How to dynamically select template directory to be used in flask?

Question

By default flask uses template files stored in \"template\" directory :

/flaskapp
    /application.py
    /templates
        /hello.html

Is

Answer 1

I'm new to Python, but I have already faced with this problem. I don't know if my solution is right, but it works:

First of all you have to create module for each user

/flaskapp
    /application.py
    /templates (default template goes here)
        __init__.py     # default module flaskapp
        views.py        # here you can define methods for default module (like Action in MVC)
        /hello.html
    /static
    /userdata
        /user1
            __init__.py # user1 module
            views.py    # here you can define methods for user1 module
            /template1
                 hello.html
            /template2
                 hello.html
        /user2
            __init__.py # user2 module
            views.py    # here you can define methods for user2 module
            /template1
                 hello.html
            /template2
                 hello.html              

in application.py init Flask app, add global method render_page_from and register blueprints

app = Flask(__name__)
def render_page_from(controller_name, template_name_or_list, **context):
    # here you can choose any controller or use default
    app.jinja_loader.searchpath.clear()
    blueprint = app.blueprints[controller_name]
    app.jinja_loader.searchpath.append(blueprint.template_folder)
    return render_template(template_name_or_list, context=context)

from flaskapp.user1 import controller as user1_controller
from flaskapp.user2 import controller as user2_controller

app.register_blueprint(user1_controller)
app.register_blueprint(user2_controller)

in each module (user1, user2 etc) init blueprint in init.py

templates_folder = os.path.join(os.path.dirname(os.path.abspath(__file__)), 'templates')

controller = Blueprint('user1', __name__, url_prefix='/user1', template_folder = templates_folder)

import flaskapp.user1.views

finally add view (action) methods to views.py like this

from LocalHub.client import controller
@controller.route('/hello')
def hello():
    """Renders the page"""
    return render_page_from(controller.name, 'hello.html', title='hello')