---
title: "fastapi https url_for"
description: "!None"
date: 2024-03-24
published: true
tags:
  - dev
  - fastapi
  - python
  - thought
  - webdev
template: link
---


<!-- embed not found: None -->
![[None]]


jinja's `url_for` in fastapi does not account for https by default, there is
probably a better way, but this is a way that allows me to configure when I use
http vs https.

``` python
@pass_context
def https_url_for(context: dict, name: str, **path_params: Any) -> str:
    """
    always convert http to https
    """
    request = context["request"]
    http_url = request.url_for(name, **path_params)
    return str(http_url).replace("http", "https", 1)


def get_templates(config: BaseSettings) -> Jinja2Templates:
    templates = Jinja2Templates(directory="templates")
    templates.env.globals["https_url_for"] = https_url_for

    ## only use the default url_for for local development, for dev, qa, and prod use https
    if os.environ.get("ENV") in ["dev", "qa", "prod"]:
        templates.env.globals["url_for"] = https_url_for
        console.print("Using HTTPS")
    else:
        console.print("Using HTTP")

    return templates
```