Question

I am trying to compare the length of a dictionary inside a django template

For example, I would like to know the correct syntax to do the following:

    {% if error_messages %}         <div class='error'>             {% if length(error_messages) > 1 %}                 Please fix the following errors:                 <div class='erroritem'>                     {% for key, value in error_messages.items %}                         <br>{{ value }}                     {% endfor %}                 </div>              {% else %}                     {% for key, value in error_messages.items %}                         {{ value }}                     {% endfor %}             {% endif %}         </div>     {% endif %} 

Answer 1

You could do this, using the length filter and the ifequal tag:

{% if error_messages %}     <div class='error'>         {% ifequal error_messages|length 1 %}             error_messages[0]         {% else %}             Please fix the following errors:             <div class='erroritem'>             {% for key, value in error_messages.items %}                 <br>{{ value }}             {% endfor %}             </div>         {% endifequal %}     </div> {% endif %} 

Anything else will have to go down the path of custom tags and filters.