所以我有2个模式,游戏和类别:
const mongoose = require('mongoose');
const Schema = mongoose.Schema;
const gameSchema = new Schema({
title: {
type: String,
required: true
},
description: {
type: String,
required: true
},
category: [{
type: Schema.Types.ObjectId,
ref: 'category'
}],
});
module.exports = { Game: mongoose.model('game', gameSchema) };
const mongoose = require('mongoose');
const Schema = mongoose.Schema;
const categorySchema = new Schema({
title: {
type: String,
required: true
},
});
module.exports = { Category: mongoose.model('category', categorySchema) };
我正在尝试保存包含多个类别的新游戏:
const newGame = new Game({
title: req.body.title,
description: req.body.postDescription,
category: req.body.category,
});
newGame.save().then((game, err) => {
if (err) {
console.log(err)
} else {
req.flash('success-message', 'New Game Created');
res.redirect('/admin/games');
}
});
这是我的前端代码(把手)。我正在为jquery使用标签输入插件来获取类别数组
<label for="category">Category</label>
<select multiple name="category" id="category" class="cat form-control">
{{#select game.category}}
{{#each categories}}
<option value="{{title}}">{{title}}</option>
{{/each}}
{{/select}}
</select>
错误:
UnhandledPromiseRejectionWarning: ValidationError: game validation failed: category: Cast to Array failed for value "[ 'ACTION','MOBILE','RPG' ]" at path "category"
我希望帮助您理解为什么会发生此错误,谢谢。
👨🏫 您可以尝试 below下面的此代码以保存您的游戏和类别。
const jobQuerys = [];
const { category, title, postDescription: description } = req.body;
// save category
category.forEach(categoryName=> {
const category = new Category({ title: categoryName })
jobQuerys.push(category.save());
});
// get all category was saved
const categories = await Promise.all(jobQuerys);
// category id temporary
const categoryId = [];
// add category._id to categoriId temporary
categories.forEach(category => {
categoryId.push(category._id);
});
// save game with categoryId
const game = new Game({ title, description, category: categoryId });
const result = await game.save();
// show result
console.log(result);
💡请确保,因为我们在此代码中使用了
await
,所以在您的函数中,请添加async
。
希望它能对您有所帮助。