[Answered ]-For-loop implementation of a key for an object HTML

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If you write:

{{weather_object.variable }}

it aims to obtain the attribute named variable from the weather_object, and if that fails, it will try to use weather_object['variable']. The fact that there is a variable named variable does not matter. That would also be very unstable: imagine that you assign a variable named humidity = 'temp'. It would easily break the application since now all item.humiditys all of a sudden should use item.temp instead. That would be bad code design.

However a template should not implement business logic: it should only implement rendering logic. It is the view that needs to pass data in an accessible way to the view.

You for example can construct a list of lists for your weather_objects with:

variable_list = ['temp', 'humidity']
weather_data = [
    [getattr(datum, v) for v in variable_list]
    for datum in wheather_objects
  ]
context = {'weather_data': weather_data }

return render(
    request,
    'webapp/detail.html',
    context=context
)

and then render this as:

<table>
  {% for weather_object in weather_data %}
    <tr>
      {% for item in weather_object %}
          <td>{{ item }}</td>
      {% endfor %}
    </tr>
  {% endfor %}
</table>
👤willeM_ Van Onsem

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