我正在使用前端的React构建RESTful Flask API。
我希望能够使用React来获取和上传数据,但是首先要在Flask的服务器端渲染我的Jinja模板。这是我到目前为止的内容:
反应
Seeds.jsx
import React, { Component } from 'react';
import axios from 'axios';
class Seeds extends Component{
constructor (props) {
super(props);
this.state = {
restaurant:'',
email: '',
id: '',
username: '',
active: '',
admin: ''
};
};
componentDidMount() {
if (this.props.isAuthenticated) {
this.getSeeds();
}
};
getSeeds(event) {
const options = {
url: `${process.env.REACT_APP_WEB_SERVICE_URL}/seeds`,
method: 'get',
headers: {
'Content-Type': 'application/json',
Authorization: `Bearer ${window.localStorage.authToken}`
}
};
return axios(options)
.then((res) => {
console.log(res)
console.log(res.data.data)
this.setState({
restaurant: res.data.data[0].restaurant,
template: res.data.data[0].content
})
})
.catch((error) => { console.log(error); });
};
render(){
let seeds_page;
seeds_page = this.setState.template;
return (
<div className="form">
{seeds_page}
</div>
);
}
}
export default Seeds;
烧瓶
seeds.py
seeds_bp = Blueprint('seeds',
__name__,
template_folder='templates',
static_url_path='static')
@seeds_bp.route('/seeds', methods=['GET', 'POST'])
def seeds():
user = User.query.filter_by(id=1).first()
response_object = {
'status': 'success',
'message': 'success',
'data': [{"user": user.restaurant,
"content": "seeds.html"}]
}
return jsonify(response_object), 200
Jinja
seeds.html
{% include 'partials/head.html' %}
<section id="woz-content" >
<div class="container">
<h1 class="page-title">Menu(edit)</h1>
</div>
<div class="container">
<h2 class="page-title">Seeds</h2>
<ul style="list-style:none" >
<li><form action="{{ url_for('seeds.handle_seeds') }}"method="post">Seed1
<input type="text" name="seed1"/>
<label style="font-size: 11px;"></label>
<input type="submit" value="seed" >
</form>
</li>
<li><form action="{{ url_for('seeds.handle_seeds') }}" method="post">Seed2
<input type="text" name="seed2"/>
<label style="font-size: 11px;"></label>
<input type="submit" value="seed" >
</form></li>
</ul>
</div>
我设法获取数据,但未进行任何渲染。
如何调整代码以在获取数据时呈现模板?
答案 0 :(得分:0)
我假设您想在react组件中呈现seed.html,因为您在react组件中包含以下代码:
render(){
let seeds_page;
seeds_page = this.setState.template;
return (
<div className="form">
{seeds_page}
</div>
);
}
要实现此操作,您需要确保您的seed.html文件具有与JSX相同的语法。例如,此代码在您的react组件中不起作用:
<h1 class='title'>Some title</h1>
因为react使用className而不是class。因此,您需要重写您的seed.html以使其类似于JSX语法,或者找到react模块可以将html模板解析为JSX代码。它将类似于:
{% include 'partials/head.html' %}
<section id="woz-content" >
<div className="container">
<h1 className="page-title">Menu(edit)</h1>
</div>
...
</section>
然后,您可以使用render_template函数渲染模板:
from flask import render_template
@seeds_bp.route('/seeds', methods=['GET', 'POST'])
def seeds():
user = User.query.filter_by(id=1).first()
example = "some example"
template = render_template('seeds.html', example=example)
response_object = {
'status': 'success',
'message': 'success',
'data': [{"user": user.restaurant,
"content": template}]
}
return jsonify(response_object)
然后,您可以通过axios请求获取模板并保存为模板状态。要将模板字符串转换为react组件,可以使用React HTML Parser实用程序将HTML字符串转换为React组件。 因此Seeds.jsx将类似于以下内容:
import ReactHtmlParser, { processNodes, convertNodeToElement, htmlparser2 }
from 'react-html-parser';
class Seeds extends Component{
// ...
render(){
seeds_page = this.state.template;
return (
<div className="form">
{ ReactHtmlParser(seeds_page) }
</div>
);
}
}
export default Seeds;