请问我的实现哪里出错了呢?
模型:
class Person(models.Model):
last_name = models.CharField(max_length=256)
first_name = models.CharField(max_length=256)
class Meta:
abstract = True
class Supplier(Person):
def __init__(self):
super(Supplier, self).__init__()
class Item(models.Model):
name = models.CharField(max_length=256)
supplier = models.ForeignKey(Supplier)
...
def __unicode__(self):
return self.name
视图:
def ItemNew(request):
if request.method == "POST":
post_item = ItemNewForm(request.POST)
...
else:
item_form = ItemNewForm()
return render(request, "item_new.html", {
'item_form' : item_form,
})
表单:
class ItemNewForm(forms.ModelForm):
class Meta:
model = Item
HTML:
...
<form method="POST" id="item_new_form">
{% csrf_token %}
<label>Name : </label><<span>{{ item_form.name }}</span></span>
<label>Supplier : </label><span>{{ item_form.supplier }}</span>
<input type="submit" value="Add">
</form>
...
回溯:
TypeError at /item/add
__init__() takes exactly 1 argument (7 given)
Request Method: GET
Request URL:
Django Version: 1.5.4
Exception Type: TypeError
Exception Value:
__init__() takes exactly 1 argument (7 given)
Exception Location: C:\Python27\lib\site-packages\django\db\models\query.py in iterator, line 327
Python Executable: C:\Python27\python.exe
Python Version: 2.7.5
Python Path:
['E:\\projects\\WebPOS',
'E:\\tools\\ide\\eclipse\\plugins\\org.python.pydev_3.0.0.201311051910\\pysrc',
'E:\\projects\\WebPOS',
'C:\\Python27\\lib\\site-packages\\distribute-0.6.49-py2.7.egg',
'C:\\Python27\\DLLs',
'C:\\Python27\\lib',
'C:\\Python27\\lib\\lib-tk',
'C:\\Python27',
'C:\\Python27\\lib\\site-packages',
'C:\\Python27\\lib\\site-packages\\setuptools-0.6c11-py2.7.egg-info',
'C:\\WINDOWS\\SYSTEM32\\python27.zip',
'C:\\Python27\\lib\\plat-win']
Server time: Tue, 10 Dec 2013 07:45:07 +0800
Error during template rendering:
In template E:\projects\WebPOS\base\templates\item_new.html, error at line 14
__init__() takes exactly 1 argument (7 given)
4
5 {% block sidebar %}
6 {% include "nav.html" %}
7 {% endblock %}
8
9 {% block content %}
10 <h3>Add New Item</h3>
11 <form method="POST" id="item_new_form">
12 {% csrf_token %}
13 <div class="span-4"><label>Name : </label></div><div class="span-12 last"><span>{{ item_form.name }}</span></div>
14 <div class="span-4"><label>Supplier : </label></div><div class="span-12 last"><span>{{ item_form.supplier }}</span></div>
15 <div class="span-16 last"><input type="submit" value="Add"></div>
16 </form>
17 {% endblock %}
18