Django and ajax request Method Not Allowed (POST)

I am getting Method Not Allowed (POST) when I send an ajax post. It doesn't even get to the first request.method == 'POST' validation.

I already checked everything I could think of and still I cannot figure out the error, probably something ridiculous. Already tried submitting the form directly through the 'action' attribute pointing to the same url, with the 'POST' method and I get the same error.

Any thoughts/suggestions?

My url:

url(r'^crear_familiar/$', familiar_create, name='crear_familiar'),

My ajax:

var url = "{% url 'crear_familiar' %}";
$.ajax({
    type: "POST",
    url: url,
    data: $("#familiarForm").serialize(),
    success: function (data) {
        console.log(data, 'SUCCESS');
        location.reload();
    },
    error: function (data) {
        console.log('ERROR', data);
    }
});

My view:

def familiar_create(request):
    if request.method == 'POST':
        familiar_form = FamiliarForm(request.POST, prefix='familiar')
        if familiar_form.is_valid():
            familiar = familiar_form.save(commit=False)

            familiar.save()
            message = 'Has creado un nuevo familiar'
            if request.POST['familiar_familia']:
                familia_id = request.POST['familiar_familia']
                familia = Familia.objects.get(id=familia_id)
                tipo_familiar_id = request.POST['fhf-tipo_familiar']
                tipo_familiar = TipoFamiliar.objects.get(id=tipo_familiar_id)

                familiar_assignment = FamiliaHasFamiliar(
                    familia=familia,
                    familiar=familiar,
                    tipo_familiar=tipo_familiar
                )

                familiar_assignment.save()

                message = 'Has creado un nuevo familiar y le has asignado una familia'
            status = 200

        else:
            message = 'Ocurrió un error al crear al familiar'
            status = 500

        return JsonResponse({'status': 'false', 'message': message},
                            status=status)
    else:
        print 'GET'
        return JsonResponse(
            {'status': 'false', 'message': 'Wrong request'},
            status=500
        )

Form:

<form id="familiarForm" method="POST" action="{% url 'crear_familiar' %}">
    {% csrf_token %}
    <input name="familiar_familia" value="{{ object.pk }}" hidden>
        <div class="row">
            <div class="col-md-6">
                <div class="form-group">
                    {{ familiar_form.nombre.label }}:
                    <span class="text-danger bold">*</span>
                    {{ familiar_form.nombre|add_class:"form-control required" }}
                </div>
            </div>

            <div class="col-md-6">
                <div class="form-group">
                    {{ familiar_form.apellidos.label }}:
                    <span class="text-danger bold">*</span>
                    {{ familiar_form.apellidos|add_class:"form-control required" }}
                </div>
            </div>
        </div>
    </form>
    <div class="text-right">
        <button id="saveFamiliar" type="submit" class="btn btn-primary" familiar_pk="0">
            Submit <i class="icon-arrow-right14 position-right"></i>
        </button>
    </div>

Finally found the error: Right before the url that was not working I had another one with a regex:

url(r'^(?P<pk>[-\w]+)/$', FamiliaDetailView.as_view(),
        name='detalle_familia')

Looks like this one acted up when I sent the one I actually needed but thought I was sending the wrong arguments/method. I thought it was actually using the one I needed because the request contained the 'correct' text for the url.

The fix was to modify it so the regex did not match any others after it:

url(r'^detalle/(?P<pk>[-\w]+)/$', FamiliaDetailView.as_view(),
        name='detalle_familia')