node.js - 尚未为模型 "ResourceSchema"注册架构。 - 巢.js

Question

大家好，我正在尝试使用 Nest js 和 mongodb 构建 api。

我正在尝试在架构之间建立关系，当我尝试从角色填充资源时出现错误

[Nest] 12308   - 2019-08-09 4:22 PM   [ExceptionsHandler] Schema hasn't been registered for model "ResourceSchema".
Use mongoose.model(name, schema) +6998ms
MissingSchemaError: Schema hasn't been registered for model "ResourceSchema".
Use mongoose.model(name, schema)

我的角色架构

import * as mongoose from 'mongoose';
import {ResourceModel} from './resourceSchema';

const Schema = mongoose.Schema;

export const RoleSchema = new Schema({
  name: {
    type: String,
    unique: true,
    required: [true, 'Role name is required'],
  },
  resources: [{
    type: mongoose.Schema.Types.ObjectId,
    ref: 'ResourceModel',
  }],
  permissions: [{type: String}],
});

我的资源架构

import * as mongoose from 'mongoose';

const Schema = mongoose.Schema;

export const ResourceSchema = new Schema({
  name: {
    type: String,
    unique: true,
    required: [true, 'Role type is required'],
  },
  routingInfo: {type: String},
  iconName: {type: String},
  iconType: {type: String},
  subResources: [{type: mongoose.Schema.Types.Mixed, ref: 'ResourceModel'}],
});

export const ResourceModel = mongoose.model('Resource', ResourceSchema);

我的角色 service.ts 填充资源数组

...

@Injectable()
export class RoleService {
  constructor(@InjectModel('roles') private readonly roleModel: Model<Role>) {
  }

  async findAll(): Promise<Role[]> {
    return await this.roleModel.find().populate({path: 'resources', Model: ResourceModel});
  }

// also tried that
 async findAll(): Promise<Role[]> {
    return await this.roleModel.find().populate({path: 'resources', Model: ResourceSchema});
  }
}

我的资源模块

import {Module} from '@nestjs/common';
import {ResourcesController} from './resources.controller';
import {ResourcesService} from './resources.service';
import {MongooseModule} from '@nestjs/mongoose';
import {ResourceSchema} from '../schemas/resourceSchema';
import {ConfigService} from '../config/config.service';
import {AuthService} from '../auth/auth.service';
import {UsersService} from '../users/users.service';
import {UserSchema} from '../schemas/userSchema';

@Module({
  imports: [MongooseModule.forFeature([{name: 'users', schema: UserSchema}]),
    MongooseModule.forFeature([{name: 'resources', schema: ResourceSchema}])],
  providers: [ResourcesService, UsersService, AuthService, ConfigService],
  controllers: [ResourcesController],
  exports: [ResourcesService],
})
export class ResourcesModule {
}

所以当我对 postman 执行 GET REQUEST 时，我收到该错误 任何人都可以告诉我做错了什么??????

感谢并离开

Answer 1

ResourceSchema 是架构，而不是模型。您需要注册它的模型，例如:

export const Resource = mongoose.model('Resource', ResourceSchema);

更改引用:

subResources: [{type: mongoose.Schema.Types.Mixed, ref: 'Resource'}],

他们将其导入到您的服务中并调用:

 return await this.roleModel.find().populate({path: 'resources', Model: Resource });

希望有帮助。