使用 Formik 降档自动完成 onBlur 重置值
Downshift autocomplete onBlur resetting value with Formik
我有一个表单,其中有一个字段需要通过 api 调用显示建议。应该允许用户 select 这些选项之一,他们输入的值将用于提交表单,但此字段是必需的。我正在使用 Formik 来处理表单,是的,用于表单验证以检查是否需要此字段,自动完成降档,以及字段的 Material-UI。
当用户决定不使用建议的选项之一和 onBlur 触发器时,就会出现问题。 onBlur 总是重置该字段,我相信这是导致这种行为的降档,但这个问题的解决方案建议控制降档的状态,当我尝试它不能很好地与 Formik 和 Yup 一起工作时,我可以解决一些问题真的很明白,因为这些组件控制了这个字段的inputValue。
这是我目前的情况:
const AddBuildingForm = props => {
const [suggestions, setSuggestions] = useState([]);
const { values,
errors,
touched,
handleChange,
handleBlur,
handleSubmit,
modalLoading,
setFieldValue,
setFieldTouched,
classes } = props;
const loadOptions = (inputValue) => {
if(inputValue && inputValue.length >= 3 && inputValue.trim() !== "")
{
console.log('send api request', inputValue)
LocationsAPI.autoComplete(inputValue).then(response => {
let options = response.data.map(erlTO => {
return {
label: erlTO.address.normalizedAddress,
value: erlTO.address.normalizedAddress
}
});
setSuggestions(options);
});
}
setFieldValue('address', inputValue); // update formik address value
}
const handleSelectChange = (selectedItem) => {
setFieldValue('address', selectedItem.value); // update formik address value
}
const handleOnBlur = (e) => {
e.preventDefault();
setFieldValue('address', e.target.value);
setFieldTouched('address', true, true);
}
const handleStateChange = changes => {
if (changes.hasOwnProperty('selectedItem')) {
setFieldValue('address', changes.selectedItem)
} else if (changes.hasOwnProperty('inputValue')) {
setFieldValue('address', changes.inputValue);
}
}
return (
<form onSubmit={handleSubmit} autoComplete="off">
{modalLoading && <LinearProgress/>}
<TextField
id="name"
label="*Name"
margin="normal"
name="name"
type="name"
onChange={handleChange}
value={values.name}
onBlur={handleBlur}
disabled={modalLoading}
fullWidth={true}
error={touched.name && Boolean(errors.name)}
helperText={touched.name ? errors.name : ""}/>
<br/>
<Downshift id="address-autocomplete"
onInputValueChange={loadOptions}
onChange={handleSelectChange}
itemToString={item => item ? item.value : '' }
onStateChange={handleStateChange}
>
{({
getInputProps,
getItemProps,
getMenuProps,
highlightedIndex,
inputValue,
isOpen,
}) => (
<div>
<TextField
id="address"
label="*Address"
name="address"
type="address"
className={classes.autoCompleteOptions}
{...getInputProps( {onBlur: handleOnBlur})}
disabled={modalLoading}
error={touched.address && Boolean(errors.address)}
helperText={touched.address ? errors.address : ""}/>
<div {...getMenuProps()}>
{isOpen ? (
<Paper className={classes.paper} square>
{suggestions.map((suggestion, index) =>
<MenuItem {...getItemProps({item:suggestion, index, key:suggestion.label})} component="div" >
{suggestion.value}
</MenuItem>
)}
</Paper>
) : null}
</div>
</div>
)}
</Downshift>
<Grid container direction="column" justify="center" alignItems="center">
<Button id="saveBtn"
type="submit"
disabled={modalLoading}
className = {classes.btn}
color="primary"
variant="contained">Save</Button>
</Grid>
</form>
);
}
const AddBuildingModal = props => {
const { modalLoading, classes, autoComplete, autoCompleteOptions } = props;
return(
<Formik
initialValues={{
name: '',
address: '',
}}
validationSchema={validationSchema}
onSubmit = {
(values) => {
values.parentId = props.companyId;
props.submitAddBuildingForm(values);
}
}
render={formikProps => <AddBuildingForm
autoCompleteOptions={autoCompleteOptions}
autoComplete={autoComplete}
classes={classes}
modalLoading={modalLoading}
{...formikProps} />}
/>
);
}
开始使用了。需要使用 handleOuterClick 并使用 Formik 值设置降档状态:
const handleOuterClick = (state) => {
// Set downshift state to the updated formik value from handleOnBlur
state.setState({
inputValue: values.address
