我在React中有一个继承案例,一个模块let credentials = {
key: userinfo['secret'],
algorithm: 'sha256',
id: userinfo['id']
}
具有组件User
和UserList
并具有自己的功能,例如在UserList组件中显示userelist并在UserForm中提交表单。在项目/库的根部,它也有自己的动作,reducer。现在,我想在多个应用程序中使用此组件。 React中最好的选择是什么?到目前为止,我在继承方面所做的尝试:
但是我不确定这是否是更好的解决方案。所以有人可以指导我如何以最佳方式实现功能吗?
UserForm
将UserCreatEdit表单继承到Project1中以扩展其功能和UI
import React, { Component } from 'react';
import { connect } from 'react-redux';
import PropTypes from 'prop-types';
import { Form, ButtonToolbar, Col, Row, Button, Alert } from "react-bootstrap";
import _ from 'lodash';
import fields from "./fields.json";
class UserCreateEdit extends Component {
constructor(props) {
super(props);
this.state = {
fields: fields,
label: "",
name: "",
type: "",
placeholder: "",
options: "",
status:false,
title:"Core:New User"
};
[
"_handleSubmit",
"_handleChange",
"_handleFieldsSubmit",
"_handleFieldsChange",
"_handleCancel"
].map((fn) => this[fn] = this[fn].bind(this));
}
static propTypes = {
fields: PropTypes.array
};
_handleSubmit(e) {
e.preventDefault();
const { label, name, type, placeholder, options } = this.state;
this.setState((prevState) => ({
fields: [
...prevState.fields, {
label,
name: name || `name--${prevState.fields.length}`,
type: type || "text",
placeholder,
options
}
]
}));
}
componentDidMount() {
// const { fields, title } = this.props;
// if(!_.isUndefined(fields)){
// this.setState({
// fields:[...fields]
// });
// }
// if(!_.isUndefined(title)){
// this.setState({
// title:[...title]
// });
// }
}
_handleChange(e) {
this.setState({ [e.target.name]: e.target.value });
}
async _handleFieldsSubmit(e) {
e.preventDefault();
console.log("json: ", JSON.stringify(this.state.fields));
const obj = {};
(Object.keys(this.refs) || []).forEach((i) => obj[this.refs[i].name] = this.refs[i].value || "");
console.log('obj: ', obj);
await this.props.saveUser({
user: obj
});
console.log('"status" :', this.props.status);
if(this.props.status){
this.setState({
status: this.state.status
});
this.props.history.push("/users");
}
}
_handleCancel = () => {
this.props.history.push("/users");
}
_handleFieldsChange(e, i) { }
render() {
const fields = (this.state.fields || []).map((f, i) => {
const { label, name, type, value: defaultValue, ...rest } = f;
return (
<Form.Group key={i} controlId={`form--${i}`}>
{(type !== "checkbox" && label) && <Form.Label>{label}</Form.Label>}
{(type === "checkbox") && (
<Form.Check
type={type}
name={`${name}`}
label={label}
defaultValue={defaultValue}
onChange={(e) => this._handleFieldsChange(e, i)}
/>
)}
{(type !== "checkbox" && type !== "select") && (
<Form.Control
type={type}
name={`${name}`}
ref={`form__${name}__${i}`}
defaultValue={defaultValue}
onChange={(e) => this._handleFieldsChange(e, i)}
{...rest}
/>
)}
{(type === "select") && (
<Form.Control
as="select"
name={`${name}`}
ref={`form__${name}__${i}`}
defaultValue={defaultValue}
onChange={(e) => this._handleFieldsChange(e, i)}
>
{(JSON.parse(f.options) || []).map((o) => <option key={o} value={o}>{o}</option>)}
</Form.Control>
)}
</Form.Group>
)
});
return (<div style={{ margin: 20 }}>
<h4>{this.state.title}</h4>
<Form className="mt-3 border-top py-3" onSubmit={this._handleFieldsSubmit} >
{fields}
{((this.state.fields || []).length > 0) && (
<ButtonToolbar>
<Button variant="primary" style={{ marginRight: 10 }} type='submit'>Save</Button>
<Button variant="danger" onClick={ () => this._handleCancel()}>Cancel</Button>
</ButtonToolbar>
)}
</Form>
</div>);
}
}
export default UserCreateEdit;