nestjs cats CRUD application example with graphql mysql Apollo sequelize implementation

you need node installed first got to https://nodejs.org/en/download/ and follow instructions there to install node

git clone https://github.com/nelsonBlack/nestjs-mysql-graphql-sequelize-typescript.git

cd nestjs-mysql-graphql-sequelize-typescript

go to /src/database/database.providers.ts and set your mysql database credentials and db

const sequelize = new Sequelize({
        dialect: 'mysql',
        host: 'localhost',
        port: 3306,
        username: 'root',
        password: '',
        database: 'cats',
      });  

npm install

npm start

navigate to browser http://localhost:3000/graphiql

##To Post data to db

mutation{
  createCat(name:"jingo",breed:"boerboel",age:23){
    name
    breed
    age
  }
}

###to get data

query {
  getCats{
    id
    name
    breed
    age
    
  }
}

###Delete cat

mutation{
  deleteCat(id:1){
    age
    name
    
    
  }
}

###Edit cat

mutation{
  updateCat(id:1,name:"tosh"){
    age
    name
    
    
  }
}

###Get cat by id

{
  cat(id:"2"){
    age
    name
    
    
  }
}

response example

{
  "data": {
    "cat": {
      "age": 23,
      "name": "jingo"
    }
  }
}

###Subscription- done with apollo listen for create cat in a new window of graphiql http://localhost:3000/graphiql add the subscription below then post data to db using above mentioned mutation

subscription {
  catCreated{
    breed
    age
    name
    id
  }
}

response example

{
  "catCreated": {
    "breed": "sdfs",
    "age": 5252,
    "name": "dfgsdf",
    "id": 65
  }
}

• Nestjs

Add more relations -Done Add edit mutation -Done

• Nelson Bwogora - Nestjs

free

• Nestjs Fraternity for building and maintaining this great framework read more at https://docs.nestjs.com/