验证 ReduxForm:嵌套值

Question

我在ReduxForm中有validatioin工作，直到我必须验证名称嵌套的字段，即：location.coordinates[0]。

此数据在 Redux 存储中如下所示：

"location" : {
"type" : "Point",
"coordinates" : [ 
103.8303, 
4.2494
]
},

尝试使用 验证此类字段时

方法1

if (!values.location.coordinates[0]) {
errors.location.coordinates[0] = 'Please enter a longtitude';
}

我收到错误：

类型错误： 无法读取未定义的属性"坐标">

方法2

if (values.location !== undefined) {
errors.location.coordinates[0] = 'Please enter a longtitude';
errors.location.coordinates[1] = 'Please enter a latitude';
}

我收到错误：

类型错误： 无法读取未定义的属性"坐标">

问题：处理此类字段的正确方法是什么？

/src/containers/Animals/AnimalForm.js

import React, { Component } from 'react';
import { connect } from 'react-redux';
import { reduxForm, Field } from 'redux-form';
import { renderTextField } from './FormHelpers';
class AnimalForm extends Component {
render() {
return (
<div>
<form onSubmit={ this.props.handleSubmit }                     
<Field
label="Longitude"
name="location.coordinates[0]"
component={renderTextField}
type="text"
/>                      
<Field
label="Latitude"
name="location.coordinates[1]"
component={renderTextField}
type="text"
/>   
</form>
</div>
)
}
}
const validate = values => {
let errors = {}
if (values.location !== undefined) {
errors.location.coordinates[0] = 'Please enter a longtitude';
errors.location.coordinates[1] = 'Please enter a latitude';
}
if ((values.location !== undefined) && (values.location.coordinates !== undefined)) {
errors.location.coordinates[0] = 'Please enter a longtitude';
errors.location.coordinates[1] = 'Please enter a latitude';
}
return errors;
}
function mapStateToProps(state) {
return { ... }
}
export default connect(mapStateToProps)(reduxForm({
form: 'animal',
validate
})(AnimalForm))

/src/containers/Animals/FormHelper.js

import React from 'react';
import { FormGroup, Label, Input, Alert } from 'reactstrap';
export const renderTextField = ({input, type, meta: {touched, error}, ...custom}) => (
<div>
<Label>{ label }</Label>
<Input
type={type}
value={input.value}
onChange={input.onChange}
/>
{touched && error && <Alert color="warning">{ error }</Alert>}
</div>
)

Answer 1

在验证方法中，如何构建初始错误对象：

let errors = {
location: {
coordinates: []
}
}

Answer 2

以下解决方案将起作用

const validate = values => {
let errors = values;
if(values){
if (values.location) {
errors.location.coordinates[0] = 'Please enter a longtitude';
errors.location.coordinates[1] = 'Please enter a latitude';
}
}
return errors;
}