AGENDA

Basics of Golang Basics of MongoDB Basics of React.js

Tasks

1. Create REST API in Golang using MongoDB as Database

2. Integrate API in React.js and render books in UI

Mock this https://koenig-media.raywenderlich.com/uploads/2018/12/end_product-1.png UI

03/05/2020

Getting Started with MongoDB

Install MongoDB on Mac/Windows/Linux

Download link: https://www.mongodb.com/download-center/community
Document link: https://docs.mongodb.com/manual/administration/install-community/

Start Mongod service

`brew services start mongodb-community@4.2`
`brew services stop mongodb-community@4.2`
`mongod --config /usr/local/etc/mongod.conf --fork`
`ps aux | grep -v grep | grep mongod`

Start MongoDB

`mongo`

CMD's

1. Show databases

   show dbs

2. Create Database

   use stores

3. Use Database

   use store

4. Drop Database

   db.dropDatabase()

5. Check wich DB

   db

6. Create Collections

   db.createCollection('products')

7. Show collections

   show collections

8. Insret query

   db.products.insert({
       title: 'Apple',
       details: 'More detils',
       grade: ['A', 'B', 'C', 'D'],
       tags: ['Apple', 'fruites', 'juice'],
       address:{
           pincode: 1234,
           area: "example_area"
       },
       farmers: [{
           name: 'person1',
           phno: 1234345,
       },
       {
           name: 'person2',
           phno: 12233333,
       }
       ],
       date: Date()
   })
   

   db.products.insert({
       title: 'Car',
       color: 'Red'
   })
   

9. Insert many query

   db.products.insertMany([
       {
       title: 'Mango',
       details: 'More detils',
       grade: ['A', 'B', 'C', 'D'],
       tags: ['Mango', 'fruites', 'juice'],
       address:{
           pincode: 1234,
           area: "example_area"
       },
       farmers: [{
           name: 'person1',
           phno: 1234345,
       },
       {
           name: 'person2',
           phno: 12233333,
       }
       ],
       date: Date()
   },
    {
       title: 'Apple',
       details: 'More detils',
       grade: ['A', 'B', 'C', 'D'],
       tags: ['Apple', 'fruites', 'juice'],
       address:{
           pincode: 1234,
           area: "example_area"
       },
       farmers: [{
           name: 'person1',
           phno: 1234345,
       },
       {
           name: 'person2',
           phno: 12233333,
       }
       ],
       date: Date()
   },
   ])
   
   

10. Query/Find/READ Data

    db.products.find().pretty()

11. Find particular

    db.products.find({title: 'Apple'})

12. Update

    db.products.update({title: 'Mango'}, 
        { $set: {grade:['A', 'B', 'C', 'D']}, 
        $push: { address:{ 
                pincode: 1234,
                area: "example_area"
            },
        farmers: [{
            name: 'person1',
            phno: 1234345,
        },
        {
            name: 'person2',
            phno: 12233333,
        }
        ]
        }})
    

13. UPDATE : Remove from array

    db.products.update({title: 'Mango'}, {$pull: {'farmers': {'phno': 12233333}}})

14. UPDATE : Remove feild from document

    db.products.update({title: 'Apple'}, {$unset: {'details': 1}})

    db.products.update({title: 'Mango'}, {$unset: {'details': ""}})