UdateView Issues

[Michael Martin]

I was looking into the generic views that existed and I hoping that this view would work for me.  I expect that the view will display current model as an editable form.  But I am having issues, I get some odd exception.  Can someone that has experience please help me?

UpdateView

class django.views.generic.edit.UpdateView

A view that displays a form for editing an existing object, redisplaying the form with validation errors (if there are any) and saving changes to the object. This uses a form automatically generated from the object’s model class (unless a form class is manually specified).

Ancestors (MRO)

This view inherits methods and attributes from the following views:

• django.views.generic.detail.SingleObjectTemplateResponseMixin
• django.views.generic.base.TemplateResponseMixin
• django.views.generic.edit.BaseUpdateView
• django.views.generic.edit.ModelFormMixin
• django.views.generic.edit.FormMixin
• django.views.generic.detail.SingleObjectMixin
• django.views.generic.edit.ProcessFormView
• django.views.generic.base.View

Attributes

template_name_suffix

The UpdateView page displayed to a GET request uses a template_name_suffix of '_form'. For example, changing this attribute to '_update_form' for a view updating objects for the example Author model would cause the default template_name to be 'myapp/author_update_form.html'.

object

When using UpdateView you have access to self.object, which is the object being updated.

Example myapp/views.py:

from django.views.generic.edit import UpdateView
from myapp.models import Author

class AuthorUpdate(UpdateView):
    model = Author
    fields = ['name']
    template_name_suffix = '_update_form'

Example myapp/author_update_form.html:

<form action="" method="post">{% csrf_token %}
    {{ form.as_p }}
    <input type="submit" value="Update" />
</form>

__init__() takes exactly 1 argument (2 given)

Request Method:	GET
Request URL:	http://127.0.0.1:8080/gateway/config/generalconfig/
Django Version:	1.7.1
Exception Type:	TypeError
Exception Value:	__init__() takes exactly 1 argument (2 given)
Exception Location:	C:\jython2.7b2\Lib\site-packages\django-1.7.1-py2.7.egg\django\core\handlers\base.py in get_response, line 111
Python Executable:	None
Python Version:	2.7.0
Python Path:	['C:\\Users\\mike\\workspace\\ciscoebondinggateway', 'C:\\Users\\mike\\workspace\\ciscoebondinggateway', 'C:\\Users\\mike\\workspace\\lwc\\lib\\postgresql-9.3-1102.jdbc41.jar', 'C:\\jython2.7b2\\Lib\\site-packages\\setuptools-5.7-py2.7.egg', 'C:\\jython2.7b2\\Lib\\site-packages\\pip-1.5.6-py2.7.egg', 'C:\\jython2.7b2\\Lib\\site-packages\\django_jython-1.7.0b2-py2.7.egg', 'C:\\jython2.7b2\\Lib\\site-packages', 'C:\\jython2.7b2\\Lib', 'C:\\Program Files (x86)\\Java\\jre7\\lib\\resources.jar', 'C:\\Program Files (x86)\\Java\\jre7\\lib\\rt.jar', 'C:\\Program Files (x86)\\Java\\jre7\\lib\\jsse.jar', 'C:\\Program Files (x86)\\Java\\jre7\\lib\\jce.jar', 'C:\\Program Files (x86)\\Java\\jre7\\lib\\charsets.jar', 'C:\\Program Files (x86)\\Java\\jre7\\lib\\jfr.jar', 'C:\\Program Files (x86)\\Java\\jre7\\lib\\ext\\access-bridge-32.jar', 'C:\\Program Files (x86)\\Java\\jre7\\lib\\ext\\dnsns.jar', 'C:\\Program Files (x86)\\Java\\jre7\\lib\\ext\\jaccess.jar', 'C:\\Program Files (x86)\\Java\\jre7\\lib\\ext\\localedata.jar', 'C:\\Program Files (x86)\\Java\\jre7\\lib\\ext\\sunec.jar', 'C:\\Program Files (x86)\\Java\\jre7\\lib\\ext\\sunjce_provider.jar', 'C:\\Program Files (x86)\\Java\\jre7\\lib\\ext\\sunmscapi.jar', 'C:\\Program Files (x86)\\Java\\jre7\\lib\\ext\\sunpkcs11.jar', 'C:\\Program Files (x86)\\Java\\jre7\\lib\\ext\\zipfs.jar', 'C:\\jython2.7b2\\Lib\\site-packages\\django-1.7.1-py2.7.egg', '__classpath__', '__pyclasspath__/']
Server time:	Wed, 17 Sep 2014 02:23:28 -0700

[Collin Anderson]

are you calling as_view() when installing your view in urls.py?

Could you post the rest of the traceback?

[Michael Martin]

Collin,

You are right I was missing the .as_view()

I am now getting an exception:

Exception Value:	Generic detail view GeneralConfigurationUpdate must be called with either an object pk or a slug.

I looked at the example here and I don't see anything mentioning setting up a slug.  I believe a slug is when a previous url redirects with a value attached such as (?P<pk>[0-9]+)

Does this mean that I have to create an additional view to pass the object that I am interested in?

On Wed, Sep 17, 2014 at 8:16 AM, Collin Anderson <cmawe...@gmail.com> wrote:

are you calling as_view() when installing your view in urls.py?

Could you post the rest of the traceback?

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[Lachlan Musicman]

Show us the URLs - the update url requires either a slug OR a pk - one is sufficient, so you don't need to set up a slug. But the update cbv can only be called from an object's url (the one that you would like to update) - it can't be called from just anywhere.

cheers
L.

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