15、Django Admin添加自定义字段功能

修改模型类HeroAdmin

@admin.register(Hero)
class HeroAdmin(admin.ModelAdmin):change_list_template = "entities/heroes_changelist.html"...    # 此处原代码不动，只增加此前后代码def get_urls(self):urls = super().get_urls()my_urls = [path('immortal/', self.set_immortal),path('mortal/', self.set_mortal),]return my_urls + urlsdef set_immortal(self, request):self.model.objects.all().update(is_immortal=True)self.message_user(request, "All heroes are now immortal")return HttpResponseRedirect("../")def set_mortal(self, request):self.model.objects.all().update(is_immortal=False)self.message_user(request, "All heroes are now mortal")return HttpResponseRedirect("../")

新增目录文件templates/Entities/change_form.html，Entities为应用名。change_form.html代码如下：

{% extends "admin/change_form.html" %}
{% load i18n admin_urls %}
{% block object-tools-items %}<li><a href="{% url opts|admin_urlname:'history' original.pk|admin_urlquote %}" class="historylink">{% translate "History" %}</a></li><li><a href="mylink/" class="historylink">My Link</a></li>{% if has_absolute_url %}<li><a href="{% url 'admin:view_on_site' content_type_id original.pk %}" class="viewsitelink">{% translate "View on site" %}</a></li>{% endif %}
{% endblock %}

显示效果：