typescript - 错误 : Model not initialized: "Model" needs to be added t o a Sequelize instance before "call" can be called.(Sequelize-typescript)

Question

作者.ts

import {Table, Model, Column, DataType} from 'sequelize-typescript'

@Table
export class Author extends Model<Author> {

constructor(){
    super();
}

@Column(DataType.STRING)
fname: string

@Column(DataType.STRING)
lname: string

}

应用.ts

import {Sequelize} from 'sequelize-typescript';
import { customer } from './model/customer';
import { Author } from './model/Author';

export  class SQLRepo {

     repo:Sequelize = null;

     constructor(){
         this.connectDb();
     }

  connectDb(): any {

    this.repo =  new Sequelize({
        database: 'postgres',
        dialect: 'postgres',
        host: 'localhost',
        username: 'postgres',
        password: 'xxxxx',
        storage: 
               'D:/Sequalize/assosiation/database.sqlite',
        modelPaths: [__dirname + '/models'],
        define: {
            underscored: false,
            freezeTableName: false,
            timestamps: false
        }
     });

     this.repo.addModels([Author])

     this.repo.
     authenticate().
     then(function(){
         console.log("database connected ...")

         new Author({fname: 'karim' , lname: 'mirazul'}).save();

     }).
     catch(function(error){
         console.log("Database catch block : "+ error)
     })
   }
}
new SQLRepo();

创建 SQLRepo 调用对象，这样我就可以成功连接到数据库，但在连接数据库后显示错误..当它尝试将数据插入 Author

时

它给我这个输出:

正在执行(默认):SELECT 1+1 AS result数据库连接...数据库捕获 block :

Error: Model not initialized: "Model" needs to be added to
 a Sequelize instance before "call" can be called.

Answer 1

从模型中删除构造函数调用

import {Table, Model, Column, DataType} from 'sequelize-typescript'

@Table
export class Author extends Model<Author> {

  // constructor(){
  //     super();
  // }

  @Column(DataType.STRING)
  fname: string

  @Column(DataType.STRING)
  lname: string

}

你不能使用构造函数，因为它被 sequelize 用于内部事物

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