[FEAT] #2 - 취업교육리스트목록 페이지네이션 구현

src/app/JobEdu/jobEduController.js

@@ -1,14 +1,39 @@
 const jobEduProvider = require("./jobEduProvider");
 const baseResponse = require("../../../config/baseResponseStatus");
-const {response, errResponse} = require("../../../config/response");
+const { response, errResponse } = require("../../../config/response");
 
 export const getJobEduList = async (req, res) => {
-    try {
-      const jobEduListResult = await jobEduProvider.retrieveJobEduList();
-
-      return res.send(response(baseResponse.SUCCESS, jobEduListResult));
-    } catch (error) {
-      console.error(error);
-      return res.send(errResponse(baseResponse.DB_ERROR));
-    }
-  };
+  try {
+    // 페이지 크기
+    let perPage = req.query.perPage;
+    // 페이지 번호
+    let page = req.query.page;
+
+    // 페이지 크기가 없으면 10으로 설정
+    if (perPage == undefined || typeof perPage == "undefined" || perPage == null) {
+		perPage = 10;
+	} else {
+		perPage = parseInt(perPage);
+	}
+
+    // 페이지 번호가 없으면 0으로 설정
+	if (page == undefined || typeof page == "undefined" || page == null) {
+		page = 0;
+	} else {
+		page = parseInt(page);
+	}
+
+    const jobEduListResult = await jobEduProvider.retrieveJobEduList(perPage, page);
+
+    return res.send(response(baseResponse.SUCCESS, jobEduListResult));
+  } catch (error) {
+    console.error(error);
+    return res.send(errResponse(baseResponse.DB_ERROR));
+  }
+};
+
+export const getJobEduListCount = async (req, res) => {
+    const jobEduListCountResult = await jobEduProvider.retrieveJobEduListCount();
+
+    return res.send(response(baseResponse.SUCCESS, jobEduListCountResult));
+};

src/app/JobEdu/jobEduDao.js

@@ -1,16 +1,29 @@
 const { logger } = require("../../../config/winston");
 import pool from "../../../config/database";
 
-export const selectJobEduList = async function () {
+export const selectJobEduList = async function (perPage, offset) {
   const query = `
-    select * from job_educations limit 3;
-    `;
+  SELECT * FROM job_educations ORDER BY posted_at DESC LIMIT ${perPage} OFFSET ${offset}`;
 
   try {
     const result = await pool.query(query);
-    return result;
+    return result.rows;
   } catch (error) {
     logger.error("쿼리 실패");
     throw error;
   }
 };
+
+export const selectJobEduListCount = async function () {
+    const query = `
+        select count(*) as total_count from job_educations;
+    `;
+
+    try {
+        const result = await pool.query(query);
+        return result;
+    } catch (error) {
+        logger.error("쿼리 실패");
+        throw error;
+    }
+};

src/app/JobEdu/jobEduProvider.js

@@ -3,13 +3,26 @@ const jobEduDao = require("./jobEduDao");
 
 const { logger } = require("../../../config/winston");
 
-export const retrieveJobEduList = async function () {
-    try {
-      const result = await jobEduDao.selectJobEduList();
-      return result;
-    } catch (error) {
-      logger.error("DB 연결 실패");
-      throw error;
-    }
-  };
-
+export const retrieveJobEduList = async function (perPage, page) {
+  try {
+    const offset = (page - 1) * perPage;
+    const result = await jobEduDao.selectJobEduList(perPage, offset);
+    return result;
+  } catch (error) {
+    logger.error("DB 연결 실패");
+    throw error;
+  }
+};
+
+// 취업지원 데이터 갯수 세는 함수
+export const retrieveJobEduListCount = async function () {
+  try {
+    const result = await jobEduDao.selectJobEduListCount();
+
+    return parseInt(result.rows[0]["total_count"]);
+  } catch (error) {
+    logger.error("DB 연결 실패");
+    logger.error(error);
+    throw error;
+  }
+};

src/app/JobEdu/jobEduRoute.js

@@ -4,4 +4,9 @@ module.exports = function(app){
     // 1. 취업교육 목록 API
     app.get('/app/jobEdu', jobEdu.getJobEduList);
 
+
+
+    // 취업지원 목록 개수 API
+    app.get('/app/jobEdu/count', jobEdu.getJobEduListCount)
+
 };