Module: RbPager::ActiveRecord::ActiveRecordRelationMethods

Defined in:
lib/rb_pager/orm/active_record_relation_methods.rb

Instance Method Summary collapse

Instance Method Details

#left_over? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rb_pager/orm/active_record_relation_methods.rb', line 4

def left_over?
  @left_over ||= begin
    # Cache #size otherwise multiple calls to the database will occur.
    records.size.positive? && records.size < total_size
  end
end

#total_size(column_name = :all) ⇒ Object

Returns number of records that exist in scope of the current cursor



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# File 'lib/rb_pager/orm/active_record_relation_methods.rb', line 12

def total_size(column_name = :all) #:nodoc:
  # #count overrides the #select which could include generated columns
  # referenced in #order, so skip #order here, where it's irrelevant to the
  # result anyway.
  @total_size ||= begin
    context = except(:offset, :limit, :order)

    # Remove includes only if they are irrelevant
    context = context.except(:includes) unless references_eager_loaded_tables?

    args = [column_name]

    # .group returns an OrderedHash that responds to #count
    context = context.count(*args)

    if context.is_a?(Hash) || context.is_a?(ActiveSupport::OrderedHash)
      context.count
    else
      context.respond_to?(:count) ? context.count(*args) : context
    end
  end
end