Question

我想在我的一个表单中填充两个外键字段。相关的代码位如下：

if request.method == 'POST':
    form = IssuesForm(request.POST or None)
    if request.method == 'POST' and form.is_valid():
        form.save()
else:
    form = IssuesForm(initial={'vehicle': stock_number, 'addedBy': request.user, })

vehicle指向Vehicle课程。 addedBy将包含当前登录的用户。

然而，根据我的意愿，下拉没有初始化......我仍然需要选择车辆和用户。从这里我有两个问题：

可能是什么问题？
将这些表单设为只读的最佳方法是什么？

编辑1 到目前为止，IssueForm类看起来像这样：

class Issues(models.Model):
   vehicle = models.ForeignKey(Vehicle)
   description = models.CharField('Issue Description', max_length=30,)
   type = models.CharField(max_length=10, default='Other', choices=ISSUE_CHOICES)
   status = models.CharField(max_length=12, default='Pending', 
     choices=ISSUE_STATUS_CHOICES)
   priority = models.IntegerField(default='8', editable=False)
   addedBy = models.ForeignKey(User, related_name='added_by')
   assignedTo = models.CharField(max_length=30, default='Unassigned')
   dateTimeAdded = models.DateTimeField('Added On', default=datetime.today, 
     editable=False)
   def __unicode__(self):    
    return self.description

表格类

class IssuesForm(ModelForm):   
  class Meta:
    model = Issues
    exclude = ('assignedTo')

Answer 1

对于第二个问题，您是否要将addedBy字段设为只读？如果是这样，请不要将其添加到您的表单中（如果您将其呈现给用户，它将永远不会是只读的，例如Firebug）。您可以在保存方法中填充它。

if request.method == 'POST':
    form = IssuesForm(request.POST or None)
    if request.method == 'POST' and form.is_valid():
        issue = form.save(commit=False)
        issue.addedBy = request.user
        # any other read only data goes here
        issue.save()
else:
    form = IssuesForm(initial={'vehicle': stock_number}) # this is related to your first question, which I'm not sure about until seeing the form code

Answer 2

要使表单只读：在表单类上，覆盖__init__method以禁用html字段：

def __init__(self, *args, **kwargs):
    super(IssuesForm, self).__init__(*args, **kwargs)
    for key in self.fields.keys():
        self.fields[key].widget.attrs = {'disabled': 'disabled'}

确保您也不听POST请求，如果是，请不要保存表单。您可以进一步自定义__init__method以获取一些参数，并在调用super方法后将字段设置为这些值。

初始化外键下拉

2 个答案: