Django模型的额外参数 [英] Extra parameter for Django models
本文介绍了Django模型的额外参数的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
class Foo(models.Model):
name = models.CharField(max_length = 50)
#wrapping保存功能,包括额外的任务
def save(self,* args,** kwargs):
super(Foo ,self).save(* args,** kwargs)
如果extra_param:
...执行任务1
else:
...执行任务2
同时打包Foo我想通过如
$ b $现在触发任务1
Foo(name =Bill Gates)。 save()#现在触发任务2
如何做到这一点?我也可以接受任何其他建议:)
谢谢
解决方案
您可以在模型中定义非持久性字段。
class Foo(models.Model):
name = models.CharField(max_length = 50)
extra_param = False
def save(self,* args,** kwargs):
...
print self。另外,您可以执行以下操作:
<$>
p $ p> Foo(name =Bill Gates)。save(extra_param = True)
def save(self,* args,** kwargs):
...
打印kwargs [extra_param]
With Django models, I want to achieve this:
class Foo(models.Model):
name = models.CharField(max_length=50)
#wrapping the save function, including extra tasks
def save(self, *args, **kwargs):
super(Foo, self).save(*args, **kwargs)
if extra_param:
...do task 1
else:
...do task 2
And while crating Foo I want to pass such as
Foo(name="Bill Gates",extra_param=True).save() # now triggers the task 1
Foo(name="Bill Gates").save() # now triggers the task 2
How can this be done? I am also open to any other suggestions :)
Thanks
解决方案
You can define non-persistent fields in your model.
class Foo(models.Model):
name = models.CharField(max_length=50)
extra_param = False
def save(self, *args, **kwargs):
...
print self.extra_param
Alternatively, you can do:
Foo(name="Bill Gates").save(extra_param=True)
def save(self, *args, **kwargs):
...
print kwargs["extra_param"]
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