[FIXED] How do i pass a variable to all flask routes once?

Issue

So I have this Flask app that I need a pass a particular user to all routes as all pages in the app will be needing the particular user to render templates. I don't want to pass the user as it's normal done

return render_template('index.html',user=user)

Because I'd have to repeat the same thing for all routes in the render_templates. Please how can I do this?

Solution

You can do so by creating a custom render template function using the following implementation

from flask import render_template as real_render_template
from yourapp import user  # Import the user variable or set it

def render_template(*args, **kwargs):
    return real_render_template(*args, **kwargs, user=user)

it can also be done via functools.partial:

from flask import render_template as real_render_template
from yourapp import user  # Import the user variable or set it
from functools import partial

render_template = partial(real_render_template, user=user)

Answered By - xcodz-dot