Re: Loop over Django objects and Bootstrap cards

how to fetch image from database to template 

On Thu, 3 Jan 2019 at 19:28, valentin jungbluth <valentin.arue@gmail.com> wrote:

Hello guys,

I would like to use Bootstrap cards in order to create one card by object and add some sub_objects in each one.

For example :

I have an object Publication which could contain one or many sub_objects Document.

Publication object has some attributes : category, title, picture, description ...

Document object has some attributes like title, format, language, ...

I would like to get something like this :

For a same category, I create a card by publication and I list all documents for each publication.

This is what I get with my code :

As you can see, I should have document n°1 and document°2 in the same card and not two different cards.

This is my code :

   

{% for category in research_categories|dictsort:'name' %}
      <div class="row">
        <fieldset>
          <legend id="category_{{ category.id }}"><span class="name">{{ category }}</span></legend>
        </fieldset>
      </div>
   
        <div class="row">
          <div class="col-sm-4">
            {% for element in test_research %}
              {% if element.publication.category|stringformat:"s"  == category|stringformat:"s" %}
                {% ifchanged %}
                  <div class="card" style="width:250px">
                    <img class="card-img-top" src="{{ element.publication.cover.url }}" alt="Card image">
                    <div class="card-body">
                      <h4 class="card-title">{{ element.publication }}</h4>
   
                      <table class="table table-condensed">
                        <tbody>
                        <tr>
                          <td> {{ element.title }}</td>
                        </tr>
                        </tbody>
                      </table>
                    </div>
                  </div>
                {% endifchanged %}
              {% endif %}
            {% endfor %}
          </div>
        </div>
    {% endfor %}

And my view according to this part is :

   

 # By default, display documents
    test_research = Document.objects.all().order_by('publication__title', 'title', 'language', 'format')


    research_categories = defaultdict(list)
    for element in test_research:
        research_categories[element.publication.category].append(element)


    research_publications = defaultdict(list)
    for element in test_research:
        research_publications[element.publication].append(element)


    kwargs['test_research'] = test_research
    kwargs['research_categories'] = research_categories
    kwargs['research_publications'] = research_publications

How I can do that ?
Thank you !

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