module ActiveRecord::ConnectionAdapters::PostgreSQL::Quoting
Public Instance Methods
escape_bytea(value)
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Escapes binary strings for bytea input to the database.
# File lib/active_record/connection_adapters/postgresql/quoting.rb, line 8 def escape_bytea(value) @connection.escape_bytea(value) if value end
quote_schema_name(name)
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Quotes schema names for use in SQL queries.
# File lib/active_record/connection_adapters/postgresql/quoting.rb, line 37 def quote_schema_name(name) PG::Connection.quote_ident(name) end
quote_table_name_for_assignment(table, attr)
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# File lib/active_record/connection_adapters/postgresql/quoting.rb, line 41 def quote_table_name_for_assignment(table, attr) quote_column_name(attr) end
unescape_bytea(value)
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Unescapes bytea output from a database to the binary string it represents. NOTE: This is NOT an inverse of escape_bytea
! This is only to be used on escaped binary output from database drive.
# File lib/active_record/connection_adapters/postgresql/quoting.rb, line 15 def unescape_bytea(value) @connection.unescape_bytea(value) if value end
Private Instance Methods
_quote(value)
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Calls superclass method
# File lib/active_record/connection_adapters/postgresql/quoting.rb, line 86 def _quote(value) case value when OID::Xml::Data "xml '#{quote_string(value.to_s)}'" when OID::Bit::Data if value.binary? "B'#{value}'" elsif value.hex? "X'#{value}'" end when Float if value.infinite? || value.nan? "'#{value}'" else super end when OID::Array::Data _quote(encode_array(value)) when Range _quote(encode_range(value)) else super end end
_type_cast(value)
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Calls superclass method
# File lib/active_record/connection_adapters/postgresql/quoting.rb, line 111 def _type_cast(value) case value when Type::Binary::Data # Return a bind param hash with format as binary. # See https://deveiate.org/code/pg/PG/Connection.html#method-i-exec_prepared-doc # for more information { value: value.to_s, format: 1 } when OID::Xml::Data, OID::Bit::Data value.to_s when OID::Array::Data encode_array(value) when Range encode_range(value) else super end end
determine_encoding_of_strings_in_array(value)
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# File lib/active_record/connection_adapters/postgresql/quoting.rb, line 144 def determine_encoding_of_strings_in_array(value) case value when ::Array then determine_encoding_of_strings_in_array(value.first) when ::String then value.encoding end end
encode_array(array_data)
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# File lib/active_record/connection_adapters/postgresql/quoting.rb, line 129 def encode_array(array_data) encoder = array_data.encoder values = type_cast_array(array_data.values) result = encoder.encode(values) if encoding = determine_encoding_of_strings_in_array(values) result.force_encoding(encoding) end result end
encode_range(range)
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# File lib/active_record/connection_adapters/postgresql/quoting.rb, line 140 def encode_range(range) "[#{type_cast_range_value(range.first)},#{type_cast_range_value(range.last)}#{range.exclude_end? ? ')' : ']'}" end
infinity?(value)
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# File lib/active_record/connection_adapters/postgresql/quoting.rb, line 162 def infinity?(value) value.respond_to?(:infinite?) && value.infinite? end
lookup_cast_type(sql_type)
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Calls superclass method
# File lib/active_record/connection_adapters/postgresql/quoting.rb, line 82 def lookup_cast_type(sql_type) super(query_value("SELECT #{quote(sql_type)}::regtype::oid", "SCHEMA").to_i) end
type_cast_array(values)
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# File lib/active_record/connection_adapters/postgresql/quoting.rb, line 151 def type_cast_array(values) case values when ::Array then values.map { |item| type_cast_array(item) } else _type_cast(values) end end
type_cast_range_value(value)
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# File lib/active_record/connection_adapters/postgresql/quoting.rb, line 158 def type_cast_range_value(value) infinity?(value) ? "" : type_cast(value) end