Module: ParamsReady::Pagination::Direction::Before

Extended by:
ParamsReady::Pagination::Direction
Defined in:
lib/params_ready/pagination/direction.rb

Class Method Summary collapse

Methods included from ParamsReady::Pagination::Direction

build_cursor, check_primary_keys_presence, cursor_predicate, cursor_predicates, instance, non_nullable_predicate, nullable_predicate, pk_predicate

Class Method Details

.invert_ordering? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/params_ready/pagination/direction.rb', line 90

def self.invert_ordering?
  true
end

.keysets(_, keysets, &block) ⇒ Object 



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# File 'lib/params_ready/pagination/direction.rb', line 112

def self.keysets(_, keysets, &block)
  BeforeKeysets.new(keysets, &block)
end

.nulls_strategy(strategy) ⇒ Object 



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# File 'lib/params_ready/pagination/direction.rb', line 103

def self.nulls_strategy(strategy)
  case strategy
  when :first then Nulls::Last
  when :last then Nulls::First
  else
    raise ParamsReadyError, "Unexpected nulls strategy: '#{strategy}'"
  end
end

.tendency(ordering) ⇒ Object 



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# File 'lib/params_ready/pagination/direction.rb', line 94

def self.tendency(ordering)
  case ordering
  when :desc then Tendency::Growing
  when :asc then Tendency::Falling
  else
    raise ParamsReadyError, "Unexpected ordering: '#{ordering}'"
  end
end