问题描述
如何从 Django 中的 charField 的末尾去除空格(修剪)?
How do I strip whitespaces (trim) from the end of a charField in Django?
这是我的模型,正如您所看到的,我尝试过放入干净的方法,但这些方法从未运行过.
Here is my Model, as you can see I've tried putting in clean methods but these never get run.
我也试过 name.strip()
, models.charField().strip()
但这些也不起作用.
I've also tried doing name.strip()
, models.charField().strip()
but these do not work either.
有没有办法强制 charField 为我自动修剪?
Is there a way to force the charField to trim automatically for me?
谢谢.
from django.db import models
from django.forms import ModelForm
from django.core.exceptions import ValidationError
import datetime
class Employee(models.Model):
"""(Workers, Staff, etc)"""
name = models.CharField(blank=True, null=True, max_length=100)
def save(self, *args, **kwargs):
try:
# This line doesn't do anything??
#self.full_clean()
Employee.clean(self)
except ValidationError, e:
print e.message_dict
super(Employee, self).save(*args, **kwargs) # Real save
# If I uncomment this, I get an TypeError: unsubscriptable object
#def clean(self):
# return self.clean['name'].strip()
def __unicode__(self):
return self.name
class Meta:
verbose_name_plural = 'Employees'
class Admin:pass
class EmployeeForm(ModelForm):
class Meta:
model = Employee
# I have no idea if this method is being called or not
def full_clean(self):
return super(Employee), self.clean().strip()
#return self.clean['name'].strip()
已将代码更新为我的最新版本.我不确定我做错了什么,因为它仍然没有去除空格(修剪)名称字段.
Edited: Updated code to my latest version. I am not sure what I am doing wrong as it's still not stripping the whitespace (trimming) the name field.
推荐答案
必须调用模型清理(它不是自动的)所以在你的保存方法中放置一些 self.full_clean()
.
http://docs.djangoproject.com/en/dev/ref/models/instances/#django.db.models.Model.full_clean
Model cleaning has to be called (it's not automatic) so place some self.full_clean()
in your save method.
http://docs.djangoproject.com/en/dev/ref/models/instances/#django.db.models.Model.full_clean
至于你的表单,你需要返回剥离干净的数据.
As for your form, you need to return the stripped cleaned data.
return self.cleaned_data['name'].strip()
不知何故,我认为您只是尝试做一些行不通的事情.请记住,形式和模型是两种截然不同的事物.
Somehow I think you just tried to do a bunch of stuff that doesn't work. Remember that forms and models are 2 very different things.
查看有关如何验证表单的表单文档http://docs.djangoproject.com/en/dev/ref/forms/验证/
Check up on the forms docs on how to validate formshttp://docs.djangoproject.com/en/dev/ref/forms/validation/
super(Employee), self.clean().strip() 根本没有意义!
这是您修复的代码:
class Employee(models.Model):
"""(Workers, Staff, etc)"""
name = models.CharField(blank=True, null=True, max_length=100)
def save(self, *args, **kwargs):
self.full_clean() # performs regular validation then clean()
super(Employee, self).save(*args, **kwargs)
def clean(self):
"""
Custom validation (read docs)
PS: why do you have null=True on charfield?
we could avoid the check for name
"""
if self.name:
self.name = self.name.strip()
class EmployeeForm(ModelForm):
class Meta:
model = Employee
def clean_name(self):
"""
If somebody enters into this form ' hello ',
the extra whitespace will be stripped.
"""
return self.cleaned_data.get('name', '').strip()
这篇关于(Django) 从 charField 中修剪空格的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!