Wsrtjtyk

I´m trying to show detail information of products within a Bootstrap modal in a Django app.

I´m taking this topic as reference: Stack Overflow question .

• The HTML is correctly calling the AJAX function


• The AJAX function is opening the modal


• The modal calls the URL

But I´m getting an 500 internal server error. The response is:

NoReverseMatch at /catalog/product-detail/

'system' is not a registered namespace

Any clue on what I´m doing wrong or any suggestion on how to achieve my abjective?

Thanks!

HTML - AJAX function call

<div class="row">

        {% for y in productos %}

            {% if y.categoria_producto|stringformat:"s" == objetivo %}

                    <button data-id="{{y.id}}" type="button" class="btn btn-warning margin-bottom delete-company" >delete</button>   

            {% endif %}

        {% endfor %}

        {% csrf_token %}

</div>

AJAX code

$(document).on('click','.delete-company',function(){

    var id = $(this).data('id');



    $.ajax({

        url:'/catalog/product-detail/',

        type:'POST',

        data:{

            'id':id,

            'csrfmiddlewaretoken': $('input[name=csrfmiddlewaretoken]').val(),

        },

        success:function(data){

            $('#modalQuickView .modal-dialog').html($('#modalQuickView .modal-dialog',data));

            $('#modalQuickView').modal('show');

        },

        error:function(){

            console.log('error')

        },

    });

});

HTML Modal

<div class="modal fade" id="modalQuickView" tabindex="-1" role="dialog" aria-labelledby="exampleModalLabel" aria-hidden="true">

<div class="modal-dialog modal-lg" role="document">

    <div class="modal-content">

        <div class="modal-body">

            <div class="row">

                <div class="col-lg-5">

                    <!--Carousel Wrapper-->

                    <div id="carousel-thumb" class="carousel slide carousel-fade carousel-thumbnails" data-ride="carousel">

                        <!--Slides-->

                        <div class="carousel-inner" role="listbox">

                            <div class="carousel-item active">

                                  <img class="d-block w-100" src="{% static 'img/Cinta1.jpg' %}" alt="Kinemed - ">

                            </div>

                            <div class="carousel-item">

                                  <img class="d-block w-100" src="{% static 'img/Cinta2.jpg' %}" alt="Kinemed - ">

                            </div>

                        </div>

                        <!--/.Slides-->

                        <!--Controls-->

                        <a class="carousel-control-prev" href="#carousel-thumb" role="button" data-slide="prev">

                            <span class="carousel-control-prev-icon" aria-hidden="true"></span>

                            <span class="sr-only">Previous</span>

                        </a>

                        <a class="carousel-control-next" href="#carousel-thumb" role="button" data-slide="next">

                            <span class="carousel-control-next-icon" aria-hidden="true"></span>

                            <span class="sr-only">Next</span>

                        </a>

                          <!--/.Controls-->

                    </div>

                    <!--/.Carousel Wrapper-->

                </div>

                <div class="col-lg-7" style="padding-left: 10px; margin-top: 1rem;">

                    {% if company %} <!-- this company instance will come from AJAX -->

                        <form method="post" action="{% url 'system:company_delete' id=company.id %}">

                        {% csrf_token %}

                            <div class="modal-content">

                                <div class="modal-body">

                                    <input type="text" name="name" maxlength="100" required="" id="id_name" value="{{ company.id }}">

                                    <input type="submit" class="btn btn-primary" value="Delete">

                                </div>

                            </div>

                        </form>

                    {% endif %}

                </div>

                <div style="padding-top: 1.5rem;">

                    <button type="button" class="btn btn-outline-info waves-effect ml-auto" data-dismiss="modal">Cerrar</button>

                </div>

            </div>

        </div>

    </div>

</div>

View

def companyListView(request):

    context = {}

    companys = ProductosBase.objects.all()

    if request.method == 'POST' and request.is_ajax():

        ID = request.POST.get('id')

        company = companys.get(id=ID) # So we send the company instance

        context['company'] = company

    context['companys'] = companys

    return render(request,'catalog/artista.html',context)

URL

url(r'^product-detail/$', views.companyListView, name="companyListView"),

I think the most important info about this problem would be in your project's urls.py file in which you included the catalog urls and used a namespace there. You gave this info in the comments. It looks like that you did not defined the app on the top of the catalog urls.py file, above the urlpatterns list and that is causing the problem. So check the following.

in catalog urls.py file:

app_name = 'system' # if your namespace is 'system.



urlpatterns = [

...]

If you give the namespace='catalog'

Then you should define that in your catalog urls.py file

app_name = 'catalog'

AN EASIER SOLUTION in this particular case:

Since this namespace does not have relevance yet in your project, then you should just delete the namespace='system' from you main urls.py file after include, so it should just look like this:

url(r'^catalog/', include('catalog.urls')),

(notice: it is better to use path() since url() will be deprecated most probably) so:

from django.urls import path



path('/catalog/', include('catalog.urls')),

And that way you can ignore my suggestion above (so you do not have to define any app anywhere) and your problem also should be solved.

