How do I add a breakpoint to a JavaScriptCatalog view?

Question

As per the documentation for JavaScriptCatalog, I added the following lines to the urlpatterns in one of my Django apps:

from django.views.i18n import JavaScriptCatalog
from django.conf.urls import url

urlpatterns = [
    # ...
    url(r"^jsi18n/?", JavaScriptCatalog.as_view(), name="javascript-catalog"),
    # ...
]

But if I navigate to http://localhost/jsi18n, I see that it's not loading the catalog:

// ...
  /* gettext library */

  django.catalog = django.catalog || {};
  

  if (!django.jsi18n_initialized) {
// ...

How do I go about debugging this? How can I insert a breakpoint() into the JavaScriptCatalog.as_view() value to see what it's doing and where it's looking?

Answer 1

Subclass the original class, put a breakpoint() in its __init__ and then call super().__init__:

from django.views.i18n import JavaScriptCatalog
from django.conf.urls import url


class MyCatalog(JavaScriptCatalog):
    def __init__(self, *args, **kwargs):
        breakpoint()
        return super().__init__(*args, **kwargs)

urlpatterns = [
    # ...
    url(r"^jsi18n/?", MyCatalog.as_view(), name="javascript-catalog"),
    # ...
]

Or overwrite some other method, such as get_catalog:

class MyCatalog(JavaScriptCatalog):
    def get_catalog(self, *args, **kwargs):
        breakpoint()
        return super().get_catalog(*args, **kwargs)