python - Form with dynamic select inputs, ajax stops working? -


i have form 2 select inputs, retrieve data api. select depends on first input filter list of choices. form re-renders after receiving data first input via ajax request, form retrieves filtered list of choices api.

however, after re-rerendering form. if change first select field ajax request no longer working? looking @ browser dev tools shows ajax requests no longer being generated.
original script no longer execute after ajax request, jquery script still looks valid?

views.py

@require_http_methods(['get', 'head', 'post']) def current_service_view(request):     postcode = request.session.get('postcode', none)     service_type = request.session.get('service_type', none)     payment_method = request.session.get('payment_method', none)     form = currentserviceform(postcode, fuel_type, payment_method)     if request.is_ajax():         supplier_id = request.get.get('supplier', none)         form = currentserviceform(postcode, service_type, payment_method,                                  data=request.post,                                  supplier_id=supplier_id,                                  )         render(request, 'components/form.html', {'form': form})     if request.method == 'post':         form = currentserviceform(postcode, fuel_type, payment_method,                                  data=request.post,                                  )         if form.is_valid():             request.session.update(form.cleaned_data)             return redirect('users:usage')     return render(request, 'pages/signup_current_service_functional.html', {'form': form})

forms.py

class currentserviceform(forms.form):     postcode = forms.charfield(max_length=100)  # may not have in end.     supplier = forms.choicefield()     service = forms.charfield(max_length=100)       def __init__(self, postcode, service_type, payment_method, supplier_id=none, *args, **kwargs):         super().__init__(*args, **kwargs)         data = kwargs.get('data', none)     if data:         supplier_id = data.get('supplier')         region = get_region(postcode)         suppliers = get_suppliers(region, service_type,)         supplier_choices = [('', '---- please select current supplier ----')]         supplier in suppliers:             supplier_name = supplier['suppliername']             supplier_choices.append((supplier['supplierid'], supplier_name))          service_choices = [('', '---- please select current tariff ----')]         if supplier_id:             self.fields['supplier'].initial = supplier_id             services = get_supplier_services(supplier_id, region, service_type, payment_method)             service in services['data']['services']:                 service_name = service['servicename']                 service_choices.append((service_name, service_name))         self.fields['postcode'].initial = postcode         self.fields['supplier'].choices = supplier_choices         self.fields['service'].choices = tariff_choices         # crispy form used layout below         self.helper = formhelper(self)         self.helper.label_class = 'sr-only'  # using placeholders instead of labels         self.helper.form_tag = false         self.helper.layout = layout(             prependedtext('postcode', '<i class="fa fa-home"></i>', placeholder="postcode", autofocus=""),             field('supplier', ),             field('service',                   type="hidden"                   ),         )

template

{% extends "layout/focused_form_layout.html" %}  {% block inner %}    <p class="intro text-center">enter service details</p>   <div class="row">      {% include "components/form.html" %}    </div>   {% endblock %}  {% block inner_js %}    <script defer type="text/javascript">      $('#id_supplier').change(function () {       console.log($(this).val())       var supplier = $(this).val()        $.ajax({         url: '{% url 'users:current_supply' %}',         data: {           'supplier': supplier         },         {# datatype: 'json', #}         success: function (data) {           $('form').replacewith(data)         }       })     })    </script> {% endblock inner_js %}

form.html

{% load i18n %} {% load crispy_forms_tags %}   <form action="" method="post" enctype="multipart/form-data">{% csrf_token %}         {% crispy form %} <input id="signup-submit" class="btn btn-block btn-cta-primary" type="submit" value="{% trans "submit" %}"/> </form>


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