表单的很多字段信息, 和models.py文件里的模型是一致的，为了避免重复代码，以及提高效率, 可以使用ModelForm，将模型和表单进行绑定。
Form
views.py
//创建业务类MyForm, 继承django中Form类
class MyForm(Form):
// Form类会在html中渲染出原始表单
user = forms.CharField(widget=forms.Input)
pwd = form.CharFiled(widget=forms.Input)
email = form.CharFiled(widget=forms.Input)
account = form.CharFiled(widget=forms.Input)
create_time = form.CharFiled(widget=forms.Input)
depart = form.CharFiled(widget=forms.Input)
gender = form.CharFiled(widget=forms.Input)
def user_add(request):
if request.method == "GET":
form = MyForm()
return render(request, 'user_add.html',{"form":form})
user_add.html (Form)
<form method="post">
{% for field in form%}
{{ field }}
{% endfor %}
<!-- <input type="text" placeholder="姓名" name="user" /> -->
</form>
或者
<form method="post">
{{ form.user }}
{{ form.pwd }}
{{ form.email }}
<!-- <input type="text" placeholder="姓名" name="user" /> -->
</form>
ModelForm
models.py
class UserInfo(models.Model):
""" 员工表 """
name = models.CharField(verbose_name="姓名", max_length=16)
password = models.CharField(verbose_name="密码", max_length=64)
age = models.IntegerField(verbose_name="年龄")
account = models.DecimalField(verbose_name="账户余额", max_digits=10, decimal_places=2, default=0)
create_time = models.DateTimeField(verbose_name="入职时间")
depart = models.ForeignKey(to="Department", to_field="id", on_delete=models.CASCADE)
gender_choices = (
(1, "男"),
(2, "女"),
)
gender = models.SmallIntegerField(verbose_name="性别", choices=gender_choices)
views.py 快速建立表单
class UserModelForm(forms.ModelForm):
name = forms.CharField(min_length=2, label="用户名")
password = forms.CharField(label="密码")
class Meta:
model = UserInfo
fields = ["name","password","age","xx"]
def user_add(request):
if request.method == "GET":
form = MyForm()
return render(request, 'user_add.html',{"form":form})
views.py 给表单添加样式
class UserModelForm(forms.ModelForm):
name = forms.CharField(min_length=2, label="用户名")
password = forms.CharField(label="密码")
# create_time = forms.DateTimeField()
class Meta:
model = models.UserInfo
fields = ['name', 'password', 'age', 'account', 'create_time', 'gender', 'depart']
# 方法1: 为前端元素添加类属性, 使其获得样式.
# widgets = {
# "name":forms.TextInput(attrs={"class":"form-control"})
# }
# 方法2: 为前端元素添加类属性, 使其获得样式.
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs) #super() 函数是用于调用父类(超类)的一个方法。
for name, field in self.fields.items():
field.widget.attrs = {"class":"form-control", "placeholder":field.label}
user_add.html (ModelForm)
<form method="post" novalidate>
{% csrf_token %}
{% for field in form %}
<div class="form-group">
<label>{{ field.label }}</label>
{{ field }}
<span style="color: red">{{ field.errors.0 }}</span>
</div>
{% endfor %}
<button type="submit" class="btn btn-primary">提交</button>
</form>
