Django基于form组件实现注册校验

一 基本流程

1 创建form组件对应的类，比如LoginForm

2 前端的三种渲染方式：

渲染方式三种：
1
<form action="" novalidate method="post">
    {% csrf_token %}
    {{ form_obj.as_p }}
    <input type="submit">
</form>


2
<form action="" novalidate method="post">
    {% csrf_token %}
    <div>
        <label for="">用户名</label>
        {{ form_obj.user }} <span>{{ form_obj.errors.user.0 }}</span>
    </div>
    <div>
        <label for="">密码</label>
        {{ form_obj.pwd }}<span>{{ form_obj.errors.pwd.0 }}</span>
    </div>
    <input type="submit">
</form>

3

<form action="" novalidate method="post">
    {% csrf_token %}
    {% for field in form_obj %}
        <div>
            <label for="">{{ field.label }}</label>
            {{ field }}
        </div>
    {% endfor %}

    <input type="submit">
</form>

　　

二 注册校验

from django.core.exceptions import NON_FIELD_ERRORS, ValidationError
from django.forms import widgets

 1 class RegForm(forms.Form):
 2     user = forms.CharField(max_length=18, min_length=3,
 3                            error_messages={
 4                                'required': '不能为空',
 5                                'min_length': 'too short',
 6                                'max_length': "too long"
 7                            })
 8     pwd = forms.CharField(max_length=32, min_length=3,
 9                           error_messages={
10                               'max_length': "too long",
11                               'required': '不能为空',
12                               'min_length': 'too short',
13                           },
14                           widget=widgets.PasswordInput(attrs={}))
15     repeat_pwd = forms.CharField(label='确认密码',
16                                  max_length=32,
17                                  error_messages={},
18                                  widget=widgets.PasswordInput(attrs={}))
19     email = forms.EmailField(
20         error_messages={
21             "invalid": '格式错误'
22         }
23     )
24 
25     tel = forms.CharField()
26 
27     def clean_user(self):
28         val = self.cleaned_data.get("user")
29         ret = Userinfo.objects.filter(name=val)
30         if not ret:
31             return val
32         else:
33             raise ValidationError("该用户已经注册")
34 
35     def clean_tel(self):
36         val = self.cleaned_data.get('tel')
37         import re
38         ret = re.search("1[356789]\d{9}$", val)
39         if ret:
40             return val
41         else:
42             raise ValidationError("手机号格式错误")
43 
44     def clean(self):
45         pwd = self.cleaned_data.get('pwd')
46         repeat_pwd = self.cleaned_data.get('repeat_pwd')
47         if pwd == repeat_pwd:
48             return self.cleaned_data
49         else:
50             raise ValidationError("两次密码不一致")
forms
 1 def reg(request):
 2     if request.method == 'POST':
 3         reg_form = RegForm(request.POST)
 4         if reg_form.is_valid():
 5             print(reg_form.cleaned_data)  # dict
 6             name = reg_form.cleaned_data.get("user")
 7             pwd = reg_form.cleaned_data.get("pwd")
 8             Userinfo.objects.create(name=name, pwd=pwd)
 9 
10             return redirect('/login/')  # 注册成功去登录
11         else:
12             all_error = reg_form.errors.get("__all__")
13             return render(request, 'reg.html', locals())
14 
15     reg_form = RegForm()
16     return render(request, 'reg.html', {'reg_form': reg_form})
views
 1 <body>
 2 <h3>注册页面</h3>
 3 <form action="" novalidate method="post">
 4     {% csrf_token %}
 5     {% for field in reg_form %}
 6         <div>
 7             <label for="">{{ field.label }}</label>
 8             {{ field }}<span>{{ field.errors.0 }}</span>
 9             {% if field.label == '确认密码' %}
10                 <span>{{ all_error.0 }}</span>
11             {% endif %}
12         </div>
13     {% endfor %}
14     <input type="submit">
15 </form>
16 </body>
reg.html

 

posted @ 2018-02-02 17:39  iYouYue  阅读(162)  评论(0)  编辑  收藏  举报