Question

I am working on form validation with AJAX using Dajax in a Django project. I would like to know whether there is an efficiently way to display validation errors. For now, I return errors in the server-side when AJAX is called, and the client-side displays the errors using javascript.

# (if the form is not valid ...)

error_messages = []
# Display error messages.
for field in form:
    error_messages += field.errors

dajax.add_data({'msg':error_messages}, 'displayError')     
return dajax.json()

Is there any way to use django template tags to display errors using AJAX?

Answer 1

You can return html that represents these errors and just insert it using javascript, something like:

View

template = 'errors.html'
data = {
    'error_messages': error_messages,
}
return render_to_response(template, data,
    context_instance = RequestContext(request))

errors.html

<ul>
{% for message in error_messages %}
    <li>{{ message }}</li>
{% endfor %}
</ul>

Though I’m not a fan of this approach, I prefer separating data and presentation, and usually return only json.