Pagination

Small commit due to laptop concerns

controllers/bootcamps.js

@@ -13,7 +13,7 @@ exports.getBootcamps = asyncHandler(async (req, res, next) => {
  const reqQuery = { ...req.query }
 
  // Fiels to exclude
- const removeFields = ['select, sort']
+ const removeFields = ['select', 'sort', 'limit']
 
  // Loop over remove fields and delete them from reqQuery
  removeFields.forEach(param => delete reqQuery[param])
@@ -42,16 +42,43 @@ exports.getBootcamps = asyncHandler(async (req, res, next) => {
  query = query.sort('-createdAt')
  }
 
+ // Pagination
+ const page = parseInt(req.query.page, 10) || 1
+ const limit = parseInt(req.query.limit, 10) || 25;
+ const startIndex = (page - 1) * limit
+ const endIndex = page * limit
+ const total = await Bootcamp.countDocuments();
+
+ query = query.skip(startIndex).limit(limit)
+
  // Executing Query
  const bootcamp = await query
 
+ // Pagination result
+ const pagination = {}
+
+ if (endIndex < total) {
+ pagination.next = {
+ page: page + 1,
+ limit
+ }
+ }
+
+ if (startIndex > 0) {
+ pagination.prev = {
+ page: page - 1,
+ limit
+ }
+ }
+
  console.log(queryStr)
  res
  .status(201)
  .json({
  success: true,
  count: bootcamp.length,
- data: bootcamp
+ pagination,
+ data: bootcamp,
  })
 })
 

middleware/async.js

@@ -1,3 +1,6 @@
+// Callsback the controller function
+// If promise is not resolved, try catching error
+
 const asyncHandler = fn => (req, res, next) =>
  Promise.resolve(fn(req, res, next)).catch(next)
 

model/Bootcamp.js

@@ -2,7 +2,6 @@ const mongoose = require('mongoose')
 const slugify = require('slugify')
 const geocoder = require('../utils/geocoder')
 
-
 const BootcampSchema = new mongoose.Schema({
  name: {
  type: String,

model/Courses.js

@@ -0,0 +1,38 @@
+const mongoose = require('mongoose')
+
+const CourseSchema = new mongoose.Schema({
+ title: {
+ type: String,
+ trim: true,
+ required: [true, 'Please add a course title']
+ },
+ description: {
+ type: String,
+ required: [true, 'Please add a description']
+ },
+ weeks: {
+ type: String,
+ required: [true, 'Please add number of weeks']
+ },
+ tuition: {
+ type: Number,
+ required: [true, 'Please add a tuition cost']
+ },
+ minimumSkill: {
+ type: String,
+ required: [true, 'Please add a minimum skill'],
+ enum: ['beginner', 'intermediate', 'advanced']
+ },
+ createdAt: {
+ type: Date,
+ default: Date.now
+ },
+ bootcamp: {
+ type: mongoose.Schema.ObjectId,
+ // Reference to Schema, not database
+ ref: 'Bootcamp',
+ required: true
+ }
+})
+
+module.exports = mongoose.model('Courses', CourseSchema)

seeder.js

@@ -7,17 +7,21 @@ dotenv.config({ path: './config/config.env' })
 
 // Load models
 const Bootcamp = require('./model/Bootcamp')
+const Courses = require('./model/Courses')
 
 // Connect to database
 mongoose.connect(process.env.MONGO_URI)
 
 // Read JSON files
 const bootcamps = JSON.parse(fs.readFileSync(`${__dirname}/_data/bootcamps.json`, 'utf-8'));
+const courses = JSON.parse(fs.readFileSync(`${__dirname}/_data/courses.json`, 'utf-8'));
+
 
 // Import into DB
 const importData = async () => {
  try {
  await Bootcamp.create(bootcamps)
+ await Courses.create(courses)
  console.log('Data imported...'.green.inverse)
  } catch (error) {
  console.error(error)
@@ -28,6 +32,7 @@ const importData = async () => {
 const deleteData = async () => {
  try {
  await Bootcamp.deleteMany()
+ await Courses.deleteMany()
  console.log('Data destroyed...'.red.inverse)
  } catch (error) {
  console.error(error)