created controller to show blog photo

server/controllers/blog.js

@@ -257,3 +257,16 @@ exports.update = (req, res) => {
         });
     });
 };
+
+exports.photo =(req,res)=>{
+    const slug = req.params.slug.toLowerCase();
+    Blog.findOne({slug}).select("photo").exec((err,blog)=>{
+        if (err || !blog) {
+            return res.status(400).json({
+                error: errorHandler(err)
+            })
+        }
+        res.set('Content-Type',blog.photo.contentType)
+        return res.send(blog.photo.data);
+    })
+}

server/routes/blog.js

@@ -1,6 +1,6 @@
 const express = require('express');
 const router = express.Router();
-const {create ,list,bloglistsallCategoriesTags,read,remove,update} = require("../controllers/blog.js");
+const {create ,list,bloglistsallCategoriesTags,read,remove,update,photo} = require("../controllers/blog.js");
 const {requireLogin,adminAuthenticationMiddleware} = require("../controllers/userAuthentication.js");
 
 router.post('/blog',requireLogin,adminAuthenticationMiddleware,create);
@@ -9,6 +9,7 @@ router.post('/bloglists-categories-taglists',bloglistsallCategoriesTags);
 router.get('/blog/:slug',read);
 router.delete('/blog/:slug',requireLogin,adminAuthenticationMiddleware,remove);
 router.put('/blog/:slug',requireLogin,adminAuthenticationMiddleware,update);
+router.get('/blog/photo/:slug',photo);
 
 
 module.exports = router;