[FIXED] How do I include a has_many relation when doing a Rails entity query?

Issue

I'm using Rails 5. I have a model with a has_many relation ...

class Book

    has_many :references, :autosave => true, :dependent => :destroy

When querying for the entity,

book = Book.find(params[:id])

what do I need to add so that the has_many relation entities are also included?

Solution

You can use includes method for eager loading:

Book.includes(:references).find(params[:id])

Answered By - demir

Answer Checked By - Marie Seifert (PHPFixing Admin)