ruby on rails - Sorting objects based on condition - 


 @products =  [#<product id: 15, name: "abcd", revision: 100>,               #<product id: 19, name: "test", revision: 1080>,               #<product id: 5, name: "abcd", revision: 109>,               #<product id: 450, name: "test", revision: 9>,               #<product id: 2, name: "example", revision: 150>]

question: want output products condition if name duplicated more once, want output product has latest revision.

expected output: 

@products =  [#<product id: 19, name: "test", revision: 1080>,               #<product id: 5, name: "abcd", revision: 109>,               #<product id: 2, name: "example", revision: 150>]

as there 2 products named "abcd" should display 1 latest revision , same applied "test", there no duplicates "example" rendered normally.

any appreciated, have been stuck on this.

this should trick:

temp_array = @products.group_by(&:name)  @filtered_products = temp_array.map |name, products|   products.sort{ |p1, p2| p2.revision <=> p1.revision }.first end

don't hesitate ask details if need ;)


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