3

I have a Flask app I'm building and I'm having issues accessing my jinja2 globals variables from within my templates, any idea as to what I'm doing wrong here?

__init__.py

from config import *

...

#Initialize Flask App
app = Flask(__name__)

#Jinja2 global variables
jinja_environ = app.create_jinja_environment()
jinja_environ.globals['DANISH_LOGO_FILE'] = DANISH_LOGO_FILE
jinja_environ.globals['TEMPLATE_MEDIA_FOLDER'] = TEMPLATE_MEDIA_FOLDER

...

config.py

...

TEMPLATE_MEDIA_FOLDER = '../static/img/media_library/' #This is the location of the media_library relative to the templates directory
DANISH_LOGO_FILE = '100danish_logo.png'

...

example template

<p>{{ TEMPLATE_MEDIA_FOLDER }}</p>

In this instance, TEMPLATE_MEDIA_FOLDER prints out nothing to the template.

Joey Orlando
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2 Answers2

13

I'm going to assume you are using Flask's render_template function here which is by default linked to the application's jinja_env attribute.

So try something like this,

app = Flask(__name__)
app.jinja_env.globals['DANISH_LOGO_FILE'] = DANISH_LOGO_FILE
app.jinja_env.globals['TEMPLATE_MEDIA_FOLDER'] = TEMPLATE_MEDIA_FOLDER
Jared
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5

The accepted answer works, but it gave me the pylint error 

[pylint] E1101:Method 'jinja_env' has no 'globals' member

Do it this way to avoid the error:

app = Flask(__name__)
app.add_template_global(name='DANISH_LOGO_FILE', f=DANISH_LOGO_FILE)
Sam Arthur Gillam
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