Javascript 如何检查当前用户是否喜欢帖子

我如何才能检查当前用户是否喜欢该帖子。理想情况下，这类似于喜欢instagram上的帖子。心是红色的，表示你喜欢它

如何才能为后端添加类似的功能

我知道后端会有一个布尔值，表示用户有自己的帖子。我正在使用sequelize，考虑到我的模型，我应该怎么做才能使这个功能正常工作

理想情况下，post中的liked列应该表明我是否喜欢post

req.session.user.id

获取当前用户

邮政管理员

 getPosts: async (req: Request, res: Response) => {
    await models.Post.findAll({
      include: [
        { model: models.User, as: "author", attributes: ["username"] },
        { model: models.Likes }
      ],
      order: [["createdAt", "DESC"]],
      limit: 6
    }).then(posts => {
      res.json(posts);
    });
  },

Post（模型）

喜欢（模型）

差不多

const iLikeIt=Like.findOne（{其中：{
资源ID:posted，
userId:req.session.user.id，
}})
如果（iLikeIt）{
//我喜欢它
}否则{
//我不喜欢它
}

我将尝试此功能，此功能应放在何处？

"use strict";
module.exports = (sequelize, DataTypes) => {
    var Post = sequelize.define("Post", {
        title: DataTypes.STRING,
        postContent: DataTypes.STRING,
        liked: {
            type: DataTypes.BOOLEAN,
            allowNull: false,
            defaultValue: false
        },
        likeCounts: {
            type: DataTypes.INTEGER,
            allowNull: false,
            defaultValue: 0
        },
        authorId: DataTypes.INTEGER
    }, {});
    Post.associate = function (models) {
        Post.belongsTo(models.User, {
            as: "author",
            foreignKey: "authorId",
            onDelete: "CASCADE"
        });
        Post.hasMany(models.Likes, {
            foreignKey: "resourceId",
            timestamps: false,
            targetKey: "id",
            onDelete: "CASCADE"
        });
    };
    Post.prototype.likedByMe = postId => { };
    return Post;
};
//# sourceMappingURL=post.js.map

"use strict";
module.exports = (sequelize, DataTypes) => {
    var Likes = sequelize.define("Likes", {
        userId: DataTypes.INTEGER,
        resourceId: DataTypes.INTEGER,
        likeByMe: {
            type: DataTypes.BOOLEAN,
            defaultValue: false,
            allowNull: false
        }
    });
    Likes.associate = function (models) {
        // associations can be defined here
        Likes.belongsTo(models.User, {
            foreignKey: "userId",
            timestamps: false,
            onDelete: "CASCADE"
        });
        Likes.belongsTo(models.Post, {
            foreignKey: "resourceId",
            timestamps: false,
            onDelete: "CASCADE",
            targetKey: "id"
        });
    };
    return Likes;
};
//# sourceMappingURL=likes.js.map