django view 'GET' does not work, 'POST' does work - django

Question

I have no Idea why, but if I try to 'GET' this view I get this error:
django.urls.exceptions.NoReverseMatch: Reverse for 'profile-update-name' with arguments '('',)' not found. 1 pattern(s) tried: ['ce_profiles/profile\\-update\\-name/(?P<pk>[0-9]+)/$']
But if submit a 'POST' request, everything is fine. ???
Here is the work flow:
First I access this view and template:
def customer_profile(request, pk):
name = get_object_or_404(CEName, id=pk)
return render(
request,
'customer/customer_profile.html',
{'profile_name': name}
)
{% block content %}
{% include 'ce_profiles/name_header.html' %}
<div id="name" class="container d-flex justify-content-between pt-1">
{% include 'ce_profiles/profile_name.html' %} <!-- displays the profile_name -->
<button id="update_button" action="{% url 'ce_profiles:profile-update-name' profile_name.id %}" class="bold btn btn-main btn-sm button-main">UPDATE</button>
</div>
<div id="div_NameForm" class="container">
</div>
{% endblock %}
{% block script %}
<script src="{% static 'ce_profiles/ce_profiles.js' %}"></script>
{% endblock %}
When I click the update button it should AJAX in the form to be modified. I've tried substitution of the variable to just a '1', but it still doesn't work. I have tests to verify that the view by itself doesn't work with the 'GET', but does with the 'POST', apart from the previous view.
urls.py
app_name='ce_profiles'
urlpatterns = [
path('profile-update-name/<int:pk>/', views.profile_update_name,
name='profile-update-name'
),
]
view
def profile_update_name(request, pk):
name = get_object_or_404(CEName, id=pk)
if request.POST:
name_form = NameForm(data=request.POST, instance=name)
if name_form.has_changed() == False:
name_form.add_error(None, _('No changes made.'))
if name_form.is_valid():
name_form.save()
updated_name = get_object_or_404(CEName, id=name.id)
profile_name_json = render_to_string(
'ce_profiles/profile_name.html',
{'profile_name': updated_name,}
)
return JsonResponse({'profile_name': profile_name_json})
else:
return JsonResponse({'error': name_form.errors})
else:
name_form = NameForm(instance=name)
get_NameForm_json = render_to_string(
'ce_profiles/update_NameForm.html',
{'NameForm': name_form}
)
return JsonResponse({'NameForm': get_NameForm_json})
Here is the template. Is something missing?
update_NameForm.html
<div id="div_NameForm" class="container">
<hr size="3px">
<form id="NameForm" method="POST" action="{% url 'ce_profiles:profile-update-name' profile_name.id %}">
{% csrf_token %}
{{ NameForm.as_p }}
<div id="NameForm_errors"></div>
<br>
<button id="save_changes" type="submit" class="btn btn-main button-main btn-block">Save Changes</button>
</form>
</div>

Answer 1

Instead of using render_to_string, you may use render(), and you forgot to send the variable profile_name: to the templates.
def profile_update_name(request, pk):
name = get_object_or_404(CEName, id=pk)
if request.POST:
''' code '''
# no need to use else statement
# since 'return' breaks the 'if request.POST' statement
name_form = NameForm(instance=name)
context = {
profile_name:name,
'NameForm': name_form,
}
return render(request,'ce_profiles/update_NameForm.html',context)
Note that you can you leave action='' empty in the form which will mean the same view
<form id="NameForm" method="POST" action="">