Module: Pagy::Keyset::Adapters::ActiveRecord

Defined in:
lib/pagy/classes/keyset/adapters/active_record.rb

Overview

Keyset adapter for ActiveRecord

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.included(including) ⇒ Object 



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# File 'lib/pagy/classes/keyset/adapters/active_record.rb', line 42

def self.included(including)
  instance_methods(false).each do |method_name|
    including.send(:protected, method_name)
  end
end

Instance Method Details

#apply_where(predicate, arguments) ⇒ Object 



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# File 'lib/pagy/classes/keyset/adapters/active_record.rb', line 38

def apply_where(predicate, arguments)
  @set = @set.where(predicate, **arguments)
end

#ensure_select ⇒ Object 



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# File 'lib/pagy/classes/keyset/adapters/active_record.rb', line 32

def ensure_select
  return if @set.select_values.empty?

  @set = @set.select(*@keyset.keys)
end

#extract_keyset ⇒ Object 



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# File 'lib/pagy/classes/keyset/adapters/active_record.rb', line 8

def extract_keyset
  @set.order_values.each_with_object({}) do |node, keyset|
    keyset[node.value.name.to_sym] ||= node.direction
  end
end

#keyset_attributes_from(record) ⇒ Object 



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# File 'lib/pagy/classes/keyset/adapters/active_record.rb', line 14

def keyset_attributes_from(record)
  record.slice(*@keyset.keys)
end

#quoted_identifiers(table) ⇒ Object 



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# File 'lib/pagy/classes/keyset/adapters/active_record.rb', line 18

def quoted_identifiers(table)
  connection = @set.connection
  @keyset.to_h { |column| [column, "#{connection.quote_table_name(table)}.#{connection.quote_column_name(column)}"] }
end

#typecast(attributes) ⇒ Object 



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# File 'lib/pagy/classes/keyset/adapters/active_record.rb', line 23

def typecast(attributes)
  model = @set.model
  {}.tap do |result|
    @keyset.each_key do |k|
      result[k] = model.type_for_attribute(k).cast(attributes[k])
    end
  end
end