How to send data between different routes in Flask

Code Help Python
1

Question:
da title. An example would be there’s a signup page, and when you finish da form it redirects you to another route where your account gets created. How do I do that?
(sorry for the unclear explanation, I got notifications about a fake virus few minutes ago)
Repl link:
no repl link or code (cause I’m just wondering how to do it)

2

for the purpose you provided in your original post, you would create a form using the <form> tag and a parameter that tells the browser to POST to an endpoint on your flask server that accepts POST requests.

1 Like
3

Umm… ok…

So can you provide an example?

4

File structure:

main.py
templates
| register.html

Python main.py:

from flask import Flask, render_template, request
app = Flask('app')

@app.route('/register')
  return render_template('register.html')

@app.route('/register/create', methods=['POST'])
  username = request.form['username']
  password = request.form['password']
  #account creation stuff goes here
  return 'Account created!'

app.run(host='0.0.0.0', port=8080)

HTML register.html:

<!DOCTYPE html>
<html lang="en">
  <head>
    <title>Create Account</title>
  </head>
  <body>
    <form action="/register/create" method="POST">
      <input type="username" name="username" placeholder="Username">
      <input type="password" name="password" placeholder="Password">
      <input type="submit" value="Signup">
    </form>
  </body>
</html>
1 Like
5

Can I do this without forms?

6

What do you mean by that?

7

Like maybe there’s 2 buttons, and the user has to choose one of them.

8

Try using a radio form element.

<p>Pick a color:</p>
<input type="radio" name="color" value="red"> Red
<input type="radio" name="color" value="green"> Green
<input type="radio" name="color" value="blue"> Blue
<input type="submit" value="Submit">
2 Likes
9

Shouldn’t this still be in a form?

Nope, that’s not how you use a decorator…

from flask import Flask, render_template, request

app = Flask(__name__)


@app.route('/register', methods=['GET', 'POST'])
def register():
    if request.method == 'GET': return render_template('register.html')
    
    username = request.form['username']
    password = request.form['password']
    # account creation stuff goes here
    return 'Account created!'


if __name__ == '__main__':
    app.run('0.0.0.0', 81)
1 Like
10

I could use args… (/route?arg1=val1&arg2=val2), but doesn’t that go in people’s history?

11

Yeah NEVER pass passwords in the URL. Why do you need to do it without forms anyway?

1 Like
12

then what’s the HTML?

13

i just wrote this from memory without testing it.
(its also very late for me)

14

The action would just be /register

    <form action="/register" method="POST">
      <input type="username" name="username" placeholder="Username">
      <input type="password" name="password" placeholder="Password">
      <button type="submit">Create account</button>
    </form>

same

ok it’s only 10pm for me

1 Like
16

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