Form Update via Modal & HTMX

Hi Everyone! Long time lurker, the forums have been a great resource for me for the past 8 months as I have debugged my first Django project. I am currently building a website for a non-profit search and rescue team for free. However, I’ve now spent the last week trying to figure out an error that I haven’t been able to overcome.

The high level summary: I have a page that lists upcoming “Events”. Each event can have its details edited via a modal popup (pre-populates current event details). The modal shows/hides via alpine.hs, and htmx swaps the modal’s html to the necessary event to be edited. I keep running into a reverse lookup error when trying trying to implement the hx-post for the edited form.

I have seen similar errors referenced here and on stack overflow but all the situations/root causes didn’t seem like they applied here. I am sure there is probably a basic and simple thing that I am overlooking. I am trying to use carlton’s django-template-partials as well btw.

If anyone sees anything obvious that I am missing, please let me know. I find it very confusing that the template (for the modal & form) can render the but the hx-post=“{% url ‘update_event’ %}” receives an empty string.

Thank You!

The view

@login_required(redirect_field_name=LOGIN_URL, login_url=LOGIN_URL)
def update_event(request: HttpRequest, event_id: int):
    if not request.user.has_perm("members.change_event"):
        messages.error(request, "You do not have permission to update this event.")
        return redirect("all_events")
    siteinfo = SiteInfo.objects.get(id=1)
    event = Event.objects.get(pk=event_id)
    if request.method == "POST":
        form = EventForm(request.POST, instance=event)
        if form.is_valid():
            events = Event.objects.filter("date")
            context = {"siteinfo": siteinfo, "events": events}
            return render(request, "members/events/all_events.html#event_list", context)
        return render(request, "members/events/all_events.html#failure")

partial template (not the after Update Location is rendered before submitting)

{% partialdef edit_event_modal %}
<div class="flex items-center justify-center mb-6">
    <div class="flex flex-col items-center justify-center">
        <h1 class="text-xl font-bold">Update Location {{ }}</h1>
        {% if submitted %}
            Your location was updated succesfully!
        {% else %}
            <form hx-trigger="click:#event-edit-submit"
                  hx-post="{% url 'update_event' %}"
                {% csrf_token %}
                {{ form|crispy }}
                <div class="justify-center items-center flex">
                    <button id="event-edit-submit"
                            @click="showEditEventModal = false"
                            class="my-2 mb-3 me-2 ms-2 inline-flex w-1/2 flex-row items-center justify-center rounded-lg bg-misargreen px-2 py-2.5 text-center text-sm font-bold text-white  hover:bg-white hover:text-black focus:outline-none focus:ring-4 focus:ring-misargreen dark:bg-misargreen dark:hover:bg-white dark:hover:text-black dark:focus:ring-offset-black">
        {% endif %}
{% endpartialdef %}


    path("events/<int:event_id>/", views.update_event, name="update_event"),

Error message

Request Method: GET <--- why does it say GET and not POST?
Request URL:

Django Version: 5.0.6
Python Version: 3.10.10

Template error:
In template my-edited-out-path\members\templates\members\events\all_events.html, error at line 232
   Reverse for 'update_event' with arguments '('',)' not found. 1 pattern(s) tried: ['members/events/(?P<event_id>[0-9]+)/\\Z']
   222 : <div class="inline bg-red-200 p-2 border border-red-400 text-red-700 px-4 py-2">Event Not Successfully Updated!</div>
   223 : {% endpartialdef %}
   224 : {% partialdef edit_event_modal %}
   225 : <div class="flex items-center justify-center mb-6">
   226 :     <div class="flex flex-col items-center justify-center">
   227 :         <h1 class="text-xl font-bold">Update Location {{ }}</h1>
   228 :         {% if submitted %}
   229 :             Your location was updated succesfully!
   230 :         {% else %}
   231 :             <form hx-trigger="click:#event-edit-submit"
   232 :                   hx-post=" {% url 'update_event' %} "
   233 :                   hx-target="#event-list"
   234 :                   hx-vars="event_id={{ }}"
   235 :                   hx-swap="innerHTML">
   236 :                 {% csrf_token %}
   237 :                 {{ form|crispy }}
   238 :                 <div class="justify-center items-center flex">
   239 :                     <button id="event-edit-submit"
   240 :                             type="submit"
   241 :                             @click="showEditEventModal = false"
   242 :                             value="Submit"

.....Long traceback....

Exception Type: NoReverseMatch at /members/events/
Exception Value: Reverse for 'update_event' with arguments '('',)' not found. 1 pattern(s) tried: ['members/events/(?P<event_id>[0-9]+)/\\Z']

Update: Solved my issue…I was putting a {% partial edit-event-modal-body %} into the initial page html instead of a blank div. Because there was no items selected be edited with the form, there was nothing to be passed to the…/facepalm. Just wanted to update in case anyone comes looking for a similar issue, hopefully this helps you.