Howdy Folks!
I'm very new to Django and have been experimenting with newforms. I
would be most grateful if anyone would care to take a look at this
small sample to see if I'm doing things in an efficient manner. It
works great, but I want to make sure I'm not doing something stupid..
:-) To shorten the following code snippets I've yanked out all
non-essential parts.
The following is for entering a new Customer or editing an existing
one.
Thanks very much for any insight or hints!
--gordon
************************************************************
From models.py:
************************************************************
class CustomerType(models.Model):
description = models.CharField(maxlength=32)
class Customer(models.Model):
name = models.CharField(maxlength=200)
customer_type=models.ForeignKey(CustomerType)
notes = models.TextField(blank=True,default="")
************************************************************
From forms.py:
************************************************************
class AddEditCustomerForm(forms.Form):
name = forms.CharField(max_length=200)
customer_type_id = forms.ChoiceField(label="Customer Type",
choices=[(c.id,c.description) for c in
CustomerType.objects.all()])
notes = forms.CharField(widget=forms.Textarea(attrs={'rows':
'3'}),required=False)
************************************************************
From views.py:
************************************************************
def add_edit_customer(request,object_id):
"""
Edit an existing customer (object_id > 0) or add a new one
(object_id == 0)
"""
object_id = int(object_id)
error_message = None
if request.method == "POST":
edit_form = AddEditCustomerForm(request.POST)
if edit_form.is_valid():
customer = Customer(**edit_form.clean_data)
if object_id > 0 : customer.id = object_id
if Customer.objects.filter(
name=customer.name,customer_type=customer.customer_type).exclude(
id=object_id).count() > 0:
error_message = "Duplicate customer."
else:
customer.save()
return HttpResponseRedirect("/kindledb/customers/%i/" %
customer.id)
elif object_id > 0:
edit_form =
AddEditCustomerForm(Customer.objects.get(id=object_id).__dict__)
else:
edit_form = AddEditCustomerForm()
return render_to_response("kindledb/add_edit_customer.html",
{"edit_form": edit_form, 'object_id': object_id,
'error_message': error_message})
************************************************************
Here is an extract from the template (add_edit_customer.html):
************************************************************
{% block content %}
{% if error_message %}
<p>{{error_message}}</p>
{% endif %}
<form method="POST" action=".">
<input type="hidden" name="object_id" value="{{object_id}}" />
<table class="edit_form">
{{edit_form}}
<tr><th></th><td><input type="submit" value="Save Changes"
/></td></tr>
</table>
</form>
{% endblock %}
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