creating tagSchema model and tag controller and handling errors and a…

…voiding duplicate tag in the backend

server/controllers/tag.js

@@ -0,0 +1,61 @@
+const Tag = require("../models/tagSchema");
+const slugify = require("slugify");
+const {errorHandler} = require("../helpers/databaseErrorHandler")
+
+exports.create = (req,res)=>{
+    const {name} = req.body
+    let slug = slugify(name).toLowerCase()
+
+    let tag = new Tag({name,slug})
+
+    tag.save((err,data)=>{
+        if (err){
+            return res.status(400).json({
+                error:errorHandler(err)
+            })
+        }
+        res.json(data)
+    })
+};
+
+exports.list = (req,res)=>{
+    Tag.find({}).exec((err,data)=>{
+        if (err){
+            return res.status(400).json({
+                error:errorHandler(err)
+            })
+        }
+        res.json(data)
+    });
+};
+
+
+exports.read =(req,res)=>{
+    const slug = req.params.slug.toLowerCase()
+
+    Tag.findOne({slug}).exec((err,tag)=>{
+        if (err){
+            return res.status(400).json({
+                error:errorHandler(err)
+            })
+        }
+        res.json(tag)
+    });
+}; 
+
+
+
+exports.remove =(req,res)=>{
+    const slug = req.params.slug.toLowerCase()
+
+    Tag.findOneAndRemove({slug}).exec((err,data)=>{
+        if (err){
+            return res.status(400).json({
+                error:errorHandler(err)
+            })
+        }
+        res.json({
+            message: "Tag Deleted"
+        })
+    });
+}; 

server/models/tagSchema.js

@@ -0,0 +1,20 @@
+const mongoose = require('mongoose');
+
+const TagSchema = new mongoose.Schema(
+    {
+        name: {
+            type: String,
+            trim: true,
+            required: true,
+            max: 32
+        },
+        slug: {
+            type: String,
+            unique: true,
+            index: true
+        }
+    },
+    { timestamps: true }
+);
+
+module.exports = mongoose.model("Tag", TagSchema);

server/routes/tag.js

@@ -0,0 +1,15 @@
+const express = require('express')
+const router = express.Router();
+const {create,list,read,remove} = require("../controllers/tag.js")
+const {requireLogin,adminAuthenticationMiddleware} = require("../controllers/userAuthentication.js")
+
+const {runValidation} = require("../validators")
+const {createTagValidator} = require("../validators/Tag")
+
+router.post('/tag',createTagValidator,runValidation,requireLogin,adminAuthenticationMiddleware,create);
+router.get('/taglists',list)
+router.get('/tag/:slug',read)
+router.delete('/tag/:slug',requireLogin,adminAuthenticationMiddleware,remove)
+
+  module.exports = router;
+

server/server.js

@@ -9,6 +9,7 @@ const blogRoutes = require("./routes/blog")
 const authRoutes = require("./routes/auth")
 const userRoutes = require("./routes/user")
 const categoryRoutes = require("./routes/category")
+const tagRoutes = require("./routes/tag")
 
 const app = express()
 
@@ -35,6 +36,7 @@ app.use("/api",blogRoutes);
 app.use("/api",authRoutes);
 app.use("/api",userRoutes);
 app.use("/api",categoryRoutes);
+app.use("/api",tagRoutes);
 // cors 
 app.use(cors());
 

server/validators/tag.js

@@ -0,0 +1,5 @@
+const {check} = require("express-validator");
+
+exports.createTagValidator = [
+    check('name').not().isEmpty().withMessage("hold up!! Name is required")
+];