Class: Git_sort_decorator

Inherits:
Filter_decorator show all
Defined in:
lib/models/filter/student_filters/git_sort_decorator.rb

Instance Method Summary collapse

Constructor Details

#initialize(filter, order) ⇒ Git_sort_decorator

Returns a new instance of Git_sort_decorator.



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# File 'lib/models/filter/student_filters/git_sort_decorator.rb', line 4

def initialize(filter, order)
  super(filter)
  self.order = order
end

Instance Method Details

#apply(filtering_obj) ⇒ Object 



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# File 'lib/models/filter/student_filters/git_sort_decorator.rb', line 9

def apply(filtering_obj)
  if filtering_obj.is_a?(Array)
    filtered_students = super(filtering_obj)
    if filtered_students.nil?
      return []
    end

    sorted_students = filtered_students.sort_by do |student|
      value = student.git
      String(value.nil? || value.empty? ? Float::INFINITY : value.downcase)
    end
    sorted_students.reverse! if self.order == :desc
    sorted_students
  else
    query = super(filtering_obj)
    "#{query} ORDER BY 
        CASE 
          WHEN git IS NULL OR git = '' THEN 1 
          ELSE 0 
        END, 
        git #{self.order == :asc ? 'ASC' : 'DESC' }"
  end
end