README.md

Go CRUD GraphQL API

Description

This project is a CRUD (Create, Read, Update, Delete) API built with Go, GraphQL, and PostgreSQL. It uses the gqlgen library for GraphQL and go-pg for PostgreSQL interaction. The API allows you to create and retrieve movies with a title, URL, and release date.

Features

• Create a new movie with a title, URL, and automatically generated release date.
• Retrieve all movies.

Technologies

• Go
• GraphQL
• PostgreSQL
• gqlgen
• go-pg
• godotenv

Prerequisites

• Go (version 1.16+)
• PostgreSQL
• go-pg
• gqlgen
• godotenv

Installation

1. Clone the repository:

   git clone https://github.com/your-username/go-crud-graphql.git
   cd go-crud-graphql

2. Install dependencies:

   go mod download

3. Create a PostgreSQL database:

   CREATE DATABASE your_db_name;

4. Set up environment variables:

   Create a .env file in the root directory with the following content:

   DB_USER=your_db_user
   DB_PASSWORD=your_db_password
   DB_NAME=your_db_name
   DB_HOST=localhost
   DB_PORT=5432
   

5. Create the movies table:

   CREATE TABLE movies (
       id SERIAL PRIMARY KEY,
       title TEXT NOT NULL,
       url TEXT NOT NULL,
       release_date TEXT NOT NULL
   );

6. Run the server:

   go run server.go

Usage

Once the server is running, you can access the GraphQL playground at http://localhost:8080/.

Example Mutation

To create a new movie, use the following GraphQL mutation:

mutation createMovie {
  createMovie(
    input: {
      title: "Rise of GraphQL Warrior Pt1"
      url: "https://riseofgraphqlwarriorpt1.com/"
    }
  ){
    id
    releaseDate
  }
}

To update a movie, use the following GraphQL mutation:

mutation {
  updateMovie(input: {
    id: 7
    title: "GraphQL in Action (Updated)"
  }) {
    id
    title
    url
    releaseDate
  }
}

To delete a movie, use the following GraphQL mutation:

mutation {
  deleteMovie(id: 1)
}

To get all movie, use the following GraphQL mutation:

query {
  movies {
    id
    title
    url
    releaseDate
  }
}

To get movie by id, use the following GraphQL mutation:

query {
  movie(id: 1) {
    id
    title
    url
    releaseDate
  }
}