Sequelize Associations 没有出现在 pgAdmin 中

Question

我正在为 Instagram 等社交媒体应用程序创建 restApi 端点。

有4张桌子

1. 用户
2. Post
3. post赞
4. post媒体

协会... 单个用户有许多post个， 单个 post 属于一个用户， 一个post有很多post赞， 一个 post 有许多 post 个媒体， 一个post赞属于一个post，属于一个用户， post媒体属于一个 post,

如果您还有点不清楚，请发表评论，我们将不胜感激。

models/user.js

'use strict';
const {
  Model
} = require('sequelize');
module.exports = (sequelize, DataTypes) => {
  class User extends Model {
    /**
     * Helper method for defining associations.
     * This method is not a part of Sequelize lifecycle.
     * The `models/index` file will call this method automatically.
     */
    static associate(models) {
      // define association here
      User.hasMany(models.Post, {
        foreignKey: 'user_id',
        as: 'posts',
        onDelete: 'CASCADE',
      });
      User.hasMany(models.postLikes, {
        foreignKey: 'user_id',
        as: 'postLikes',
        onDelete: 'CASCADE',
      });
    }
  };
  User.init({
    profile_img: DataTypes.STRING,
    firstname: DataTypes.STRING,
    lastName: DataTypes.STRING,
    email: DataTypes.STRING,
    phone: DataTypes.STRING,
    password: DataTypes.STRING,
    dob: DataTypes.STRING,
    gender: DataTypes.ENUM('male', 'female'),
    token: DataTypes.STRING,
    is_deleted: DataTypes.BOOLEAN,
  }, {
    sequelize,
    modelName: 'User',
  });
  return User;
};

models/post.js

'use strict';
const {
  Model
} = require('sequelize');
module.exports = (sequelize, DataTypes) => {
  class Post extends Model {
    /**
     * Helper method for defining associations.
     * This method is not a part of Sequelize lifecycle.
     * The `models/index` file will call this method automatically.
     */
    static associate(models) {
      // define association here
      Post.hasMany(models.postLikes, {
        foreignKey: 'post_id',
        as: 'postLikes',
        onDelete: 'CASCADE',
      });
      Post.hasMany(models.postMendia, {
        foreignKey: 'post_id',
        as: 'postMedia',
        onDelete: 'CASCADE',
      })
    }
  };
  Post.init({
    description: DataTypes.STRING,
    user_id: DataTypes.INTEGER,
    is_deleted: DataTypes.BOOLEAN,
  }, {
    sequelize,
    modelName: 'Post',
  });
  return Post;
};

models/postLikes.js

'use strict';
const {
  Model
} = require('sequelize');
module.exports = (sequelize, DataTypes) => {
  class postLikes extends Model {
    /**
     * Helper method for defining associations.
     * This method is not a part of Sequelize lifecycle.
     * The `models/index` file will call this method automatically.
     */
    static associate(models) {
      // define association here
      postLikes.belongsTo(models.Post, {
        foreignKey: 'post_id',
        as: 'post',
      });
      postLikes.belongsTo(models.User, {
        foreignKey: 'user_id',
        as: 'user',
      })
    }
  };
  postLikes.init({
    post_id: DataTypes.INTEGER,
    user_id: DataTypes.INTEGER
  }, {
    sequelize,
    modelName: 'postLikes',
  });
  return postLikes;
};

models/postMedia.js

'use strict';
const {
  Model
} = require('sequelize');
module.exports = (sequelize, DataTypes) => {
  class postMedia extends Model {
    /**
     * Helper method for defining associations.
     * This method is not a part of Sequelize lifecycle.
     * The `models/index` file will call this method automatically.
     */
    static associate(models) {
      // define association here
      postMedia.belongsTo(models.Post, {
        foreignKey: 'post_id',
        as: 'post'
      })
    }
  };
  postMedia.init({
    url: DataTypes.STRING,
    post_id: DataTypes.INTEGER,
    type: DataTypes.ENUM('image', 'video')
  }, {
    sequelize,
    modelName: 'postMedia',
  });
  return postMedia;
};

在上述所有模型中创建关联后，我正在运行命令 sequelize db:migrate

但是当我打开 pgAdmin4 控制台时，我没有看到任何外键。

P.S。我指的是这篇文章https://dev.to/nedsoft/getting-started-with-sequelize-and-postgres-emp

Answer 1

在上面给出的博客中，那个人从来没有告诉我们必须添加

      references: {
          model: {
            tableName: 'Users',
            schema: 'public'
          },

迁移内部....

参考此页面...只需按 CTRL+F 选择页面上的外键，您就会到达那里。 Sequelize DOCS

为此浪费了 4 个多小时