Question

我正在尝试修改查询，因此它也会返回元素数我想计算与“出版物”有关的“PublicationComments”的数量。现在查询看起来像这样：

let query = {
  attributes: {
    exclude: attributesToExclude,
  },
  where: {
    'club_id': this.id,
  },
  order: [['date', 'DESC']],
  include: [
    {
      model: models.PublicationComment,
      association: models.Publication.hasMany(models.PublicationComment, { as: 'lastComments' }),
      order: [['date', 'DESC']],
      limit: 3,
      include: [
        {
          model: models.User, as: 'user',
          attributes: {
            exclude: attributesToExclude,
          },
        }
      ],
    },
    {
      model: models.PublicationLike,
      association: models.Publication.hasMany(models.PublicationLike, { as: 'likes' }),
      attributes: ['userId']
    }
  ]
};

我想要获得的结果如下：

[  { id: '2',
clubId: '26',
teamId: null,
userId: '67',
date: '2017-04-18T11:23:05.628Z',
card: 
 { type: 'status',
   text: 'publication example text',
   video: [Object] },
created_at: '2017-04-18T11:23:05.629Z',
updated_at: '2017-04-18T11:23:05.629Z',
deleted_at: null,
likes: [],
commentsCount: 4,
lastComments: [ [Object], [Object], [Object] ] }]

请注意，有一个CommentCount属性，其中包含所需计数查询的结果

我尝试通过注释添加包含属性计数功能，并重复与PublicationComment模型的关联，不带限制参数（我需要总计）。像这样：

 attributes: {
    include: [[sequelize.fn('count', sequelize.col(allComments.id), 'commentsCount']]
    exclude: attributesToExclude,
  },

在icludde数组中添加新的associaton：

    {
      model: models.PublicationComment,
      association: models.Publication.hasMany(models.PublicationComment, { as: 'allComments' })         
    }

但在经过两天的努力后，我无法使其发挥作用。

我是否有任何建议，资源或澄清可以用来推进？感谢。

Sequelize js添加关联模型的总数

0 个答案: