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Django管理员:CharField作为TextArea

django-admin django

maxp · 技术社区 · 17 年前

我有

class Cab(models.Model):
    name  = models.CharField( max_length=20 )
    descr = models.CharField( max_length=2000 )

class Cab_Admin(admin.ModelAdmin):
    ordering     = ('name',)
    list_display = ('name','descr', )
    # what to write here to make descr using TextArea?

admin.site.register( Cab, Cab_Admin )

upd:
在里面仅限界面!

使用ModelForm是个好主意。

9 回复 | 直到 15 年前

103

IntrepidDude 13 年前

您必须创建一个 forms.ModelForm 这将描述你想要的是什么 descr 要显示的字段,然后告诉 admin.ModelAdmin

from django import forms
class CabModelForm( forms.ModelForm ):
    descr = forms.CharField( widget=forms.Textarea )
    class Meta:
        model = Cab

class Cab_Admin( admin.ModelAdmin ):
    form = CabModelForm

这个 form 属性 admin.ModelAdmin 记录在Django官方文件中。这是 one place to look at .

Carl Meyer 14 年前

formfield_for_dbfield 你的方法 ModelAdmin 类别:

class CabAdmin(admin.ModelAdmin):
    def formfield_for_dbfield(self, db_field, **kwargs):
        formfield = super(CabAdmin, self).formfield_for_dbfield(db_field, **kwargs)
        if db_field.name == 'descr':
            formfield.widget = forms.Textarea(attrs=formfield.widget.attrs)
        return formfield

Gezim Tarang 15 年前

class MessageAdminForm(forms.ModelForm):
    class Meta:
        model = Message
        widgets = {
            'text': forms.Textarea(attrs={'cols': 80, 'rows': 20}),
        }

class MessageAdmin(admin.ModelAdmin):
    form = MessageAdminForm
admin.site.register(Message, MessageAdmin)

因此,您不需要在ModelForm中重新定义字段来更改它的小部件,只需在Meta中设置小部件dict。

Ashish Gupta 7 年前

formfield 方法:

class CharFieldWithTextarea(models.CharField):

    def formfield(self, **kwargs):
        kwargs.update({"widget": forms.Textarea})
        return super(CharFieldWithTextarea, self).formfield(**kwargs)

这将影响所有生成的表单。

x-yuri 8 年前

您不需要自己创建表单类:

from django.contrib import admin
from django import forms

class MyModelAdmin(admin.ModelAdmin):
    def get_form(self, request, obj=None, **kwargs):
        kwargs['widgets'] = {'descr': forms.Textarea}
        return super().get_form(request, obj, **kwargs)

admin.site.register(MyModel, MyModelAdmin)

看见 ModelAdmin.get_form .

Aaron Lelevier 12 年前

如果您试图更改admin.py上的文本区域,这是一个适合我的解决方案:

from django import forms
from django.contrib import admin
from django.db import models
from django.forms import TextInput, Textarea

from books.models import Book

class BookForm(forms.ModelForm):
    description = forms.CharField( widget=forms.Textarea(attrs={'rows': 5, 'cols': 100}))
    class Meta:
        model = Book

class BookAdmin(admin.ModelAdmin):
    form = BookForm

admin.site.register(Book, BookAdmin)

mipadi 17 年前

而不是 models.CharField models.TextField 对于 descr .

Stephen Rauch Afsar Ali 8 年前

你可以用 models.TextField 为此目的:

class Sample(models.Model):
    field1 = models.CharField(max_length=128)
    field2 = models.TextField(max_length=1024*2)   # Will be rendered as textarea

tarequeh 9 年前

我总是用 TextField 而不是 CharField (带或不带选项)并在UI/API端而不是在DB级别施加字符限制。要使其动态工作,请执行以下操作:

from django import forms
from django.contrib import admin


class BaseAdmin(admin.ModelAdmin):
    """
    Base admin capable of forcing widget conversion
    """
    def formfield_for_dbfield(self, db_field, **kwargs):
        formfield = super(BaseAdmin, self).formfield_for_dbfield(
            db_field, **kwargs)

        display_as_charfield = getattr(self, 'display_as_charfield', [])
        display_as_choicefield = getattr(self, 'display_as_choicefield', [])

        if db_field.name in display_as_charfield:
            formfield.widget = forms.TextInput(attrs=formfield.widget.attrs)
        elif db_field.name in display_as_choicefield:
            formfield.widget = forms.Select(choices=formfield.choices,
                                            attrs=formfield.widget.attrs)

        return formfield

我有一个模特的名字 Post 哪里 title , slug state 是

@admin.register(Post)
class PostAdmin(BaseAdmin):
    list_display = ('pk', 'title', 'author', 'org', 'state', 'created',)
    search_fields = [
        'title',
        'author__username',
    ]
    display_as_charfield = ['title', 'slug']
    display_as_choicefield = ['state']

我想其他寻找答案的人可能会觉得这很有用。