})
}
现在,每当我点击退出时,该值都会保留在输入字段中。
我有一个表单,其中有一个字段需要通过 api 调用显示建议。应该允许用户 select 这些选项之一,他们输入的值将用于提交表单,但此字段是必需的。我正在使用 Formik 来处理表单,是的,用于表单验证以检查是否需要此字段,自动完成降档,以及字段的 Material-UI。
当用户决定不使用建议的选项之一和 onBlur 触发器时,就会出现问题。 onBlur 总是重置该字段,我相信这是导致这种行为的降档,但这个问题的解决方案建议控制降档的状态,当我尝试它不能很好地与 Formik 和 Yup 一起工作时,我可以解决一些问题真的很明白,因为这些组件控制了这个字段的inputValue。
这是我目前的情况:
const AddBuildingForm = props => {
const [suggestions, setSuggestions] = useState([]);
const { values,
errors,
touched,
handleChange,
handleBlur,
handleSubmit,
modalLoading,
setFieldValue,
setFieldTouched,
classes } = props;
const loadOptions = (inputValue) => {
if(inputValue && inputValue.length >= 3 && inputValue.trim() !== "")
{
console.log('send api request', inputValue)
LocationsAPI.autoComplete(inputValue).then(response => {
let options = response.data.map(erlTO => {
return {
label: erlTO.address.normalizedAddress,
value: erlTO.address.normalizedAddress
}
});
setSuggestions(options);
});
}
setFieldValue('address', inputValue); // update formik address value
}
const handleSelectChange = (selectedItem) => {
setFieldValue('address', selectedItem.value); // update formik address value
}
const handleOnBlur = (e) => {
e.preventDefault();
setFieldValue('address', e.target.value);
setFieldTouched('address', true, true);
}
const handleStateChange = changes => {
if (changes.hasOwnProperty('selectedItem')) {
setFieldValue('address', changes.selectedItem)
} else if (changes.hasOwnProperty('inputValue')) {
setFieldValue('address', changes.inputValue);
}
}
return (
<form onSubmit={handleSubmit} autoComplete="off">
{modalLoading && <LinearProgress/>}
<TextField
id="name"
label="*Name"
margin="normal"
name="name"
type="name"
onChange={handleChange}
value={values.name}
onBlur={handleBlur}
disabled={modalLoading}
fullWidth={true}
error={touched.name && Boolean(errors.name)}
helperText={touched.name ? errors.name : ""}/>
<br/>
<Downshift id="address-autocomplete"
onInputValueChange={loadOptions}
onChange={handleSelectChange}
itemToString={item => item ? item.value : '' }
onStateChange={handleStateChange}
>
{({
getInputProps,
getItemProps,
getMenuProps,
highlightedIndex,
inputValue,
isOpen,
}) => (
<div>
<TextField
id="address"
label="*Address"
name="address"
type="address"
className={classes.autoCompleteOptions}
{...getInputProps( {onBlur: handleOnBlur})}
disabled={modalLoading}
error={touched.address && Boolean(errors.address)}
helperText={touched.address ? errors.address : ""}/>
<div {...getMenuProps()}>
{isOpen ? (
<Paper className={classes.paper} square>
{suggestions.map((suggestion, index) =>
<MenuItem {...getItemProps({item:suggestion, index, key:suggestion.label})} component="div" >
{suggestion.value}
</MenuItem>
)}
</Paper>
) : null}
</div>
</div>
)}
</Downshift>
<Grid container direction="column" justify="center" alignItems="center">
<Button id="saveBtn"
type="submit"
disabled={modalLoading}
className = {classes.btn}
color="primary"
variant="contained">Save</Button>
</Grid>
</form>
);
}
const AddBuildingModal = props => {
const { modalLoading, classes, autoComplete, autoCompleteOptions } = props;
return(
<Formik
initialValues={{
name: '',
address: '',
}}
validationSchema={validationSchema}
onSubmit = {
(values) => {
values.parentId = props.companyId;
props.submitAddBuildingForm(values);
}
}
render={formikProps => <AddBuildingForm
autoCompleteOptions={autoCompleteOptions}
autoComplete={autoComplete}
classes={classes}
modalLoading={modalLoading}
{...formikProps} />}
/>
);
}
开始使用了。需要使用 handleOuterClick 并使用 Formik 值设置降档状态:
const handleOuterClick = (state) => {
// Set downshift state to the updated formik value from handleOnBlur
state.setState({
inputValue: values.address
})
}
现在,每当我点击退出时,该值都会保留在输入字段中。