這是form類表單，自定義的form表單，需要重寫鈎子函數
"""
forms類表單
"""
# 校驗密碼是否一致
from django.core.exceptions import ValidationError
from django import forms
class RegForm(forms.Form):
username = forms.CharField(
max_length=16,
label='用戶名',
label_suffix=":", # 后綴
error_messages={
"max_length": "用戶名最長16位",
"required": "用戶名不能為空"
},
widget=forms.widgets.TextInput(
attrs={
"class": "form-control"
}
)
)
password = forms.CharField(
min_length=6,
label='密碼',
widget=forms.widgets.PasswordInput(
attrs={
"class": "form-control"
},
render_value=True, #提交數據不把密碼清空
),
error_messages={
"min_length": "密碼至少六位數",
"required": "密碼不能為空"
}
)
re_password = forms.CharField(
min_length=6,
label='確認密碼',
widget=forms.widgets.PasswordInput(
attrs={
"class": "form-control"
}
),
error_messages={
"min_length": "密碼至少六位數",
"required": "密碼不能為空"
}
)
email = forms.EmailField(
label='郵箱',
widget=forms.widgets.EmailInput(
attrs={
"class": "form-control"
}
),
error_messages={
"invalid": "郵箱格式不正確!",
}
)
# 重寫全局的鈎子函數，對確認密碼做校驗
def clean(self):
password = self.cleaned_data.get("password")
re_password = self.cleaned_data.get("re_password")
if re_password and re_password != password:
self.add_error("re_password",ValidationError("兩次密碼不一致"))
else:
return self.cleaned_data
在HTML里面應該這樣寫
<!DOCTYPE html>
<html lang="en">
<head>
{% load static %}
<meta charset="UTF-8">
<title>歡迎注冊</title>
<link rel="stylesheet" href="{% static 'bootstrap/css/bootstrap.min.css' %}">
<link rel="stylesheet" href="{% static 'mystyle.css' %}">
</head>
<body>
<div class="container reg-form">
<div class="row">
<div class="col-md-6 col-md-offset-3">
<form novalidate action="/register/" method="post" class="form-horizontal" enctype="multipart/form-data">
{% csrf_token %}
<div class="form-group">
<label class="col-sm-2 control-label" for="{{ form_obj.username.id_for_label }}">
{{ form_obj.username.label }}
</label>
<div class="col-sm-8">
{{ form_obj.username }}
<span class="help-block">{{ form_obj.username.errors.0 }}</span>
</div>
</div>
<div class="form-group">
<label class="col-sm-2 control-label" for="{{ form_obj.password.id_for_label }}">
{{ form_obj.password.label }}
</label>
<div class="col-sm-8">
{{ form_obj.password }}
<span class="help-block">{{ form_obj.password.errors.0 }}</span>
</div>
</div>
<div class="form-group">
<label class="col-sm-2 control-label" for="{{ form_obj.re_password.id_for_label }}">
{{ form_obj.re_password.label }}
</label>
<div class="col-sm-8">
{{ form_obj.re_password }}
<span class="help-block">{{ form_obj.re_password.errors.0 }}</span>
</div>
</div>
<div class="form-group">
<label class="col-sm-2 control-label" for="{{ form_obj.email.id_for_label }}">
{{ form_obj.email.label }}
</label>
<div class="col-sm-8">
{{ form_obj.email }}
<span class="help-block">{{ form_obj.email.errors.0 }}</span>
</div>
</div>
<div class="form-group">
<label class="col-sm-2 control-label" for="id_avatar">
頭像
</label>
<div class="col-sm-8">
<label for="id_avatar" id="id_avatar_lab">
<img id="id_avatar-img" src="{% static 'images/default.jpg' %}" alt="">
</label>
<input type="file" name="avatar" id="id_avatar" style="display: none">
<span class="help-block"></span>
</div>
</div>
<div class="form-group">
<div class="col-sm-offset-2 col-sm-10">
<button type="submit" class="btn btn-primary">注冊</button>
</div>
</div>
</form>
</div>
</div>
</div>
在視圖函數里面
1 def register(request): 2 if request.method == 'POST': 3 form_obj = forms.RegForm(request.POST) 4 # 檢驗 5 if form_obj.is_valid(): 6 # 檢驗通過 7 # 去數據庫創建一個新的用戶 8 # 刪除多余的字段 9 form_obj.cleaned_data.pop('re_password') 10 models.UserInfo.objects.create_user(**form_obj.cleaned_data) 11 else: 12 # 將錯誤的信息返回到注冊頁面 13 return render(request, 'register.html', {"form_obj": form_obj}) 14 form_obj = forms.RegForm() 15 return render(request, 'register.html', {"form_obj": form_obj})
form_obj.is_valid()的執行順序:
1. 先按照form類中定義的字段順序，依次校驗每一個字段（內置的校驗規則）
2. 每個字段先校驗內置的規則， 然后字校驗clean_開頭的規則
3. 整個for循環走完之后， 再調用form類中定義的clean()方法
即可完成校驗兩次密碼是否一致的功能