javascript - Django Select2 Autocomplete: How to Pass Extra Parameter (argId) to the View? - Stack Overflow

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I'm using Django with django-autocomplete-light and Select2 to create an autocomplete field. The Select2 field is dynamically added to the page when another field is selected. It fetches data from a Django autocomplete view, and everything works fine.

Now, I need to filter the queryset in my autocomplete view based on an extra parameter (argId). However, I'm not sure how to pass this parameter correctly.

JavaScript (Select2 Initialization)

function getElement(argId) {
  let elementSelect = $("<select></select>");
  let elementDiv = $(`<div id='element_id' style='text-align: center'></div>`);
  elementDiv.append(elementSelect);

  $(elementSelect).select2({
      ajax: {
          url: "/myautocomplete/class",
          data: function (params) {
              return {
                  q: params.term,  // Search term
                  arg_id: argId    // Pass extra parameter
              };
          },
          processResults: function (data) {
              return {
                  results: data.results  // Ensure correct format
              };
          }
      },
      placeholder: "Element...",
      minimumInputLength: 3
  });

  return elementDiv; 

}

Django Autocomplete View

class ElementAutocomplete(LoginRequiredMixin, autocomplete.Select2QuerySetView):

      def get_queryset(self):
          qs = MyModel.objects.filter(...)

I want to pass argId from JavaScript to the Django view so that the queryset is filtered accordingly. However, I am not sure if my approach is correct or how to achieve this.

Appreciate any suggestions or improvements. Thanks!

I'm using Django with django-autocomplete-light and Select2 to create an autocomplete field. The Select2 field is dynamically added to the page when another field is selected. It fetches data from a Django autocomplete view, and everything works fine.

Now, I need to filter the queryset in my autocomplete view based on an extra parameter (argId). However, I'm not sure how to pass this parameter correctly.

JavaScript (Select2 Initialization)

function getElement(argId) {
  let elementSelect = $("<select></select>");
  let elementDiv = $(`<div id='element_id' style='text-align: center'></div>`);
  elementDiv.append(elementSelect);

  $(elementSelect).select2({
      ajax: {
          url: "/myautocomplete/class",
          data: function (params) {
              return {
                  q: params.term,  // Search term
                  arg_id: argId    // Pass extra parameter
              };
          },
          processResults: function (data) {
              return {
                  results: data.results  // Ensure correct format
              };
          }
      },
      placeholder: "Element...",
      minimumInputLength: 3
  });

  return elementDiv; 

}

Django Autocomplete View

class ElementAutocomplete(LoginRequiredMixin, autocomplete.Select2QuerySetView):

      def get_queryset(self):
          qs = MyModel.objects.filter(...)

I want to pass argId from JavaScript to the Django view so that the queryset is filtered accordingly. However, I am not sure if my approach is correct or how to achieve this.

Appreciate any suggestions or improvements. Thanks!

• javascript
• python
• django
• jquery-select2
• django-autocomplete-light

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2 Answers 2

Sorted by: Reset to default 1

Just pass them as query params /myautocomplete/class?title=title_1 and you can catch them in the class

class ElementAutocomplete(LoginRequiredMixin, autocomplete.Select2QuerySetView):

  def get_queryset(self):
      title = self.request.GET.get("title")
      qs = MyModel.objects.all()
      if title is not None:
           qs.filter(title__icontains=title)

Filter with:

class ElementAutocomplete(LoginRequiredMixin, autocomplete.Select2QuerySetView):

      def get_queryset(self, *args, **kwargs):
          qs = super().get_queryset(*args, **kwargs)
          _arg_id = self.request.GET.get('arg_id'):
          if _arg_id is not None:
              qs = qs.filter(some_field=_arg_id)
          return qs

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