如何在 Keystone.js 中获取关系模型答案

【问题标题】：How to get relationship model in Keystone.js如何在 Keystone.js 中获取关系模型
【发布时间】：2017-04-18 02:24:41
【问题描述】：

所以我尝试从“TestGenerator”模型中的“Sentence”模型中获取“Pronouns”模型。我有身份证，但没有模特。

TestGenerator 模型

var TestGenerator = new keystone.List('TestGenerator', {
    map: { name: 'title' },
    autokey: { path: 'slug', from: 'title', unique: true }
});

TestGenerator.add({
    title: { type: String, required: true },
    sentences: { type: Types.Relationship, ref: 'Sentence', many: true },
});

TestGenerator.register();

var Sentence = new keystone.List('Sentence', {
    map: { name: 'title' },
    autokey: { path: 'slug', from: 'title', unique: true }
});

句子模型

Sentence.add({
    title: { type: String, required: true },
    pronouns: { type: Types.Relationship, ref: 'Pronoun', many: true },
    verbs: { type: Types.Relationship, ref: 'Verb', many: true },
});

Sentence.relationship({ ref: 'TestGenerator', path: 'sentences' });

Sentence.register();

名词模型

var Pronoun = new keystone.List('Pronoun', {
    map: { name: 'english' },
    autokey: { path: 'slug', from: 'english', unique: true }, 
});

Pronoun.add({
    english: { type: String },
    russian: { type: String }
});

Pronoun.relationship({ ref: 'Sentence', path: 'pronouns' });

Pronoun.register();

还有我的控制器

view.on('init', function (next) {

    var q = keystone.list('TestGenerator').model.findOne({
        slug: locals.filters.test_genetation,
    }).populate('sentences');

    q.exec(function (err, result) {
        locals.testGenerator = result;
        locals.current_sentence = result.sentences[0];
        locals.data.englishSentence = locals.current_sentence.pronouns;
        console.log(locals.data.englishSentence);
        next(err);
    });
});

而“locals.data.englishSentence”返回

["5739bd696ef7d78d16e9e0e5","573ac7645e3d7d7210f1c4be"]

那么我该如何解决呢？不明白。

【问题讨论】：

标签： javascript mongodb relationship keystonejs

【解决方案1】：

这与猫鼬有关，实际上与 Keystone 无关。 Mongoose 不提供大量人口，您需要一个单独的插件，例如mongoose-deep-populate

【讨论】：

【解决方案2】：

您是否尝试过在populate() 调用中明确包含pronouns？

var q = keystone.list('TestGenerator').model.findOne({
    slug: locals.filters.test_genetation,
})
  .populate('sentences sentences.pronouns')
  .exec(function (err, result) {
    ...
  });

【讨论】：