On Tuesday, April 5, 2011 9:43:48 PM UTC+1, Roy Smith wrote:
>
> I'm using django-1.3 . I have a view with the following code:
>
> def item_create(request):
> if request.method == 'POST':
> form = ItemForm(request.POST)
> if form.is_valid():
> url = form.cleaned_data['url']
> item.save()
> return HttpResponseRedirect('/')
> else:
> print form.errors
>
> when I submit the form, I expected that form.errors would print out as
> a dict, as documented in
> http://docs.djangoproject.com/en/1.3/ref/forms/api/#using-forms-to-validate-data.
>
>
> Instead, I'm getting a hunk of HTML:
>
>
> Django version 1.3, using settings 'soco-site.settings'
> Development server is running at http://0.0.0.0:7626/
> Quit the server with CONTROL-C.
> <ul class="errorlist"><li>date_added<ul class="errorlist"><li>This
> field is required.</li></ul></li><li>user_id<ul
> class="errorlist"><li>This field is required.</li></ul></li></ul>
> [05/Apr/2011 16:36:32] "POST /item/create/ HTTP/1.1" 200 718
>
> Is my understanding wrong, or is this a bug?
>
To coin a phrase, it's not a bug - it's a feature.
form.errors is actually an instance of a custom class, ErrorDict, which is
defined in django.forms.util. It subclasses dict, so it works exactly the
same as a dictionary when you set and access its members - but it also
defines a custom __unicode__ method, which is called automatically when you
`print` it, which converts the contents to HTML. This is so you get a
nicely-formatted output in your template.
--
DR.
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