soon as I change it from its initial value it console logs the date object. Same for endDate, which has no starting value. Entering a value in it and submitting returns the date object. Start date only returns undefined when provided the initial value in selected={}.
};
return (
<form
onSubmit={handleSubmit(onSubmit)}
className='centered-container-form'
key={id}
>
<div className='form-group'>
<label htmlFor='startDate'>Start Date</label>
<Controller
control={control}
name='startDate'
render={({ field: { value = newStartDate, onChange } }) => (
<DatePicker
onChange={date => {
setNewStartDate(date);
onChange(newStartDate);
}}
selected={value}
dateFormat='MM/dd/yyyy'
required
/>
)}
/>
</div>
<div className='form-group'>
<label htmlFor='endDate'>End Date</label>
<Controller
control={control}
name='endDate'
render={({ field }) => (
<DatePicker
onChange={date => field.onChange(date)}
selected={field.value}
dateFormat='MM/dd/yyyy'
/>
)}
/>
</div>
<button type='submit' className='btn btn-outline-primary'>
Update
</button>
</form>
);
}
Tive o mesmo questiona aqui, também estou utilizando DatePicker com TextField do MUI 。 Consegui resolver o problema definindo um valor default dentro de um object defaultValues dentro do useForm。
import { TextField } from "@mui/material";
import { Controller, useForm } from "react-hook-form";
import { DatePicker } from "@mui/x-date-pickers";
export default function Page() {
const { handleSubmit, control } = useForm({
defaultValues:{
// Seus valores passando o name do input que quer definir o valor
dataInicial: new Date()
}
});
const registrar = (data) => {
console.log(data);
};
return (
<form onSubmit={handleSubmit(registrar)}>
<Controller
control={control}
name="dataInicial"
render={({ field: { onChange, onBlur, value, name, ref } }) => {
return (
<DatePicker
onBlur={onBlur}
onChange={onChange}
value={value}
inputRef={ref}
renderInput={(params) => <TextField {...params} />}
/>
);
}}
/>
<button type="submit">Registrar</button>
</form>
);
}
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