要在django中定义css类，只需在表单中使用小部件即可。

例子:

class ProcessForm(forms.ModelForm):  
    class Meta:  
        model = Processmachine 
        fields = ['machine_name', 'operation_no', 'process_uploadfile'] #https://docs.djangoproject.com/en/3.0/ref/forms/widgets/
        widgets = { 'machine_name': forms.TextInput(attrs={ 'class': 'form-control' }), 
            'operation_no': forms.TextInput(attrs={ 'class': 'form-control' }),
            'process_uploadfile': forms.ClearableFileInput(attrs={ 'class': 'form-control' }),
      }

在上面的表单中，我在attrs中使用了css类

事实证明，你可以在表单构造函数(init函数)或在表单类初始化后这样做。这有时是必需的，如果你不是写自己的形式和形式是来自其他地方-

def some_view(request):
    add_css_to_fields = ['list','of','fields']
    if request.method == 'POST':
        form = SomeForm(request.POST)
        if form.is_valid():
            return HttpResponseRedirect('/thanks/')
    else:
        form = SomeForm()

    for key in form.fields.keys():
        if key in add_css_to_fields:
            field = form.fields[key]
            css_addition = 'css_addition '
            css = field.widget.attrs.get('class', '')
            field.widget.attrs['class'] = css_addition + css_classes

    return render(request, 'template_name.html', {'form': form})

你可以试试这个。

class SampleClass(forms.Form):
  name = forms.CharField(max_length=30)
  name.widget.attrs.update({'class': 'your-class'})
...

你可以在Django Widgets中看到更多信息

要在django中定义css类，只需在表单中使用小部件即可。

例子:

class ProcessForm(forms.ModelForm):  
    class Meta:  
        model = Processmachine 
        fields = ['machine_name', 'operation_no', 'process_uploadfile'] #https://docs.djangoproject.com/en/3.0/ref/forms/widgets/
        widgets = { 'machine_name': forms.TextInput(attrs={ 'class': 'form-control' }), 
            'operation_no': forms.TextInput(attrs={ 'class': 'form-control' }),
            'process_uploadfile': forms.ClearableFileInput(attrs={ 'class': 'form-control' }),
      }

在上面的表单中，我在attrs中使用了css类

扩展docs.djangoproject.com中指出的方法:

class MyForm(forms.Form): 
    comment = forms.CharField(
            widget=forms.TextInput(attrs={'size':'40'}))

我认为必须知道每个字段的本机小部件类型很麻烦，而且为了在表单字段上放一个类名而重写默认值也很有趣。这似乎对我很管用:

class MyForm(forms.Form): 
    #This instantiates the field w/ the default widget
    comment = forms.CharField()

    #We only override the part we care about
    comment.widget.attrs['size'] = '40'

我觉得这样更干净了。

如果您希望表单中的所有字段都继承某个类，只需定义一个父类，从表单继承。ModelForm，然后继承它

class BaseForm(forms.ModelForm):
    def __init__(self, *args, **kwargs):
        super(BaseForm, self).__init__(*args, **kwargs)
        for field_name, field in self.fields.items():
            field.widget.attrs['class'] = 'someClass'


class WhateverForm(BaseForm):
    class Meta:
        model = SomeModel

这帮助我自动将“form-control”类添加到应用程序的所有表单上的所有字段，而不需要添加代码复制。