Then a bit later as you proceed with your project you should study a bit more how and when to use namespaces for urls, since it's many times redundant.

And if still have problems with urls:

You can just define the url of the view in your main project urls.py file, just to see if the ajax call is received, so:

url(r'^catalog/product-detail/', views.companyListView, name='companylist'),

In this last case, do not forget to import the views in your main urls.py file too, otherwise it's also not working, so:

from catalog import views # in main urls.py file, if catalog is your app name

And finally, the main problem was an opening backslash /... in the AJAX call url (it caused a no Reverse Match error). So, the simple conclusion: if someone define an url in urlpatterns with opening backslash then in the ajax call it should be the same way, otherwise without opening backslash/. Well, yeah... to be continued...

UPDATE - SOLVING THE ORIGINAL QUESTION OF HOW TO PASS DATA TO HTML MODAL USING AJAX IN DJANGO

So, let's see. A lot of things were basically misunderstood here, I tried to clear that with a working approach. With using AJAx/jQuery/javascript, you actually bypass a big part of use of Django template tags/variables. That is the whole point of using jQuery/javascript.

First, I still suggest you to use path() and re-path() and not url() when you are defining urlpatterns in Django. url() will be deprecated as I mentioned above. And there are other important reasons to use path().

So your main urls.py should look something this:

# main project urls.py

from django.contrib import admin

from django.urls import include, path

from django.conf.urls import url



urlpatterns = [

    path('catalog/', include('catalog.urls')),

    path('admin/', admin.site.urls),

]

Your catalog urls.py should be like this:

# catalog urls.py

from django.conf.urls import url

from django.urls import include, path

from . import views



urlpatterns = [

    url(r'^$', views.index, name='index'),

]



urlpatterns += [

    url(r'^marcas/(?P<person_id>[dD]+)/$', views.MarcasView, name="marcas"),

    url(r'^categorias_productos/(?P<person_id>[dD]+)/$', views.CategoriasView, name="categoria"),

    url(r'^your-name/$', views.create_user, name="create_user"),

    path('product-detail/', views.companyListView, name="companylist"),

]

The javascript/ajax call and the response handling had to be structured again, and changed here and there. But again, the correct urls.py is also very important for the ajax call to work. And the view function too (I'll place it after the template).

This is at the bottom of base_generic.html template

{% block scripts %}



    <script>



        $(function(){

            $('.show_product').on('click', function (e) {

                e.preventDefault();

                let product_id = $(this).attr('id');



                $.ajax({

                    url:'/catalog/product-detail/',

                    type:'POST',

                    data: $('#form_have_product_'+product_id).serialize(),

                    success:function(response){

                        console.log(response);

                        $('.show_product').trigger("reset");

                        openModal(response);

                    },

                    error:function(){

                        console.log('something went wrong here');

                    },

                });

            });

        });



        function openModal(product_data){

          $('#product_name').text(product_data.company.producto);

          $('#marcas_name').text(product_data.marca);

          $('#category_name').text(product_data.categoria_producto_id);

          $('#sizes').text(product_data.company.largo);

          $('#color_name').text(product_data.company.color);

          $('#packaging').text(product_data.company.packaging);

          $('.description1 > p:eq(0)').html(product_data.company.descripcion);

          $('#product_target').text(product_data.usos);

          $('#modal_img_1').attr('src', '/static/img/'+product_data.company.foto_1 );

          $('#modal_img_2').attr('src', '/static/img/'+product_data.company.foto_2 );

          $('#modalQuickView').modal('show');

        };



    </script>



{% endblock %}

The template called artista.html had to be a bit reformulated.

{% extends "base_generic.html" %}



{% load static %}



{% block content %}



<!-- Productos por categoría -->



<!-- Modal: modalQuickView -->



<div class="modal fade" id="modalQuickView" tabindex="-1" role="dialog" aria-labelledby="exampleModalLabel"

  aria-hidden="true">

  <div class="modal-dialog modal-lg" role="document">

    <div class="modal-content">

      <div class="modal-body">

        <div class="row">

          <div class="col-lg-5">

            <!--Carousel Wrapper-->

            <div id="carousel-thumb" class="carousel slide carousel-fade carousel-thumbnails" data-ride="carousel">

              <!--Slides-->



                      <div class="carousel-inner" role="listbox">

                        <div class="carousel-item active">

                          <img id="modal_img_1" class="d-block w-100" src="{% static 'img/Cinta1.jpg' %}" alt="Kinemed - ">

                        </div>

                        <div class="carousel-item">

                          <img id="modal_img_2" class="d-block w-100" src="{% static 'img/Cinta2.jpg' %}" alt="Kinemed - ">

