我在此组件中调用的任何动作似乎都给出相同的错误，而我可以在另一个组件中调用相同的动作，这没有问题。我已经检查了导入，连接/路由器，参数，操作，路由，我无法弄清楚这一点。特别是addNode动作。
这是组件：
import React, { Component } from 'react'
import {connect} from 'react-redux';
import {withRouter} from "react-router-dom";
import PropTypes from 'prop-types';
import "./AddPersonStyles.css";
import TextFieldGroup from "../common/TextFieldGroup";
import {addNode,getNodes} from "../../actions/nodeActions";
import {getTree,test} from "../../actions/treeactions";
class Interests extends Component {
constructor(props) {
super(props);
this.state = {
name: "",
parentName: ""
}
this.onChange = this.onChange.bind(this);
this.onSubmit = this.onSubmit.bind(this);
//this.props.test();
}
componentDidMount(){
}
onSubmit(e){
e.preventDefault();
const data = {
name: this.state.name
}
console.log(data.name, this.state.parentName );
this.props.addNode("Books", "Cultural");
}
onChange(e) {
this.setState({[e.target.name]: e.target.value});
}
render() {
const { displayChildren} = this.state;
let children;
let listItems;
if(!(this.props.tree2 === "" || undefined)){
console.log(this.props.tree2.children);
listItems = this.props.tree2.children.map((node) =>
<div key = {node.name}>
<Interests key = {node.name} tree2 = {node} />
</div>
);
console.log(listItems);
}
if(displayChildren){
children = (
<div className = "nodeContainer">
{listItems}
<form className ="newChild" onSubmit = {this.onSubmit}>
<div className = "row derp">
<input
className = "form-control squish form-control-lg"
placeholder="name"
name="name"
value = {this.state.name}
onChange = {this.onChange}
autoComplete = "off"
/>
<input type = "submit" value= "+" className = "btn btn-info butt"/>
</div>
</form>
</div>
)
}else{
children = (
<div></div>
)
}
let buttonName = "test";
if(!(this.props.tree2 === "")){
console.log(this.props.tree2.name);
buttonName = this.props.tree2.name;
this.state.parentName = buttonName;
}
console.log("hello")
return (
<div>
<div className = "d-flex nodeContainer flex-row ml-2 bd-highlight mb-2">
<button type = "button" className = "btn btn-info ml-2" onClick ={() => {
this.setState(prevState => ({
displayChildren: !prevState.displayChildren
}))
}}>
{buttonName}
</button>
</div>
<div className = "col nodeStack">
{children}
</div>
</div>
)
}
}
Interests.propTypes = {
//getNodes: PropTypes.func.isRequired,
//node: PropTypes.object.isRequired
//getTree: PropTypes.func.isRequired,
//tree: PropTypes.object.isRequired,
//test: PropTypes.func.isRequired
//addNode: PropTypes.func
//errors: PropTypes.object.isRequired
}
const mapStateToProps = state => ({
//node: state.node
//tree: state.tree
//errors: state.errors
})
export default connect(mapStateToProps, {addNode, getNodes, getTree, test})(withRouter(Interests));
这是动作创建者：
import { GET_ERRORS, GET_NODE} from './types';
import axios from 'axios';
export const addNode = (name, parent) => dispatch => {
axios
.post('/api/nodes/', {name, parent} )
.then(res => console.log(res))
.catch(err =>
dispatch({
type: GET_ERRORS,
payload: err.response.data
})
);
}
export const getNodes = () => dispatch => {
axios
.get("/api/nodes/")
.then(res =>
dispatch({
type: GET_NODE,
payload: res.data
}),
)
.catch(err =>
dispatch({
type: GET_NODE,
payload: null
})
);
}
供参考，这是我的其他组件，同样的操作可以正常工作。
import React, { Component } from 'react'
import {connect} from 'react-redux';
import {withRouter} from "react-router-dom";
import PropTypes from 'prop-types';
import TextFieldGroup from "../common/TextFieldGroup";
import TextAreaFieldGroup from "../common/TextAreaFieldGroup";
import SelectListGroup from "../common/SelectListGroup";
import {createProfile} from "../../actions/profileActions";
import Interests from "./Interests";
import{getTree,test} from "../../actions/treeactions";
import {addNode} from "../../actions/nodeActions";
import "./AddPersonStyles.css";
class AddPerson extends Component {
