Get cohort based on id

I created query function which search for cohort based on id which came from params, and I created the necessary middleware for this function to work in addition to handling the required /cohort/:cohortid route

Relates #19

server/controllers/index.js

@@ -1,7 +1,12 @@
 const router = require('express').Router();
+const {
+  cohort: { getSpecificCohort },
+} = require('./routes/user');
 
 router.get('/', (req, res) => {
   res.send('<h1>CA WIKI</h1>');
 });
 
+router.get('/cohort/:cohortid', getSpecificCohort);
+
 module.exports = router;

server/controllers/routes/user/cohort/getSpecificCohort.js

@@ -0,0 +1,9 @@
+const {
+  cohort: { getSpecificCohort },
+} = require('../../../../database/queries');
+
+exports.getSpecificCohort = (req, res) => {
+  getSpecificCohort(req.params.cohortid)
+    .then(({ rows }) => res.json(rows))
+    .catch((err) => console.error(err));
+};

server/controllers/routes/user/cohort/index.js

@@ -0,0 +1,3 @@
+const { getSpecificCohort } = require('./getSpecificCohort');
+
+module.exports = { getSpecificCohort };

server/controllers/routes/user/index.js

@@ -0,0 +1,3 @@
+const cohort = require('./cohort');
+
+module.exports = { cohort };

server/database/queries/cohort/getSpecificCohort.js

@@ -0,0 +1,4 @@
+const connection = require('../../config/connection');
+
+exports.getSpecificCohort = (id) =>
+  connection.query('select * from cohort where id = $1', [`${id}`]);

server/database/queries/cohort/index.js

@@ -0,0 +1,3 @@
+const { getSpecificCohort } = require('./getSpecificCohort');
+
+module.exports = { getSpecificCohort };

server/database/queries/index.js

@@ -0,0 +1,3 @@
+const cohort = require('./cohort');
+
+module.exports = { cohort };