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Ruby Database CRUD

Building a CRUD App

Ruby database CRUD with Active Record handles data operations.

Introduction to Active Record

Active Record is a powerful ORM (Object-Relational Mapping) framework used in Ruby, particularly with Ruby on Rails. It simplifies interactions with databases by allowing developers to use Ruby code to perform CRUD (Create, Read, Update, Delete) operations. This tutorial will guide you through the basics of performing these operations using Active Record.

Setting Up Active Record

Before you can use Active Record, you need to set up a Ruby environment and install the necessary gems. Here’s how you can get started:

Creating a Model

In Active Record, a model represents a table in your database. To create a new model, you can use the following command:

This command will generate a model file article.rb in the app/models directory and a migration file to create the articles table in your database.

Performing Create Operations

To add a new record to the database, use the create method:

Performing Read Operations

Reading data from the database can be done in several ways. Here are some examples:

Performing Update Operations

To update an existing record, first retrieve it and then use the update method:

Performing Delete Operations

Deleting records is straightforward with the destroy method:

Conclusion

Active Record provides a simple and efficient way to manage database records in Ruby applications. By following this guide, you can perform basic CRUD operations and start building robust database-backed applications.

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