constructor(props) {
super(props);
this.state = {
name: "",
sex: "",
age: "",
city: "",
state: "",
interests: "",
bio: "",
errors: {}
}
this.props.test();
//this.props.addNode("Books", "Conceptual");
this.onChange = this.onChange.bind(this);
this.onSubmit = this.onSubmit.bind(this);
this.onSelectChange = this.onSelectChange.bind(this);
}
componentDidMount(){
}
componentWillReceiveProps(nextProps){
if(nextProps.errors){
this.setState({errors: nextProps.errors});
}
}
onSubmit(e){
e.preventDefault();
const profileData = {
name: this.state.name,
sex: this.state.sex,
age: this.state.age,
city: this.state.city,
state: this.state.state,
interests: this.state.interests,
bio: this.state.bio
}
//console.log(profileData);
this.props.createProfile(profileData, this.props.history);
}
onChange(e) {
this.setState({[e.target.name]: e.target.value});
}
onSelectChange(e) {
this.setState({status: e.target.value});
console.log(this.status);
console.log("derp");
}
render() {
const {errors} = this.state;
const {tree} = this.props;
console.log(tree);
console.log("here2");
//select options for status
const options = [
{
label: 'male',
value: "male"
},
{label: 'female', value: "female"}
];
return (
<div className = "add-person">
<div className = "container">
<div className = "row">
<div className = "col-md-8 m-auto">
<h1 className = "display-4 text-center">Add Person</h1>
<p className = "lead text-center">
enter info
</p>
<small className = "d-block pb-3">* = required fields</small>
<form onSubmit = {this.onSubmit}>
<TextFieldGroup
placeholder = "name"
name = "name"
value = {this.state.name}
onChange = {this.onChange}
error = {errors.name}
info = "name"
autoComplete = "off"
/>
<SelectListGroup
placeholder = "sex"
name = "sex"
value = {this.state.sex}
onChange = {this.onChange}
options = {options}
error = {errors.sex}
info = "sex"
/>
<TextFieldGroup
placeholder = "age"
name = "age"
value = {this.state.age}
onChange = {this.onChange}
error = {errors.age}
info = "age"
/>
<TextFieldGroup
placeholder = "city"
name = "city"
value = {this.state.city}
onChange = {this.onChange}
error = {errors.city}
info = "city"
/>
<TextFieldGroup
placeholder = "state"
name = "state"
value = {this.state.state}
onChange = {this.onChange}
error = {errors.state}
info = "state"
/>
<TextFieldGroup
placeholder = "interests"
name = "interests"
value = {this.state.interests}
onChange = {this.onChange}
error = {errors.interests}
info = "interests"
/>
<TextAreaFieldGroup
placeholder = "bio"
name = "bio"
value = {this.state.bio}
onChange = {this.onChange}
error = {errors.bio}
info = "bio"
/>
<input type = "submit" value= "Submit" className = "btn btn-info btn-block mt-4"/>
</form>
</div>
</div>
</div>
<br />
<div className = "interests">
<div className = "row">
<div className = "col">
<br />
<h1 className = "display-4 text-center">Interests</h1>
<Interests tree2 = {tree.tree} />
{console.log(tree.tree)}
<div className = "container">
</div>
</div>
</div>
</div>
</div>
)
}
}
AddPerson.propTypes = {
profile: PropTypes.object.isRequired,
errors: PropTypes.object.isRequired,
test: PropTypes.func.isRequired,
tree: PropTypes.object.isRequired
}
const mapStateToProps = state => ({
profile: state.profile,
errors: state.errors,
tree: state.tree
});
export default connect(mapStateToProps, {createProfile, addNode, test})(withRouter(AddPerson));
答案 0 :(得分：1)
由于在纯props.addNode组件上调用Interests而收到错误。 props.addNode仅在要导出的高阶组件中定义。您错误地使用了普通的，未连接的组件，该组件上没有connect和withRouter的绒毛：
...
listItems = this.props.tree2.children.map((node) =>
<div key = {node.name}>
<Interests key = {node.name} tree2 = {node} />
</div>
);
...
涂抹绒毛后一切都会好起来的
...
const InterestsWithFluff = connect(...)(withRouter(Interests))
listItems = this.props.tree2.children.map((node) =>
<div key = {node.name}>
<InterestsWithFluff key = {node.name} tree2 = {node} />
</div>
);
...