views.py代码
def test(request):
if request.method == 'GET':
return render(request,'test.html')
elif request.method == 'POST':
# print(request.POST)
username = request.POST.get('username')
password = request.POST.get('password')
sex = request.POST.get('sex')
city = request.POST.get('city')
print(locals()) #{'city': 'shanghai', 'sex': '1', 'password': '123', 'username': 'root', 'request': <WSGIRequest: POST '/test/'>}
return render(request,'test.html',locals())
test.html代码
<form action="/test/" method="post">
用户名：<input type="text" name="username" value="{{ username }}">
密码：<input type="password" name="password" >
<input type="radio" name="sex" value="1" {% if sex in '1' %}checked{% else %}{% endif %}>男
<input type="radio" name="sex" value="2" {% if sex in '2' %}checked{% else %}{% endif %}>女
<select name="city" >
<option value="beijing" {% if city in 'beijing' %}selected{% else %}{% endif %}>北京</option>
<option value="shanghai" {% if city in 'shanghai' %}selected{% else %}{% endif %}>上海</option>
<option value="guangdong" {% if city in 'guangdong' %}selected{% else %}{% endif %}>广东</option>
</select>
<input type="submit">
</form>
locals()分析
locals()方法返回当前局部作用域的变量以字典的形式返回
{'city': 'shanghai', 'sex': '1', 'password': '123', 'username': 'root', 'request': <WSGIRequest: POST '/test/'>}
这样就很方便你在后台获取前端发送过来的数据，然后再模板渲染替换字符串。
locals()更新字典值，跟普通字典一样
locals()[键] = 新值
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