Question

My form code:

class PlanForm(forms.Form):
    a = forms.CharField(widget=forms.TextInput(attrs={"class", "add-up"}))
    b = forms.CharField(widget=forms.TextInput(attrs={"class", "add-up"}))

    class Media:
        javascript=('test.js', )

My View Code:

def plan_detail(request):
    if request.method == "POST":
        return render(request=request,
                  template_name='pasteur/plan_detail.html',
                      dictionary={ 'message': 'This was a post request. WTF!' })
    else:
        return render(request=request,
                  template_name='pasteur/plan_detail.html',
                      dictionary={ 'form': PlanForm() })

Stack Trace:

environment:

Request Method: GET Request URL:

Django Version: 1.4 Python Version: 2.7.2 Installed Applications:
(‘django.contrib.auth’, ‘django.contrib.contenttypes’,
‘django.contrib.sessions’, ‘django.contrib.sites’,
‘django.contrib.messages’, ‘django.contrib.staticfiles’,
‘django.contrib.admin’, ‘django.contrib.admindocs’, ‘south’,
‘pasteur’) Installed Middleware:
(‘django.middleware.common.CommonMiddleware’,
‘django.contrib.sessions.middleware.SessionMiddleware’,
‘django.middleware.csrf.CsrfViewMiddleware’,
‘django.contrib.auth.middleware.AuthenticationMiddleware’,
‘django.contrib.messages.middleware.MessageMiddleware’)

Template error: In template
/Users/judithjacques/dana/dev/pasteur/src/pasteur/templates/pasteur/plan_detail.html,
error at line 8 ‘set’ object has no attribute ‘get’ 1 :

Traceback: File
“/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/core/handlers/base.py”
in get_response
111. response = callback(request, *callback_args, **callback_kwargs) File “/Users/judithjacques/dana/dev/pasteur/src/pasteur/views.py” in
plan_detail
13. dictionary={ ‘form’: form }) File “/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/shortcuts/init.py”
in render
44. return HttpResponse(loader.render_to_string(*args, **kwargs), File “/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/template/loader.py”
in render_to_string
176. return t.render(context_instance) File “/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/template/base.py”
in render
140. return self._render(context) File “/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/template/base.py”
in _render
134. return self.nodelist.render(context) File “/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/template/base.py”
in render
823. bit = self.render_node(node, context) File “/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/template/debug.py”
in render_node
74. return node.render(context) File “/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/template/defaulttags.py”
in render
281. return nodelist.render(context) File “/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/template/base.py”
in render
823. bit = self.render_node(node, context) File “/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/template/debug.py”
in render_node
74. return node.render(context) File “/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/template/debug.py”
in render
84. output = self.filter_expression.resolve(context) File
“/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/template/base.py”
in resolve
571. obj = self.var.resolve(context) File “/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/template/base.py”
in resolve
721. value = self._resolve_lookup(context) File “/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/template/base.py”
in _resolve_lookup
772. current = current() File “/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/forms/forms.py”
in as_ul
229. errors_on_separate_row = False) File “/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/forms/forms.py”
in _html_output
171. label = bf.label_tag(label) or ” File “/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/forms/forms.py”
in label_tag
508. id_ = widget.attrs.get(‘id’) or self.auto_id

Exception Type: AttributeError at /pasteur/plan/create/ Exception
Value: ‘set’ object has no attribute ‘get’

Answer 1

As the error says, {"class", "add-up"} is a set. You need a dictionary: {"class": "add-up"}.