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Cognito / Flask / React: how to log into backend?


Cognito / Flask / React: how to log into backend?

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Cognito / Flask / React: how to log into backend?
Tag : reactjs , By : phil
Date : November 29 2020, 04:01 AM

Any of those help I checked the code and the signIn function seems hard to extend, as it doesn't return anything so there's no point in using super and then because the resolving function isn't going to receive any data. That's why your logs are empty. To make use of it you'd need to essentially redefine it from scratch.
What you can do is reimplementing the changeState method itself, as in that case you can just call the parent method and then do whatever you want afterwards.
class MySignIn extends SignIn {
  showComponent(theme) {
    const signIn = this.props.hide.indexOf(SignIn)
    this.props.hide.splice(signIn, 1) // make sure SignIn is not hidden
    return super.showComponent(theme) // call showComponent from SignIn
  }
  changeState(state, data) {
    super.changeState(state, data)
    if (state !== 'signedIn') return
    console.log(data)
    // make the request to the backend
  }
}
function onStateChange(state, data) {
  if (state !== 'signedIn') return
  console.log(data)
  // do the request to the backend here
}
export default withAuthenticator(App, false, [
  <SignIn onStateChange={ onStateChange } />,
  // the rest

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Serving a 'create-react-app' made files with Flask backend


Tag : javascript , By : wraith
Date : March 29 2020, 07:55 AM
will help you When you finish the development process, you should run npm build it will create a new folder of static files, named build.
Then you can use any server to serve those static files.

react frontend connecting to flask backend Howto


Tag : javascript , By : Alpinfish
Date : March 29 2020, 07:55 AM
this one helps. I have tweaked your code a little bit. Changes I have made:
added the backend path http://localhost:5000/result in frontend as form action path. used request.args.get method to grab the submitted value.
import ReactDOM from 'react-dom';
import React, {Component} from 'react';
class Form1 extends Component{
    render(){
        return (
            <div class="form">
                <form action="http://localhost:5000/result" method="get">
                    Place: <input type="text" name="place"/>
                    <input type="submit" value="Submit"/>
                </form>
            </div>
        );
    }
}
ReactDOM.render(
    <Form1/>,
    document.getElementById('root')
);
from flask import Flask, request

app = Flask(__name__)

@app.route('/result', methods = ['GET', 'POST'])
def result():
    if request.method == 'GET':
        place = request.args.get('place', None)
        if place:
            return place
        return "No place information is given"

if __name__ == '__main__':
    app.run(debug = True)

how to start a project with react as front end and flask as backend?


Tag : reactjs , By : Mahyar Sepehr
Date : March 29 2020, 07:55 AM
I hope this helps . You will have to create rest services through flask and then make a request to fetch/insert the data through those services using react.

React frontend cannot POST to Flask backend


Tag : reactjs , By : Munir
Date : March 29 2020, 07:55 AM
should help you out As per your code, when you click submit button, its submitting form with browser submit action,
So it's hitting the browser base_url/handle_seeds, that's why it's throwing this error,
 <div id="parent">
           <div dangerouslySetInnerHTML={template}/>
            <form>
             <input type='text' name='name' onChange={this.handleChange}/><br/>
             <button type="button" onClick={this.handleSubmit} />
           </form>
 </div>

React axios GET null data from Flask backend


Tag : javascript , By : Ruchi
Date : March 29 2020, 07:55 AM
hop of those help? I have a react form in frontend where users can submit a question they wanna ask. Send the form data to flask server, using some NLP models to compute and get a result. Then return the result to the frontend.
const config = {
            headers: {'Access-Control-Allow-Origin': '*'}
        };

        axios.post('http://localhost:5000/api/newquestion', this.state, config)
        .then(response => {
            console.log(response)
            this.setState({questionResult: response.data,            isLoaded: true})
        })
        .catch(error => {
            console.log(error)
        })
@app.route("/api/newquestion", methods=['POST'])
@cross_origin(origin='*',headers=['Content-Type'])
def get_user_question():
    data = request.get_json()
    question = data['question']
    result = generate_text(question)
    return jsonify(result)
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