from django import forms

from django.contrib import admin

from django.contrib.flatpages.models import FlatPage

from django.utils.translation import ugettext_lazy as _

class FlatpageForm(forms.ModelForm):

    url = forms.RegexField(label=_("URL"), max_length=100, regex=r'^[-\w/]+$',

        help_text = _("Example: '/about/contact/'. Make sure to have leading"

                      " and trailing slashes."),

        error_message = _("This value must contain only letters, numbers,"

                          " underscores, dashes or slashes."))

    class Meta:

        model = FlatPage

class FlatPageAdmin(admin.ModelAdmin):

    form = FlatpageForm

    fieldsets = (

        (None, {'fields': ('url', 'title', 'content', 'sites')}),

        (_('Advanced options'), {'classes': ('collapse',), 'fields': ('enable_comments', 'registration_required', 'template_name')}),

    )

    list_display = ('url', 'title')

    list_filter = ('sites', 'enable_comments', 'registration_required')

    search_fields = ('url', 'title')

admin.site.register(FlatPage, FlatPageAdmin)