Module: AssociateJsonb::Reflection

Defined in:
lib/associate_jsonb/reflection.rb

Instance Method Summary collapse

Instance Method Details

#foreign_store? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/associate_jsonb/reflection.rb', line 24

def foreign_store?
  options.key?(:foreign_store) && options[:foreign_store].present?
end

#foreign_store_attr ⇒ Object 



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# File 'lib/associate_jsonb/reflection.rb', line 34

def foreign_store_attr
  options[:foreign_store]
end

#foreign_store_key ⇒ Object 



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# File 'lib/associate_jsonb/reflection.rb', line 38

def foreign_store_key
  options[:foreign_store_key].presence || join_primary_key
end

#foreign_store_key?(fk = nil) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/associate_jsonb/reflection.rb', line 28

def foreign_store_key?(fk = nil)
  options.key?(:foreign_store_key) \
  && options[:foreign_store_key].present? \
  && (!fk || (foreign_store_key.to_s != fk.to_s))
end

#join_scope(table, foreign_table, foreign_klass) ⇒ Object 



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# File 'lib/associate_jsonb/reflection.rb', line 42

def join_scope(table, foreign_table, foreign_klass)
  return super unless jsonb_store? || foreign_store?

  predicate_builder = predicate_builder(table)
  scope_chain_items = join_scopes(table, predicate_builder)
  klass_scope       = klass_join_scope(table, predicate_builder)

  if type
    klass_scope.where!(type => foreign_klass.polymorphic_name)
  end

  scope_chain_items.inject(klass_scope, &:merge!)

  key         = join_primary_key
  foreign_key = join_foreign_key

  if foreign_store?
    klass_scope.where!(
      Arel::Nodes::NamedFunction.new(
        "CAST",
        [
          Arel::Nodes::Jsonb::DashDoubleArrow.
            new(table, table[foreign_store_attr], foreign_store_key || key).
            as(foreign_klass.columns_hash[foreign_key.to_s].sql_type)
        ]
      ).eq(
        ::Arel::Nodes::SqlLiteral.
          new("#{foreign_table.name}.#{foreign_key}")
      )
    )

    # klass_scope.where!(
    #   Arel::Nodes::Jsonb::DashDoubleArrow.
    #     new(table, table[foreign_store_attr], foreign_store_key || key).
    #     eq(
    #       ::Arel::Nodes::SqlLiteral.
    #         new("#{foreign_table.name}.#{foreign_key}::text")
    #     )
    # )
  elsif jsonb_store?
    klass_scope.where!(
      Arel::Nodes::NamedFunction.new(
        "CAST",
        [
          Arel::Nodes::Jsonb::DashDoubleArrow.
            new(foreign_table, foreign_table[jsonb_store_attr], jsonb_store_key || foreign_key).
            as(klass.columns_hash[key.to_s].sql_type)
        ]
      ).eq(
        ::Arel::Nodes::SqlLiteral.new("#{table.name}.#{key}")
      )
    )
  end

  if klass.finder_needs_type_condition?
    klass_scope.where!(klass.send(:type_condition, table))
  end

  klass_scope
end

#jsonb_store? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/associate_jsonb/reflection.rb', line 6

def jsonb_store?
  options.key?(:store) && jsonb_store_attr.present?
end

#jsonb_store_attr ⇒ Object 



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# File 'lib/associate_jsonb/reflection.rb', line 16

def jsonb_store_attr
  options[:store]
end

#jsonb_store_key ⇒ Object 



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# File 'lib/associate_jsonb/reflection.rb', line 20

def jsonb_store_key
  options[:store_key].presence || join_foreign_key
end

#jsonb_store_key?(fk = nil) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/associate_jsonb/reflection.rb', line 10

def jsonb_store_key?(fk = nil)
  options.key?(:store_key) \
  && options[:store_key].present? \
  && (!fk || (jsonb_store_key.to_s != fk.to_s))
end