Override netbox/templates/netbox/ipam/ipaddress_edit.html from a plugin

[marto1]

Hi,

I'm writing a simple plugin to auto pick IPs from certain ranges when creating a new IP. Specifically the /ipam/ip-addresses/add/ should have a small widget to do the picking.

I found out the PluginTemplateExtension interface insufficient as it only seems to provide a way for the details page to be extended. Can the netbox/templates/ipam/ipaddress_edit.html be overridden instead?

Reading from here https://django.readthedocs.io/en/stable/howto/overriding-templates.html I tried placing my own version in templates/ipam/ipaddress_edit.html and templates/netbox/ipam/ipaddress_edit.html in my plugin folder and loading that, but neither did anything.

Is there an official way to do that? If not, what would be the cleanest way of approaching this? Thanks.

Using netbox 4.4.0. Let me know if any more info is necessary.

[alehaa]

I believe you can’t replace existing forms or the templates used by their related views because they’re hard-coded. However, you can use a middleware to intercept specific requests and redirect them to a custom view instead. This custom view can then add additional logic.

from collections.abc import Callable

from django.http import HttpRequest, HttpResponse
from django.shortcuts import redirect
from django.urls import resolve


class RedirectMiddleware:
    def __init__(self, get_response: Callable) -> None:
        self.get_response = get_response

    def __call__(self, request: HttpRequest) -> HttpResponse:
        resolver_match = resolve(request.path_info)

        if resolver_match.view_name == "ipam:ipaddress_edit":
            return redirect('plugins:myplugin:myformview')

        return self.get_response(request)

Warning

Please note that this approach is extremely hacky and could break with each NetBox update.

[marto1]

Ok, looks like it works. Thanks for the swift response!