Connecting python script into HTML with flask

Piqurs · (This post was last modified: Sep-05-2018, 09:35 AM by Piqurs.)

Hello,

I'm currently working on a project and I need some help with flask since I'm a bit new to flask I dont know how to connect my python script into html.

Say, I have input_data.html and input_data.py how do I connect them with flask? When user input the sentence and click the button, my script (input_data.py) will process the input and display the output on text area below.

[Image: unknown.png]

Any help or guidance would be appreciated.

***snippsat*** · (This post was last modified: Sep-05-2018, 08:24 PM by snippsat.)

There are couple or more ways do do this.
when push Submit button on server request.form will get the text from input field.
Can send text back(redirect) to same page.
A other way is send back to same page with Ajax(that dos not reload the page).
A basic example.
app.py:

from flask import Flask, render_template, request, redirect, url_for
 
app = Flask(__name__)
@app.route('/')
def index():
   return render_template("index.html")

@app.route('/text', methods=['GET', 'POST'])
def text(comments=[]):
    if request.method == "GET":
        return render_template("index.html", comments=comments)    
    comments.append(request.form["text_input"])  
    return redirect(url_for('text'))

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

index.html:

<!doctype html>
<html>
<head>
  <title>Some title</title>
  <link rel=stylesheet type=text/css href="{{ url_for('static', filename='css/style.css') }}" />
</head>
<body>
  <h2>Form</h2>
  <form action="/text" method="post">
    Input text:<br>
    <input type="text" name="text_input" value="">
    <br>
    <input type="submit" value="Submit">
  </form>
  <div id='foo'>
    <br>
    {% for comment in comments %}
    <div class="row">
      {{ comment }} 
    </div>
    {% endfor %}
  </div>
</body>
</html>

So to server and send back to view.
A common way is to use jinja2 build into Flask to sent stuff to html {{ comment }}.
[Image: RmWrDq.jpg]

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Connecting python script into HTML with flask

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