return function output from text file to html flask

Question

How can I return the function text() with it's output to be viewed in html ?

my home.html in template folder:

<html>
<body>
  <h2>
    {% text() %}
  </h2>
</body>
</html>

my app.py in root folder:

from flask import Flask, render_template
import random

app = Flask(__name__)

def text():
    f = open('motivational.txt','r')
    text = f.readlines()
    return text[random.randrange(0,371)]

@app.route('/')
def home():
    return render_template("home.html")

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

error :

File "~/templates/home.html", line 494, in template
{% text() %}
jinja2.exceptions.TemplateSyntaxError: Encountered unknown tag 'text'.

thanks

jignatius · Accepted Answer · 2020-06-24 15:39:19Z

1

You can't call the function text() within your template. Hence the error. What you should do is pass the string returned by the function as a variable to the template.

home.html:

<html>
<body>
  <h2>
    {{text}}
  </h2>
</body>
</html>

app.py:

@app.route('/')
def home():
    txt = text()
    return render_template('home.html', text=txt)

answered Jun 24, 2020 at 15:39

jignatius

6,5442 gold badges19 silver badges37 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

return function output from text file to html flask

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related