loop for Jinj2 flask

Question

I have a loop 'for" in the template only I want it to show a certain amount result.

{% for form in form %}
    <tr>
       <td><img src="../static/img/arrow-gray.png" alt="">
       <font color="#e3068f"> IGLO{{ form.callsign }}</font></td>
       <td>{{ form.username  }} <b>{{ form.sobrename }}</b></td>
       <td>{{ form.last_seen }}</td>
    </tr>
{% endfor %}

if I use {{ for form in form }} it shows the result

Now if I put "{{ for form in range(2) }}" I only want to show 2 result, it shows nothing.

Answer 1

There are two basic errors in its application. The first one is in relation to the nomenclature of the variables. In the excerpt

{% for form in form %}

you are naming the variable that goes through the list form also of form. In this case, the correct way is to give a different name from the list for the iterator. An example would be:

{% for f in form %}

The other error is that you want to limit to two records only. In this case, you can actually iterate over the function range(), but now the list should be indexed on the entire index you are iterating.

{% for f in form %}
    <tr>
       <td><img src="../static/img/arrow-gray.png" alt="">
       <font color="#e3068f"> IGLO{{ f[i].callsign }}</font></td>
       <td>{{ f[i].username  }} <b>{{ f[i].sobrename }}</b></td>
       <td>{{ f[i].last_seen }}</td>
    </tr>
{% endfor %}

This way you are limiting correctly and showing the corresponding object at that position i of the list.