How to check if a model is present in an Array in Ruby-CodePudding

I have an array, and the elements inside are a mix of 2 models: Article and Profile.

Is there a way to check if there is an Article and/or Profile model inside the array? The functions I saw like include? work for the specific elements and not their class.

Example: Given [Profile1, Profile2, Article1] I wanted to check if there is an Article or Profile in there. I can only check if there is an element named Profile1.

Any help would be much appreciated! Thank you!

CodePudding user response：

You can use the method any? with the method is_a?

Here is a way to know if there is an Article or a Profile in the array.

array = [Profile1, Profile2, Article1]
array.any? { |a| a.is_a?(Article) || a.is_a?(Profile) }

CodePudding user response：

You can even use instance_of?

array = [Profile1, Profile2, Article1]
array.any?{ |v| v.instance_of?(Profile) || v.instance_of?(Article) }

If you want count every models, you can do like this:

For Article

array = [Profile1, Profile2, Article1]
array.map{ |v| v.instance_of?(Article) }.count(true)

For Profile

array.map{ |v| v.instance_of?(Profile) }.count(true)