reg2 函数：
from django.shortcuts import render, HttpResponse
from app01 import models
def reg2(request):
form_obj = RegForm() # GET 请求
if request.method == "POST":
form_obj = RegForm(request.POST)
if form_obj.is_valid():
pass
return render(request, "reg2.html", {"form_obj": form_obj})
在 bootstrap 上找到表单样式，https://v3.bootcss.com/css/#forms
label 标签处用的是 form-group 样式
reg2.html：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>注册页面</title>
<link rel="stylesheet" href="/static/bootstrap/css/bootstrap.min.css">
</head>
<body>
<div class="container">
<form action="/reg2/" method="post" novalidate>
{% csrf_token %}
<div class="form-group">
{{ form_obj.username.label }}
{{ form_obj.username }}
<span>{{ form_obj.username.errors.0 }}</span>
</div>
<div class="form-group">
{{ form_obj.password.label }}
{{ form_obj.password }}
<span>{{ form_obj.password.errors.0 }}</span>
</div>
<p><input type="submit"></p>
</form>
</div>
</body>
</html>
input 标签处用的是 form-control 样式
在 views.py 的 form 类中用 widgets 进行添加该样式
from django import forms
from django.forms import widgets
class RegForm(forms.Form):
username = forms.CharField(
min_length=5,
label="用户名",
error_messages={
"min_length": "用户名不能少于5位！",
},
widget=widgets.TextInput(attrs={"class": "form-control"})
)
password = forms.CharField(
min_length=6,
label="密码",
error_messages={
"min_length": "密码不能少于6位！",
},
widget=widgets.PasswordInput(attrs={"class": "form-control"}, render_value=True)
)
button 处用的是 btn btn-default 样式
直接在 index.html 处添加就好了
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>注册页面</title>
<link rel="stylesheet" href="/static/bootstrap/css/bootstrap.min.css">
</head>
<body>
<div class="container">
<form action="/reg2/" method="post" novalidate>
{% csrf_token %}
<div class="form-group">
{{ form_obj.username.label }}
{{ form_obj.username }}
<span>{{ form_obj.username.errors.0 }}</span>
</div>
<div class="form-group">
{{ form_obj.password.label }}
{{ form_obj.password }}
<span>{{ form_obj.password.errors.0 }}</span>
</div>
<p><input type="submit" class="btn btn-default"></p>
</form>
</div>
</body>
</html>
运行结果：
input 处太长了，把它布局到中间
index.html：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>注册页面</title>
<link rel="stylesheet" href="/static/bootstrap/css/bootstrap.min.css">
</head>
<body>
<div class="container">
<div class="row">
<div class="col-md-6 col-md-offset-3">
<form action="/reg2/" method="post" novalidate>
{% csrf_token %}
<div class="form-group">
{{ form_obj.username.label }}
{{ form_obj.username }}
<span>{{ form_obj.username.errors.0 }}</span>
</div>
<div class="form-group">
{{ form_obj.password.label }}
{{ form_obj.password }}
<span>{{ form_obj.password.errors.0 }}</span>
</div>
<p><input type="submit" class="btn btn-default"></p>
</form>
</div>
</div>
</div>
</body>
</html>
左边空 3 份，中间占 6 份，右边剩下 3 份
运行结果：
输入内容，点击 “提交”
错误提示可以使用 help-block 样式
reg2.html：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>注册页面</title>
<link rel="stylesheet" href="/static/bootstrap/css/bootstrap.min.css">
</head>
<body>
<div class="container">
<div class="row">
<div class="col-md-6 col-md-offset-3">
<form action="/reg2/" method="post" novalidate>
{% csrf_token %}
<div class="form-group {% if form_obj.username.errors.0 %}has-error{% endif %}">
{{ form_obj.username.label }}
{{ form_obj.username }}
<span class="help-block">{{ form_obj.username.errors.0 }}</span>
</div>
<div class="form-group {% if form_obj.password.errors.0 %}has-error{% endif %}">
{{ form_obj.password.label }}
{{ form_obj.password }}
<span class="help-block">{{ form_obj.password.errors.0 }}</span>
</div>
<p><input type="submit" class="btn btn-default"></p>
</form>
</div>
</div>
</div>
</body>
</html>
运行结果：
