CODEWITHSUNDEEP
django
Coveraver
Coveraver

Reputation: 159

Get related field in django template

I have two models:

class Button(models.Model):
    title = models.CharField(max_length=100,)
    anchor = models.ForeignKey(Section, on_delete=models.CASCADE, 
                   related_name='anchor', blank=True, null=True,)

class Section(models.Model):
    ...
    transliterate_name = models.CharField(max_length=100, blank=True, 
                                                           null=True)

Now I wanna to get transliterate_name in my template. I use this field as id to article. And i want to assign it to the button id in navigation menu. There is my template:

<ul class="navbar-nav">
        {% for menu_btn in menu_buttons %}
            <li class="nav-item">
                <a href="#{{ ??? }}" class="nav-link">
                     {{ menu_btn.title }}
                </a>
            </li>
        {% endfor %}
    </ul>

in my views:

class SectionView(ListView):
    queryset = Section.objects.filter(name_visible=True)
    context_object_name = 'sections'
    extra_context = {
        'articles': Article.objects.all(),
        'menu_buttons': Buttons.objects.all(),
    }

    template_name = 'sections/sections.html'

Any advise please.

Upvotes: 2

Views: 1042

Answers (1)

willeM_ Van Onsem
willeM_ Van Onsem

Reputation: 476614

You can obtain the related Section object, by fetching the anchor attribute:

<a href="#{{ menu_btn.anchor.transliterate_name }}" class="nav-link">

Since you will fetch the related attribute of every Button object, it it better to fetch all these Sections in one fetch with .select_related(..):

class SectionView(ListView):
    queryset = Section.objects.filter(name_visible=True)
    context_object_name = 'sections'
    extra_context = {
        'articles': Article.objects.all(),
        'menu_buttons': Buttons.objects.select_related('anchor').all(),
    }

    template_name = 'sections/sections.html'

Upvotes: 1

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