                        </div>



              </div>

              <!--/.Slides-->

              <!--Controls-->

              <a class="carousel-control-prev" href="#carousel-thumb" role="button" data-slide="prev">

                <span class="carousel-control-prev-icon" aria-hidden="true"></span>

                <span class="sr-only">Previous</span>

              </a>

              <a class="carousel-control-next" href="#carousel-thumb" role="button" data-slide="next">

                <span class="carousel-control-next-icon" aria-hidden="true"></span>

                <span class="sr-only">Next</span>

              </a>

              <!--/.Controls-->



            </div>

            <!--/.Carousel Wrapper-->



          </div>



          <!--This popup modal will be opened by the ajax call - Important-->



          <div class="col-lg-7" style="padding-left: 10px; margin-top: 1rem;">



              <h1 id="product_name">Product name</h1>

              <h3 id="marcas_name"><a href="" class="artist-style" style="color: #21518A; font-size: 1rem; margin-top: 1rem; padding-left: 0px;">SpiderTech</a></h3>

              <h4 id="category_name"><p class="artist-info" style="font-size: 1rem; color: black; padding-left: 0; margin-top: 0.5rem; margin-bottom: 5px;">Cintas kinesiológicas</p></h4>

              <h4 id="sizes"><p class="artist-info" style="font-size: 1rem; color: black; padding-left: 0; margin-top: 1rem; margin-bottom: 5px;">3,8 cms X 5,0 mts</p></h4>

              <h4 id="color_name"><p class="artist-info" style="font-size: 1rem; color: black; padding-left: 0; margin-top: 1rem; margin-bottom: 5px;">Beige</p></h4>

              <h4 id="packaging"><p class="artist-info" style="font-size: 1rem; color: black; padding-left: 0; margin-top: 1rem; margin-bottom: 5px;">Retail PET box</p></h4>

              <h4 id=""><p class="artist-info" style="font-size: 1rem; color: black; padding-left: 0; margin-top: 1rem; margin-bottom: 5px;"></p></h4>

              <div id="description1" class="description1" style="color: #21518A;">

                  <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.

                      Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris.</p>

                  <h6 id="product_target_label" style="color: black;">Usos: </h6>

                  <p id="product_target">Protección muscular, Recuperación</p>

              </div>



          </div>



            <div style="padding-top: 1.5rem;">

                     <button type="button" class="btn btn-outline-info waves-effect ml-auto" data-dismiss="modal">Cerrar</button>

            </div>

        </div>

      </div>

    </div>

  </div>

</div>



<!-- Fin Modal product detail -->



<!-- Productos por categoría -->



    {% for x in categorias %}



            {% if x.categoria_producto|stringformat:"s" == objetivo %}



                <div class="jumbotron" style="background-color: #1986E6">

                  <div class="container">

                    <div class="row">

                        <div class="barra" style="background-color: white;"></div>

                          <div class="col-12 text-center">

                              <h1 style="color: #FCFCFC">{{ objetivo }}</h1>

                          </div>



                            <div class="col-sm-12 col-md12 col-lg-12 col-xl-6 text-center" style="padding-top: 1rem;">

                              <h6 style="color: #FCFCFC">{{ x.descripcion_brief }}</h6>

                          </div>

                    </div>



                  <div style="padding-top: 1rem;">

                      <button type="button" class="btn btn-secondary btn-sm" data-toggle="collapse"

                               data-target="#demo"><i class="fas fa-info-circle"></i> Más información</button>

                  </div>





                  </div>



                <div class="container collapse" id="demo">

                    <div class="row" style="padding-top: 40px; padding-bottom: 20px;">

                        <div class="col-lg-6 col-lg-6-custom col-sm-12">

                                <div class="videoWrapper">

                                    <!-- Copy & Pasted from YouTube -->

                                    <iframe src="{{ x.video }}" width="640" height="360" frameborder="0" webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe>

                                </div>



                            <div class="row">

                                <div class="col-lg-6 col-md6 col-sm-6 col-xl-6 text-center">

                                   <img style="width: 100%; position: relative;" border="0"alt="{{ objetivo }}" src=" {{ x.foto_1.url }} " class="esconder">

                                  </div>



                                <div class="col-lg-6 col-md63 col-sm-6 col-xl-6 text-center">

                                    <img style="width: 100%; position: relative;" border="0" alt="{{ objetivo }}" src=" {{ x.foto_2.url }} " class="esconder">

                                </div>

                            </div>



                        </div>



                        <div class="col-lg-6 col-lg-6-custom col-sm-12">

                            <div class="texto-brief">

                                <p>{{ x.descripcion_long }}  </p>

                                <h6 style="color: white;">Usos</h6></br>

                                <p>{{ x.usos }}  </p>

                            </div>

                        </div>





                    </div>

                    <div style="padding-top: 1rem;">

                      <button type="button" class="btn btn-secondary btn-sm" data-toggle="collapse"

