使用typegoose将项目添加到Ref数组 [英] Add items to an Array of Ref with typegoose

问题描述

我有2个类扩展了Typegoose(Item和Player)

I got 2 classes extending Typegoose (Item and Player)

在Player类中，我得到了Ref<Item>[]

    @arrayProp({itemsRef: Item})
    items?: Ref<Item>[];

在我的PlayersService中，我使用此方法来推送Item:

In my PlayersService, i use this method to push an Item:

    async pushItem( itemPlayerDto: {playerId: string, item: Item}) : Promise<Player> {
        let player = await this.findById(itemPlayerDto.playerId);
        player.items.push(itemPlayerDto.item);
        return await new this.playerModel(player).save();
}

但是当我检索到Players时，他们的items并没有被添加，只是一个Array of ObjectId.

But when i retrieve Players, their items are not pupolated, only an Array of ObjectId.

    async findAll(): Promise<Player[]> | null {
        return await this.playerModel.find().exec();
} 

PS:我正在将Typegoose与nestjs和netsjs-typegoose一起使用

PS: i'm using Typegoose with nestjs and netsjs-typegoose

推荐答案

好的，这就是从typegoose类填充Ref项目的方法(使用:populate方法):

Ok so this is how you can populate a Ref item from a typegoose class (use: populate method) :

async findByName(playerName: string): Promise<Player> | null {
    let player = await this.playerModel.findOne({'displayName': playerName}).exec();
    let playerWithItems = await player.populate({
        path: 'items',
        model: 'Item'
    }).execPopulate();
    return playerWithItems;
}

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