How do I get the class of a object within a Django template?

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夕颜
夕颜 2021-02-12 16:58

If I have a list of objects that require similar layouts but need some attribute set based on the class of object how can I go about getting the class name while class

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  • 2021-02-12 17:17

    A little dirty solution

    If objects is a QuerySet that belong to a model, you can add a custom method to your model.

     class mymodel(models.Model):
         foo = models........
    
    
     def get_cname(self):
        class_name = ....
        return class_name 
    

    then in your template you can try:

    {% for obj in objects %}
       <div class="{{obj.get_cname}}">
         ..
      </div>
    {% endfor }}
    
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  • 2021-02-12 17:17

    You can also write a custom filter. My use case was to check whether or not an html element in a Django form was a checkbox. This code has been tested with Django 1.4.

    I followed the instructions about Custom Filters. My filter code looks as such.

    In myapp/templatetags/class_tag.py:

    from django import template
    register = template.Library()
    @register.filter(name='get_class')
    def get_class(value):
      return value.__class__.__name__
    

    In your template file:

    {% load class_tag %}
    
    {% if Object|get_class == 'AClassName' %}
     do something
    {% endif %}
    
    
    {{ Object|get_class }}
    
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  • 2021-02-12 17:26

    David's suggestion of a custom filter is great if you need this for several classes.

    The Django docs neglect to mention that the dev server won't detect new templatetags automatically, however, so until I restarted it by hand I was stuck with a TemplateSyntaxError class_tag is not a registered tag library.

    .

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  • 2021-02-12 17:27

    a bit simpler; assuming your layout is a list of a single model:

    class ObjectListView(ListView):
        model = Person
        template_name = 'object_list.html'
    
        def model_name(self):
            return self.model._meta.verbose_name
    

    Then in object_list.html:

    {% for obj in object_list %}
        <div class="{{view.model_name}}">...</div>
    {% endfor }}
    
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