增加Django表单中的CharField宽度

Question

我正在扩展UserCreationForm并添加了

username=forms.CharField(max_length=30, widget=forms.TextInput(attrs={'size':'80'}))

但用户名字段宽度不会更改。我怎样才能增加它？

Answer 1

尝试在表单中指定小部件，如下例所示：

<强> models.py

class Photo(models.Model):
    caption = models.CharField(max_length=80)

<强> admin.py

class PhotoAdmin(admin.ModelAdmin):
    list_display = (u'preview', u'caption')
    search_fields = (u'caption')
    form = forms.PhotoAdminForm

<强> forms.py

class PhotoAdminForm(forms.ModelForm):
    class Meta:
        widgets = { 'caption': forms.TextInput(attrs={'size': 80})}

作为替代方案，您可以使用以下内容：

<强> forms.py

class PhotoAdminForm(forms.ModelForm):
    caption = forms.CharField(widget=forms.TextInput(attrs={'size':80}))

Answer 2

从1.7开始你可以这样解决：

<强> admin.py

class PhotoAdmin(admin.ModelAdmin):
    list_display = (u'preview', u'caption')
    search_fields = (u'caption')
    formfield_overrides = {
        models.CharField: {'widget': TextInput(attrs={'size': '80'})}
    }