Ruby on Rails Expert-Ruby on Rails Assistance

Example

Improving the performance of a Rails application by identifying N+1 query problems and suggesting includes or preload methods.

Scenario

A developer notices that their Rails application is running slowly when loading pages with associated records. Ruby on Rails Expert analyzes the code and identifies N+1 queries. It then provides a detailed explanation and examples on how to use `includes` to eager load associated records, reducing the number of database calls and improving page load times.

Example

Identifying and resolving common errors like 'undefined method for nil:NilClass' in a Rails application.

Scenario

A developer encounters a 'NoMethodError' in their application and struggles to find the root cause. Ruby on Rails Expert suggests checking for nil objects in the code path leading to the error, offers strategies for debugging such issues, and provides examples of how to use `byebug` or `pry` for breakpoint debugging to inspect variable values at runtime.

Example

Advising on the structuring of a Rails application for scalability and maintainability.

Scenario

A team plans to build a large-scale, feature-rich Rails application and seeks advice on structuring it. Ruby on Rails Expert recommends adopting a modular approach, separating concerns into different namespaces and utilizing service objects to handle complex business logic, thus keeping controllers thin and models focused on data persistence.