Flask render_template() does not render the xhtml, but it renders correctly in my browser when I open it manually

Issue

I am trying to render xhtml (X3D) files. The Problem is that when rendering those through a flask route one xhtml template would work correctly and another one not. Both files work perfectly fine when I open them in my browser manually. The secound file is a modification of the first one using BeautifulSoup.

#flask app module
from flask import Flask, render_template

app = Flask(__name__)

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

@app.route('/xhtml')
def xhtml():
    return render_template('8b0e87efd5144053916a1cadfc9c5194.xhtml')

@app.route('/xhtml_2')
def xhtml_2():
    return render_template('920e053d8e474fc1869e9a2c763e9186.xhtml')

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

Is there something that I am missing about render_template()?

Working file: https://pastebin.com/qQi96Fcq

NOT working file: https://pastebin.com/HJiD9WTZ

Solution

Both files are very similar, because the secound file is just a modification of the first file using BeatifulSoup. I played around with the files and changed codeblocks step by step. I figured out, that BeautifulSoup changed

<Viewpoint ... ></Viewpoint>

to

<Viewpoint ... />

and jinja does not seem to like it. After changing those tags in the broken file it now gets rendered correctly:

<Viewpoint ... > </Viewpoint>

Even though noone could solve that Problem for me, I am still thankful for your input, as it got me thinking about my Problem more focussed.

Answered By – Aleksander Sadowski

This Answer collected from stackoverflow, is licensed under cc by-sa 2.5 , cc by-sa 3.0 and cc by-sa 4.0