Monday, December 25, 2017

Using Select2 autocomplete with Django project does not work while fetching the data

In my Django project, I have a Search field. I used Select2 autocomplete with it. I needed to fetch the product_list from my Product model. So I created a rest API that returns the product in json formats.

Here is my rest API code:

class ProductSerializer(serializers.ModelSerializer):      class Meta:          model = ProductList          fields = ('product_id', 'product_name', 'product_image', 'product_available',                    'product_description')

class JSONResponse(HttpResponse):      def __init__(self, data, **kwargs):          content = JSONRenderer().render(data)          kwargs['content_type'] = 'application/json'          super(JSONResponse, self).__init__(content, **kwargs)      def list(request):      if request.method == 'GET':          products = ProductList.objects.filter(product_name__icontains=request.GET.get('q'))          serializer = ProductSerializer(products, many=True)          serializer_data =          customData = {'results': serializer_data}          return JSONResponse(customData)

Now in my html, in the javascript portion I used this code mentioned in this Select2 doc. The code I used, looks like this:


<script type="text/javascript">          $(document).ready(function() {              $('.js-data-example-ajax').select2({                  ajax: {                      url: "/",                      dataType: 'json',                      delay: 250,                      type: 'GET',                      data: function (params) {                          return{                              q: params.term, // search term                              page:                          };                      },                      processResults: function (data, params) {                 = || 1;                            return {                              results: data.results,                          };                      },                      cache: true                  },                  placeholder: 'Search for a product',                  escapeMarkup: function (markup) { return markup; }, // let our custom formatter work                  minimumInputLength: 1,                  templateResult: formatRepo,                  templateSelection: formatRepoSelection              });              function formatRepo (repo) {                  if (repo.loading) {                      return repo.text;                  }                    var markup = "<div class='select2-result-repository clearfix'>" +  {#                    "<div class='select2-result-repository__avatar'><img src='" + repo.owner.avatar_url + "' /></div>" +#}                      "<div class='select2-result-repository__meta'>" +                      "<div class='select2-result-repository__title'>" + repo.product_name + "</div>";                    if (repo.product_description) {                      markup += "<div class='select2-result-repository__description'>" + repo.product_description + "</div>";                  }                    return markup;              }                function formatRepoSelection (repo) {                  return repo.product_name || repo.text;              }          });      </script>

When I used Postman to check if the rest API works or not, it worked perfectly. For my query in the Postman like these:






The retrieved json data is given below for query localhost:8000/ :

{       "results":[          {             "product_id":9,           "product_name":"thomas",           "product_image":"/media/media/tom_dushtu.jpg",           "product_available":"available",           "product_description":"jah dushtu"        },        {             "product_id":8,           "product_name":"ami dissapointed",           "product_image":"/media/media/dissapointment.jpg",           "product_available":"available",           "product_description":"I ma kinda dissapointed, you know.................."        }     ]  }

Now with all those, I couldn't make it work. The autocomplete is not working. Nothing is shown when I press one key or write the name of the whole product.

Here is an image. It always has shown Searching.... I tried reading the issues on the Github repo and some other things but couldn't solve it.

What am I doing wrong?

You received this message because you are subscribed to the Google Groups "Django users" group.
To unsubscribe from this group and stop receiving emails from it, send an email to
To post to this group, send email to
Visit this group at
To view this discussion on the web visit
For more options, visit

No comments:

Post a Comment