#9150: Generic views should accept arguements for form_class
---------------------------------------------+------------------------------
Reporter: erikcw | Owner: toabctl
Status: assigned | Milestone: 1.1
Component: Generic views | Version: 1.0
Resolution: | Keywords: generic views,
form_class, arguments
Stage: Design decision needed | Has_patch: 1
Needs_docs: 0 | Needs_tests: 0
Needs_better_patch: 0 |
---------------------------------------------+------------------------------
Changes (by toabctl):
* has_patch: 0 => 1
* milestone: => 1.1
Comment:
Attachment attachment:create_update.py.diff is a patch for this problem.
= how the patch works =
The Patch adds a new parameter for the create_object() method and
update_object() method. the new parameter is called '''form_params'''
(type is dict). it's now possible to pass parameters to the constructor of
the form.
= Example =
== models.py ==
{{{
class Project(models.Model):
"""
A Model which describe a Project
"""
name = models.CharField(max_length=200)
auth_group = models.ForeignKey('auth.Group')
def __unicode__(self):
return self.name
}}}
== forms.py ==
{{{
class ProjectForm(ModelForm):
"""
Form for a project
"""
def __init__(self, groups, *args, **kwargs):
super(ProjectForm, self).__init__(*args, **kwargs)
#set possible groups to the users groups
self.fields['auth_group'].queryset = groups
class Meta:
model = Project
}}}
ProjectForm needs as parameter the variable '''groups'''. This is normally
'''request.user.groups.all()'''.
== views.py ==
{{{
def project_new(request):
"""
A Form to create a new Project
"""
response = create_update.create_object(
request,
form_class = ProjectForm,
form_params = {'groups':request.user.groups.all(),},
template_name = 'project_form.html',
)
return response
def project_update(request, project_id):
"""
A Form to Update a Project
"""
response = create_update.update_object(
request,
form_class = ProjectForm,
form_params = {'groups':request.user.groups.all(),},
template_name = 'project_form.html',
object_id = int(project_id),
post_save_redirect = reverse('project-list')
)
#return response
}}}
in both methods, there is the var '''form_params''' passed.
== project_form.html ==
{{{
{% if form %}
<h1>{% trans "New Project" %}</h1>
<form action="." method="POST">
<table>
{{ form.as_table }}
</table>
<p><input type="submit" value="Submit"></p>
</form>
{% else %}
{% endif %}
}}}
--
Ticket URL: <http://code.djangoproject.com/ticket/9150#comment:5>
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