Usage

Inherit your models from PublishableModel:

from publishable_model.models import PublishableModel

class MyModel(PublishableModel, models.Model):

    class Meta(PublishableModel.Meta):
        verbose_name = _("My Model")

Inherit your ModelAdmins from PublishableModelAdmin:

from publishable_model.admin import PublishableModelAdmin

@admin.register(MyModel)
class MyModelAdmin(PublishableModelAdmin, admin.ModelAdmin):
    # Uncomment next lines to enable automatic visualization of publication dates in list_display
    # DISPLAY_PUBLICATION_DATES = True
    # DISPLAY_PUBLICATION_START = True
    # DISPLAY_PUBLICATION_END = True

    fieldsets = (
        (None, {'fields': (
             ...
        )}),
        (_('Publication'), {'fields': (('status', 'publication_start',
                                        'publication_end',),)}),
    )