django - 除了 "change" View 之外，是否有办法让自定义 Django 管理操作出现在 "change list" View 上？

Question

无论出于何种原因，我认为这很容易做到，但我仔细观察后发现似乎没有直接的方法允许用户在实例的“更改” View 上执行自定义管理操作(即当您只是查看单个实例的编辑屏幕，而不是实例列表)。

我是否忽略了一种简单的方法来做到这一点？或者我唯一的选择是覆盖管理模板之一(可能还有 ModelAdmin.add_view 方法)？

Answer 1

这里是this的更新和改进回答。它适用于 django 1.6 并重定向到您来自的地方。

class ActionInChangeFormMixin(object):
    def response_action(self, request, queryset):
        """
        Prefer http referer for redirect
        """
        response = super(ActionInChangeFormMixin, self).response_action(request,
                queryset)
        if isinstance(response, HttpResponseRedirect):
            response['Location'] = request.META.get('HTTP_REFERER', response.url)
        return response  

    def change_view(self, request, object_id, extra_context=None):
        actions = self.get_actions(request)
        if actions:
            action_form = self.action_form(auto_id=None)
            action_form.fields['action'].choices = self.get_action_choices(request)
        else: 
            action_form = None
        extra_context=extra_context or {}
        extra_context['action_form'] = action_form
        return super(ActionInChangeFormMixin, self).change_view(request, object_id, extra_context=extra_context)

class MyModelAdmin(ActionInChangeFormMixin, ModelAdmin):
    ......

模板:

{% extends "admin/change_form.html" %}
{% load i18n admin_static admin_list admin_urls %}

{% block extrastyle %}
  {{ block.super }}
  <link rel="stylesheet" type="text/css" href="{% static "admin/css/changelists.css" %}" />
{% endblock %}

{% block object-tools %}
    {{ block.super }}
    <div id="changelist">
    <form action="{% url opts|admin_urlname:'changelist' %}" method="POST">{% csrf_token %}
        {% admin_actions %}
        <input type="hidden" name="_selected_action" value="{{ object_id }}">
    </form>
    </div>
{% endblock %}