English 中文(简体)
我怎样才能更新Django模式中的某些领域?
原标题:How can I update only certain fields in a Django model form?

我有一个模型,用于更新模型。

class Turtle(models.Model):
    name = models.CharField(max_length=50, blank=False)
    description = models.TextField(blank=True)

class TurtleForm(forms.ModelForm):
    class Meta:
        model = Turtle

有时,我不需要更新整个模式,而只想更新其中一个领域。 因此,当I POST表格只有资料说明。 当我这样做时,这一模式永远不会消失,因为它认为,名字正在空白,而我的用意是,名字不会改变,只是从模型中加以利用。

    turtle_form = TurtleForm(request.POST, instance=object)
    if turtle_form.is_valid():
        turtle_form.save()

是否有办法做到这一点? 感谢!

最佳回答
问题回答

如果您不希望更新一个领域,则通过Meta <代码>将其从表格中删除(不包括)。 附录:

class Meta:
    exclude = ( title ,)




相关问题
Can Django models use MySQL functions?

Is there a way to force Django models to pass a field to a MySQL function every time the model data is read or loaded? To clarify what I mean in SQL, I want the Django model to produce something like ...

An enterprise scheduler for python (like quartz)

I am looking for an enterprise tasks scheduler for python, like quartz is for Java. Requirements: Persistent: if the process restarts or the machine restarts, then all the jobs must stay there and ...

How to remove unique, then duplicate dictionaries in a list?

Given the following list that contains some duplicate and some unique dictionaries, what is the best method to remove unique dictionaries first, then reduce the duplicate dictionaries to single ...

What is suggested seed value to use with random.seed()?

Simple enough question: I m using python random module to generate random integers. I want to know what is the suggested value to use with the random.seed() function? Currently I am letting this ...

How can I make the PyDev editor selectively ignore errors?

I m using PyDev under Eclipse to write some Jython code. I ve got numerous instances where I need to do something like this: import com.work.project.component.client.Interface.ISubInterface as ...

How do I profile `paster serve` s startup time?

Python s paster serve app.ini is taking longer than I would like to be ready for the first request. I know how to profile requests with middleware, but how do I profile the initialization time? I ...

Pragmatically adding give-aways/freebies to an online store

Our business currently has an online store and recently we ve been offering free specials to our customers. Right now, we simply display the special and give the buyer a notice stating we will add the ...

Converting Dictionary to List? [duplicate]

I m trying to convert a Python dictionary into a Python list, in order to perform some calculations. #My dictionary dict = {} dict[ Capital ]="London" dict[ Food ]="Fish&Chips" dict[ 2012 ]="...

热门标签