将投影设置为数组的字段不起作用。撇号CMS

Question

我正在尝试设置投影以便从查询中检索较少的数据，但是当我尝试在投影中放入一个 array 字段时出现问题这是我的piece schema

module.exports = {
  name: "attendee",
  extend: "apostrophe-pieces",
  alias: "attendees",
  label: "Attendee",
  pluralLabel: "Attendees",
  addFields: [
    {
      name: "_congress",
      label: "Congress this attendee has sign up for",
      type: "joinByOne",
      withType: "congress",
      filters: {
        projection: {
          _id: 1,
          title: 1
        }
      }
    },
    {
      name: "registrationDate",
      label: "Registration Date",
      type: "date"
    },
    {
      name: "registrationTime",
      label: "Registration Time",
      def: null,
      type: "time"
    },
    {
      name: "fields",
      label: "Fields",
      type: "array",
      titleField: "Array Label",
      schema: [
        {
          name: "name",
          type: "string",
          label: "String"
        },
        {
          name: "value",
          type: "string",
          label: "Value"
        }
      ]
    }
  ],

我的查询是这样的：

 return self.find(req, { congressId }).projection({ registrationDate: 1, registrationTime: 1, fields: 1 }).toArray();

当我输入 fields: 1 时出现异常

否则 returns 数组如预期：

我也在 mongo shell 中尝试了这个查询并且它有效： > db.aposDocs.find({_id: "ck35z61p400047e9e5ktt6wu4"}).projection( {fields: 1})

{ "_id" : "ck35z61p400047e9e5ktt6wu4", "fields" : [ { "id" : "attende1Field1", "name" : "name", "value" : "Name1" }, { "id" : "attendee1Field1", "name" : "lastName", "value" : "Last Name1" }, { "id" : "attendee1Field1", "name" : "treatment", "value" : "Treatment1" }, { "id" : "attendee1Field1", "name" : "email", "value" : "email1@email.com" } ] } 也许我错过了什么？提前致谢

Answer 1

这似乎是由 MongoDB 错误引起的，至少在 2.x 版本的 MongoDB nodejs 驱动程序中是这样。特别是字段名称 fields 不起作用并生成您看到的错误：

Failed to parse: projection: 1. 'projection' field must be of BSON type object.

我将其重命名为 fields2，一切都按预期进行。所以你的解决方案只是更改数组字段的名称。看看配置的 apostrophe-mongo-3-driver 模块是否仍然出现此问题会很有趣。

将投影设置为数组的字段不起作用。撇号CMS

Set projection to a field that is an array is not working. ApostropheCMS

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