haseebeqx

module ActiveRecord
  class Relation
    def pluck_in_batches(*columns, batch_size: 1000, start: nil)
      relation = self
      relation = relation.where(table[primary_key].gteq(start)) if start
      batch_order = "#{table.name}.#{primary_key} ASC"
      relation = relation.reorder(batch_order)

      loop do
        batch = relation.limit(batch_size).pluck(*columns, primary_key)

justinweiss

# Call scopes directly from your URL params:
#
#     @products = Product.filter(params.slice(:status, :location, :starts_with))
module Filterable
  extend ActiveSupport::Concern

  module ClassMethods
    
    # Call the class methods with names based on the keys in <tt>filtering_params</tt>
    # with their associated values. For example, "{ status: 'delayed' }" would call