                               data-target="#demo"><i class="fas fa-info-circle"></i> Menos información</button>

                  </div>

                 </div>

            </div>



            {% endif %}

    {% endfor %}







<div class="jumbotron" style="background-color: white;">

     <div class="container">

          <div class="row">

            {% for y in productos %}

                {% if y.categoria_producto|stringformat:"s" == objetivo %}

                    <div class="col-sm-6 col-md-4 col-lg-2 col-xl-2 text-center" style="padding-bottom: 20px;">



                        <form name="form" action="#" id="form_have_product_{{y.id}}" method="POST">

                          {% csrf_token %}

                          <input name="id" id="product_id_submit" type="text" value="{{y.id}}" hidden="true"/>

                        <button id="{{y.id}}" "type="button" class="btn btn-warning margin-bottom show_product">Product details</button>

                        </form>

                         <!--<a id="" href="" data-toggle="modal" data-target="#modalQuickView"><img border="0" alt="W3Schools" src="{{ y.foto_1.url }}" class="artist-foto"></a> we don't need this-->

                           <div>

                            <a href="" id="{{y.id}}" data-id="{{y.id}}" class="artist-title show_product" style="color: black; padding-left: 0;" data-toggle="modal" >{{ y.producto }}</a> <!--data-target="#modalQuickView"-->

                        </div>

                        <div><a href="{% url 'marcas' person_id=y.marca %}" class="artist-style" style="color: #21518A; padding-left: 0;">{{ y.marca }}</a></div>

                        <div><p class="artist-info" style="color: #21518A; padding-left: 0; margin-bottom: 5px; margin-top: 5px;">{{ y.packaging }}</p></div>

                        <div><p class="artist-info" style="color: #21518A; padding-left: 0; margin-bottom: 5px;">{{ y.color }}</p></div>

                        <div><p class="artist-info" style="color: #21518A; padding-left: 0; margin-bottom: 5px;">{{ y.ancho }} cms. X {{ y.largo }} mts.</p></div>

                     </div>

                {% endif %}

            {% endfor %}



          </div>

     </div>

</div>



<div class="jumbotron" style="background-color: lightgrey;">

     <div class="container">

                 <div class="row">

                        <div class="barra" style="background-color: #21518A;"></div>

                          <div class="col-12 text-center">

                              <h1 style="color: #21518A">Más productos</h1>

                          </div>





                </div>



                  <div class="row" style="margin-top: 1rem;">

                      <div class="col-sm-12 col-md-12 col-lg-12 col-xl-12 text-center" style="padding-bottom: 20px;">

                        {% for z in categorias %}

                                {% if z.categoria_producto|stringformat:"s" != objetivo %}



                                    <h3><a  style="color: #21518A;" href=" {% url 'categoria' person_id=z.categoria_producto %} ">  {{ z.categoria_producto }}</a></h3>



                                {% endif %}

                        {% endfor %}

                      </div>

                  </div>

     </div>

</div>



{% endblock %}

And finally, one of the most important thing, the views.py file where we have the view which is handling the ajax call and giving back all of the products data which will be filled in the pop up modal at every product, using javascript/jQuery (that I gave above).

from django.shortcuts import render

from django.http import HttpResponseRedirect, HttpResponse, HttpRequest

from django.urls import reverse

from .models import ProductosBase, Marcas, Categorias_Producto

from .forms import FormularioContacto

from django.http import JsonResponse

import copy

import json

from django.forms.models import model_to_dict

from django.core import serializers



## other views functions are here.... ##



def companyListView(request):



    context = {}

    companys = ProductosBase.objects.values()

    context[companys] = ProductosBase.objects.all()



    if request.method == 'POST' and request.is_ajax():



        ID = request.POST.get('id')

        company = companys.get(pk=ID)  # So we send the company instance

        marca_name = ProductosBase.objects.get(pk=ID).marca # to have the related fields - marca

        marca_name = model_to_dict(marca_name) # better in dict

        marca_name = marca_name['marca'] # to define marca for the product

        usos_product = ProductosBase.objects.get(pk=ID).categoria_producto  # we need usos field from categories

        usos_product = model_to_dict(usos_product)

        usos_product = usos_product['usos']

        return JsonResponse({ 'company' : company, 'marca' : marca_name, 'usos' : usos_product })

    else:

        return render(request, 'catalog/artista.html', context)

And finally the visual which shows how the modal is working with any products providing all of the needed data to the clicked product:

So, you did a good job with your app, very nice basics and template work, but you should study more the role and power of jQuery/javascript in Django projects. They are really powerful together.

I hope that you will use and study the above codes and you can use it for your later projects too. Cheers. :)