Logic duplication in scopes & predicates

Rails
1

Consider something like that in a model:

scope :recommended, -> { where(‘editors_selection OR rating > 9’) }

def recommended?
editors_selection? || rating > 9
end

How to DRY it up?

2

scope :recommended, -> { where(recommended_condition) }

def recommended?
eval(recommended_condition("||"))
end

def recommended_condition(selector = “OR”)
“editors_selection #{selector} rating > 9”
end

3

tiny update -

scope :recommended, → { where(self.recommended_condition) }

def recommended?
eval(self.class.recommended_condition(“||”))
end

def self.recommended_condition(selector == “OR”)
‘editors_selection #{selector} rating > 9’
end

On Tue, Sep 16, 2014 at 1:33 PM, Vivek S. [email protected]