Class: Sift::Filtrator

Inherits:
Object
  • Object
show all
Defined in:
lib/sift/filtrator.rb

Overview

Filtrator takes a collection, params and a set of filters and applies them to create a new active record collection with those filters applied.

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(collection, params, _sort, filters = []) ⇒ Filtrator

Returns a new instance of Filtrator.



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# File 'lib/sift/filtrator.rb', line 12

def initialize(collection, params, _sort, filters = [])
  @collection = collection
  @params = params
  @filters = filters
  @sort = params.fetch(:sort, "").split(",") if filters.any? { |filter| filter.is_a?(Sort) }
end

Instance Attribute Details

#collection ⇒ Object (readonly)

Returns the value of attribute collection.



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# File 'lib/sift/filtrator.rb', line 6

def collection
  @collection
end

#filters ⇒ Object (readonly)

Returns the value of attribute filters.



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# File 'lib/sift/filtrator.rb', line 6

def filters
  @filters
end

#params ⇒ Object (readonly)

Returns the value of attribute params.



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# File 'lib/sift/filtrator.rb', line 6

def params
  @params
end

#sort ⇒ Object (readonly)

Returns the value of attribute sort.



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# File 'lib/sift/filtrator.rb', line 6

def sort
  @sort
end

Class Method Details

.filter(collection, params, filters, sort = []) ⇒ Object 



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# File 'lib/sift/filtrator.rb', line 8

def self.filter(collection, params, filters, sort = [])
  new(collection, params, sort, filters).filter
end

Instance Method Details

#filter ⇒ Object 



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# File 'lib/sift/filtrator.rb', line 19

def filter
  active_filters.reduce(collection) do |col, filter|
    apply(col, filter)
  end
end