Jinja2 has an extension that enables the with keyword – it won’t give you the same syntax as Django, and it may not work the way you anticipate but you could do this: {% with articles=articles_list1 %} {% include “list.html” %} {% endwith %} {% with articles=articles_list2 %} {% include “list.html” %} {% endwith %} … Read more
The counter variable inside the loop is called loop.index in Jinja2. >>> from jinja2 import Template >>> s = “{% for element in elements %}{{loop.index}} {% endfor %}” >>> Template(s).render(elements=[“a”, “b”, “c”, “d”]) 1 2 3 4 In addition to loop.index, there is also loop.index0 (index starting at 0) loop.revindex (reverse index; ending at 1) … Read more
The Flask Jinja2 documentation covers this pretty well. The first example under the “Standard Filters” section shows exactly how to embed a JSON object from python into a Javascript script: <script type=text/javascript> doSomethingWith({{ user.username|tojson|safe }}); </script> So in this case: var lat_lng = {{ lat_lng|tojson|safe }}; tojson calls dumps on the data, so you should … Read more
Option 1 You can have the category name defined as Form parameter in the backend, and submit a POST request from the frontend using an HTML <form>, as described in Method 1 of this answer. app.py from fastapi import FastAPI, Form, Request from fastapi.responses import HTMLResponse from fastapi.templating import Jinja2Templates app = FastAPI() templates = … Read more
Jinja is a dependency of Flask and Flask V1.X.X uses the escape module from Jinja, however recently support for the escape module was dropped in newer versions of Jinja. To fix this issue, simply update to the newer version of Flask V2.X.X in your requirements.txt where Flask no longer uses the escape module from Jinja. … Read more
Try also dictionary-based approach. It seems to be less ugly. {% set vars = {‘foo’: False} %} {% for item in items %} {% if vars.update({‘foo’: True}) %} {% endif %} {% if vars.foo %} Ok(1)! {% endif %} {% endfor %} {% if vars.foo %} Ok(2)! {% endif %} This also renders: Ok(1)! Ok(2)!
I assume your Flaskobject’s name is app (i.e., app = Flask(__name__)). Place the below code right after the app is initialized. @app.context_processor def inject_stage_and_region(): return dict(stage=”alpha”, region=”NA”) In your Jinja templates, “alpha”and “NA” can be referenced by {{ stage }} and {{ region }}. Flask docs: http://flask.pocoo.org/docs/0.12/templating/#context-processors To inject new variables automatically into the context … Read more
I modified the get accordingly. Setting the content type did the trick. from flask import render_template, make_response class AppointmentController(Resource): def __init__(self): pass def get(self): headers = {‘Content-Type’: ‘text/html’} return make_response(render_template(‘index.html’),200, headers)
As the import error comes from flask File “/usr/local/lib/python3.7/site-packages/flask/__init__.py I tried to create a new Flask application using Flask==1.0.2 and found that the error comes from this version of Flask when it used with Jinja2>=2.10.1. But when you remove Flask==1.0.2 and install Flask==2.0.3, everything works fine. pip uninstall Flask Jinja2 pip install Flask Jinja2 Dependencies … Read more
Since no one has answered the question and I found the answer from jinja2 import Environment, PackageLoader, meta env = Environment(loader=PackageLoader(‘gummi’, ‘templates’)) template_source = env.loader.get_source(env, ‘page_content.html’) parsed_content = env.parse(template_source) meta.find_undeclared_variables(parsed_content) This will yield list of undeclared variables since this is not executed at run time, it will yield list of all variables. Note: This will … Read more