What is scope/named_scope in rails?

Question

I\'ve recently started an internship. My employer uses ruby on rails, and I frequently encounter new syntax that I need to look up to understand. I\'ve googled around for a

Answer 1

• Imagine you have a model: Person.

Now imagine you :

• want all the people in the world who have red hair.
• want all the people in the world who play cricket

You could get those particular classes of people by using a scope!

Person.red_hair.cricket ## finds all people with red hair who play cricket
Person.red_hair ## finds all people with red hair
Person.cricket ## finds all people who play cricket.

Now that wasn't so hard was it?