django元件的forms元件

一.校驗字段功能   

models.py

class

userinfo(models.model):
name=models.charfield(max_length=32)
pwd=models.charfield(max_length=32)
email=models.emailfield()
tel=models.charfield(max_length=32)

register.html

"en

">

檢視函式:register

#

forms元件
from django.forms import
widgets
wid_01=widgets.textinput(attrs=)
wid_02=widgets.passwordinput(attrs=)
class
userform(forms.form):
name=forms.charfield(max_length=32,
widget=wid_01
)pwd=forms.charfield(max_length=32,widget=wid_02)
r_pwd=forms.charfield(max_length=32,widget=wid_02)
email=forms.emailfield(widget=wid_01)
tel=forms.charfield(max_length=32,widget=wid_01)
defregister(request):
if request.method=="
post":
form=userform(request.post)
ifform.is_valid():
print(form.cleaned_data)       #
所有乾淨的字段以及對應的值
else
:            
print(form.cleaned_data)       #
print(form.errors)             #
errordict : 
print(form.errors.get("
name
")) #
errorlist ["錯誤資訊",]
二.渲染標籤功能
1.渲染方式1
"en

">class="
container
">
class="
row">
class="
col-md-6 col-lg-offset-3
">

渲染方式2

渲染方式3

三.顯示錯誤與重置輸入資訊功能
檢視
def

register(request):
if request.method=="
post":
form=userform(request.post)
ifform.is_valid():
print(form.cleaned_data)       #
所有乾淨的字段以及對應的值
else
:            
print(form.cleaned_data)       #
print(form.errors)             #
errordict : 
print(form.errors.get("
name
")) #
errorlist ["錯誤資訊",]
return render(request,"
register.html
",locals())
form=userform()
return render(request,"
register.html
",locals())

模版

四.全域性鉤子和區域性鉤子
模版
#

forms元件
from django.forms import
widgets
wid_01=widgets.textinput(attrs=)
wid_02=widgets.passwordinput(attrs=)
from django.core.exceptions import
validationerror
class
userform(forms.form):
name=forms.charfield(max_length=32,
widget=wid_01
)pwd=forms.charfield(max_length=32,widget=wid_02)
r_pwd=forms.charfield(max_length=32,widget=wid_02)
email=forms.emailfield(widget=wid_01)
tel=forms.charfield(max_length=32,widget=wid_01)
#區域性鉤子
defclean_name(self):
val=self.cleaned_data.get("
name")
ifnot
val.isdigit():
return
val        
else
:            
raise validationerror("
使用者名稱不能是純數字!")
#全域性鉤子
defclean(self):
pwd=self.cleaned_data.get("
pwd"
)        r_pwd=self.cleaned_data.get("
r_pwd")
if pwd==r_pwd:
return
self.cleaned_data
else
:            
raise validationerror('
兩次密碼不一致!')
defregister(request):
if request.method=="
post":
form=userform(request.post)
ifform.is_valid():
print(form.cleaned_data)       #
所有乾淨的字段以及對應的值
else
:            clean_error=form.errors.get("
__all__")
return render(request,"
register.html
",locals())
form=userform()
return render(request,"
register.html
",locals())

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