GET请求返回空数组而不是数组内容

时间:2016-11-26 14:47:42

标签: javascript express routes

我是一个新手,但是试图找出为什么我的GET请求返回一个空数组,即使我知道Mongo数据库集合不是空的。 WordForm集合中的每个单词形式都有一个“lexicalform”键,其值是对该集合中LexiconEntry对象的引用。当我使用LexiconEntry ObjectId作为参数提交GET请求时,它返回一个空数组而不是数组内容。这是我的文件:

我的控制器中的GET路线:

api.get('/wordforms/:id', (req, res) => {
    WordForm.find({lexiconentry: req.params.id}, (err, wordforms) => {
      if (err) {
        res.send(err);
      }
      res.json(wordforms);
    });
  });

LexiconEntry模型:

import mongoose from 'mongoose';
import WordForm from './wordform';
let Schema = mongoose.Schema;

let LexiconEntrySchema = new Schema({
  lexicalform: String,
  pos: String,
  gender: String,
  genderfull: String,
  decl: String,
  gloss: [String],
  meaning: String,
  pparts: [String],
  tags: [String],
  occurrences: Number,
  wordforms: [{type: Schema.Types.ObjectId, ref: 'Form'}]
});

module.exports = mongoose.model('LexiconEntry', LexiconEntrySchema);

WordForms模型:

import mongoose from 'mongoose';
import LexiconEntry from './lexiconentry';
let Schema = mongoose.Schema;

let WordFormSchema = new Schema({
  form: String,
  gender: String,
  case: String,
  number: String,
  lexicalform: {
    type: Schema.Types.ObjectId,
    ref: 'LexicalForm',
    required: true
  }
});

module.exports = mongoose.model('WordForm', WordFormSchema);

1 个答案:

答案 0 :(得分:0)

根据上面给出的WordForm架构,lexiconentry架构中没有此类属性WordForm,如下面的查询所示。

api.get('/wordforms/:id', (req, res) => {
    WordForm.find({lexiconentry: req.params.id}, (err, wordforms) => {
      if (err) {
        res.send(err);
      }
      res.json(wordforms);
    });
  });

lexicalform架构中名为WordForm的属性类似于您正在尝试的属性。因此,您可以使用此更改您的代码。

api.get('/wordforms/:id', (req, res) => {
    WordForm.find({lexicalform: req.params.id}, (err, wordforms) => {
      if (err) {
        res.send(err);
      }
      res.json(wordforms);
    });
  });