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debug rails applicatioin in ruby on rails

To be able to debug an application is very important to understand the flow of an application's logic and data. It helps solving logical bugs and adds value to the programming experience and code quality. Two popular gems for debugging are debugger (for ruby 1.9.2 and 1.9.3) and byebug (for ruby >= 2.x).

For debugging .rb files, follow these steps:

Add debugger or byebug to the development group of Gemfile
Run bundle install
Add debugger or byebug as the breakpoint
Run the code or make request
See the rails server log stopped at the specified breakpoint
At this point you can use your server terminal just like rails console and check the values of variable and params
For moving to next instruction, type next and press enter
For stepping out type c and press enter

If you want to debug .html.erb files, break point will be added as <% debugger %>

Ruby On Rails Basics

Ruby On Rails Routing

ActiveRecord Migrations

ActivRecord Validations

ActiveRecord Associations

ActiveRecord Associations

ActiveRecord Query Interface

Naming Conventions

User Authentication

Ruby on Rails Views

ActiveRecord

Configure Angular

I18n-Internationalization

Authorization with CanCan

ActiveRecord Locking

Ruby on Rails ActionMailer

Upgrading Rails

Shallow Routing

Class Organization

Ruby on Rails ActiveJob

Tools Code Optimization and Cleanup

Change a default application enviornment

Ruby on Rails Engine - Modular

Asset Pipeline

Change Default Timezone

Ruby on Rails Rails 5

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ActiveRecord Transactions

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Model states:AASM

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Ruby on Rails Factory Girl

Rails frameworks over the years

Import whole CSV files from specific folder

Multipurpose ActiveRecord columns

Active Model Serializers

Rails5 API Authetication

Testing Applications

Payment feature in rails

Rails On docker

Authenticate Api using Devise

Ruby on Rails Prawn PDF

Ruby on Rails ActiveSupport

Single Table Inheritance

RSpec and Rails

Ruby on Rails Form Helpers

Ruby on Rails Configuration

React with Rails using react-rails gem

Deploying a Rails app on Heroku

Securely storing authentication keys

Decorator pattern

Ruby on Rails Rails logger

Ruby on Rails Gems

Ruby on Rails File Uploads

Ruby on Rails Caching

Ruby on Rails Rails-API

ActiveRecord Transactions

Ruby on Rails Configuration

Using GoogleMaps with Rails

Safe Constantize

Rails generate commands

Ruby on Rails ActiveModel

Ruby on Rails Add Admin Panel

Integrating React.js with Rails Using Hyperloop

Ruby on Rails
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Cookbook-Advanced rails recipes/learnings and coding techniques

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