265-like 테이블 생성 및 like/like cancel 구현

Author: Jihyun247

controller/explorationController.js

@@ -269,6 +269,56 @@ module.exports = {
             return res.status(code.INTERNAL_SERVER_ERROR).send(util.fail(code.INTERNAL_SERVER_ERROR, message.INTERNAL_SERVER_ERROR));
         }
     },
+
+    // 좋아요, 좋아요 취소
+    likeOrCancel : async (req, res) => {
+
+        const answer_id = req.params.answerId;
+        const user_id = req.decoded.id;
+
+        if (! answer_id) {
+            return res.status(code.BAD_REQUEST).send(util.fail(code.BAD_REQUEST, message.NULL_VALUE));
+        }
+        try {
+
+            const answer = await Answer.findByPk(answer_id);
+            if(! answer) {
+                return res.status(code.BAD_REQUEST).send(util.fail(code.BAD_REQUEST, message.INVALID_ANSWER_ID));
+            }
+
+            // 좋아요 유무 확인
+            const isLiked = await Like.findAll({
+                where : {
+                    answer_id,
+                    user_id,
+                }
+            });
+
+            // 이미 좋아요 했을 시 좋아요 취소
+            if (isLiked.length > 0) {
+                const like = await Like.destroy({
+                    where : {
+                        user_id,
+                        answer_id
+                    }
+                });
+                return res.status(code.OK).send(util.success(code.OK, message.LIKE_CANCEL_SUCCESS));
+            }
+
+            // 좋아요 안했을 시 좋아요 생성
+            const like = await Like.create({
+                user_id,
+                answer_id
+            });
+            return res.status(code.OK).send(util.success(code.OK, message.LIKE_SUCCESS));
+
+        } catch (err) {
+            console.error(err);
+            return res.status(code.INTERNAL_SERVER_ERROR).send(util.fail(code.INTERNAL_SERVER_ERROR, message.INTERNAL_SERVER_ERROR));
+        }
+    },
+
+
     // 카테고리 리스트 가져오기
     getCategories: async (req, res) => {
         try {

models/index.js

@@ -61,6 +61,10 @@ db.User.belongsToMany(db.User, { through: 'Follow', as: 'Follower', foreignKey :
 db.User.belongsToMany(db.User, { through: 'RecentSearch', as: 'Searched', foreignKey: 'searched_id'});
 db.User.belongsToMany(db.User, { through: 'RecentSearch', as: 'Searcher', foreignKey : 'user_id' });
 
+/* User : Certification => like */
+db.User.belongsToMany(db.Answer, { through: 'Like', as: 'Liked', foreignKey: 'user_id' });
+db.Answer.belongsToMany(db.User, { through: 'Like', as: 'Liker', foreignKey: 'answer_id'});
+
 db.User.hasMany(db.AnswerSearch, {foreignKey: 'user_id'});
 db.AnswerSearch.belongsTo(db.User, {foreignKey: 'user_id'});
 

models/like.js

@@ -0,0 +1,25 @@
+const Answer = require('./answer')
+const User = require('./user')
+
+module.exports = (sequelize, DataTypes) => {
+    return sequelize.define('Like', {
+        user_id: { // 좋아요 한 사용자
+            type: DataTypes.INTEGER,
+            reference: {
+                model: User,
+                key: 'id',
+            }
+        },
+        answer_id: { // 좋아요 달린 인증게시물
+            type: DataTypes.INTEGER,
+            reference: {
+                model: Answer,
+                key: 'id',
+            }
+        }
+    }, {
+        freezeTableName: true,
+        timestamps: true,
+        underscored: true,
+    });
+};

modules/responseMessage.js

@@ -88,6 +88,10 @@ module.exports = {
     DO_SCRAP_SUCCESS: "스크랩 성공",
     UNDO_SCRAP_SUCCESS: "스크랩 취소 성공",
 
+    /* */
+    LIKE_SUCCESS : "좋아요 성공",
+    LIKE_CANCEL_SUCCESS : "좋아요 취소 성공",
+
     /* 댓글 */
     POST_COMMENT_SUCCESS: "댓글 생성하기 성공",
     POST_COMMENT_BLOCKED : "댓글이 허용되지 않은 답변입니다",

routes/exploration/index.js

@@ -11,6 +11,7 @@ router.get('/all', authUtil.checkToken, exController.getExpAnswersWithoutLen);
 router.get('/:questionId', authUtil.checkToken, exController.getSpecificAnswers);
 router.get('/all/:questionId', authUtil.checkToken, exController.getSpecificAnswersWithoutLen);
 router.put('/:answerId', authUtil.checkToken, exController.doOrCancelScrap);
+router.put('/like/:answerId', authUtil.checkToken, exController.likeOrCancel);
 
 
 module.exports = router;