Django：如何从管理界面调用管理自定义命令执行？ [英] Django: How to call management custom command execution from admin interface?

问题描述

请参阅从代码中执行管理命令，

它们是从Django管理界面调用此命令执行代码的方法吗？

Is their a way to call this command execution code from the django admin interface?

我有一个自定义命令来对数据库进行一些定期更新，该数据库已安排为cron 。 Cron工作正常。我需要在需要时从管理界面手动更新数据库。

I've a custom command to do some periodic update of database which has been scheduled as cron. The cron is working fine. I need to update the database manually from the admin interface whenever needed.

推荐答案

更新：只需在python代码中的任意位置调用函数 call_command（'compilemessages'）即可运行任何管理命令。注意：从呼叫者的角度来看，这显然是一个阻止过程。通过下面的ajax示例，您可以拥有一种非阻塞/异步用户体验的形式。根据后端的实现，您可以进一步提高隔离级别。

update: you can run any management command simply by calling the function call_command('compilemessages') from anywhere within your python code. Note: this obviously is a blocking process from the caller's perspective. With the ajax example below you can have a form of non-blocking/asynchronous user experience. Depending on the backend implementation you can take this isolation level further.

示例：

from django.core.management import call_command
call_command('compilemessages')

如果该任务绑定到当前在admin中查看的对象，那么一种不错的方法可能是在单击按钮时实现一个由ajax脚本调用的额外视图。额外的视图可以选择包装为芹菜任务，例如

If the task is bound to the object currently viewed in the admin, a nice way might be to implement an extra view called by an ajax script when clicking a button. The extra view could optionally be wrapped as a celery task, e.g.

models.py

class Foo(models.Model):
    # fields...

    def my_task_init(self):
        return mark_safe("<img class='loading' src='/static/img/loading.gif' alt='loading' style='display:none;' /><a data-identifier='task_%i' class='task'><img src='/static/img/process.png' style='cursor:pointer;' /></a>") % self.id
    my_task_init.allow_tags = True
    my_task_init.short_description = _(u"Execute Task")

admin.py

class FooAdmin(admin.ModelAdmin):
    list_display = ['other_field', 'my_task_init']

    class Media:
        js = (
            'https://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.js',
            '/static/js/admin_tasks.js',
        )

    def get_urls(self):
        urls = super(FooAdmin, self).get_urls()
        extra_urls = patterns('',
            (r'^my-task/$', self.admin_site.admin_view(self.parse_view))
        )
        return extra_urls + urls

    # optionally decorated by celery
    def task_view(self, request):
        if not request.is_ajax():
            raise Http404
        task_id = request.GET.get('task_id')
        # your logic
        return HttpResponse('Success')

admin_tasks.js

$(document).ready(function (){
   $('.task').click(function(){
       var image = $(this).find('img'),
           loading = $(this).parent().find('.loading'),
           task_id = $(this).data('identifier').replace('task_', '');
       $.ajax({
           type: "GET",
           data: ({'task_id': task_id}),
           url: "/admin/app/model/my-task/",
           beforeSend: function() {
               image.hide();
               loading.show();
           },
           statusCode: {
               200: function() {
                   loading.hide();
                   image.attr('src', '/static/img/success.png');
                   image.show();
               },
               404: function() {
                   loading.hide();
                   image.attr('src', '/static/img/error.png');
                   image.show();
               },
               500: function() {
                   loading.hide();
                   image.attr('src', '/static/img/error.png');
                   image.show();
               }
           }
       });
   });
});

如果您要启动未绑定的任务，则可以覆盖模板元素或添加一些html

If you're trying to initiate an unbound task you could just override a template element or add some html.

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