# File activerecord/lib/active_record/connection_adapters/abstract/quoting.rb, line 11 def quote(value) case value when String, Symbol, ActiveSupport::Multibyte::Chars "'#{quote_string(value.to_s)}'" when true then quoted_true when false then quoted_false when nil then "NULL" # BigDecimals need to be put in a non-normalized form and quoted. when BigDecimal then value.to_s("F") when Numeric, ActiveSupport::Duration then value.to_s when Type::Binary::Data then quoted_binary(value) when Type::Time::Value then "'#{quoted_time(value)}'" when Date, Time then "'#{quoted_date(value)}'" when Class then "'#{value}'" else raise TypeError, "can't quote #{value.class.name}" end end
Quotes the column value to help prevent SQL injection attacks.
# File activerecord/lib/active_record/connection_adapters/abstract/quoting.rb, line 50 def quote_bound_value(value) quote(value) end
Quote a value to be used as a bound parameter of unknown type. For example, MySQL
might perform dangerous castings when comparing a string to a number, so this method will cast numbers to string.
# File activerecord/lib/active_record/connection_adapters/abstract/quoting.rb, line 74 def quote_column_name(column_name) column_name.to_s end
Quotes the column name. Defaults to no quoting.
# File activerecord/lib/active_record/connection_adapters/abstract/quoting.rb, line 69 def quote_string(s) s.gsub("\\", '\&\&').gsub("'", "''") # ' (for ruby-mode) end
Quotes a string, escaping any ' (single quote) and \ (backslash) characters.
# File activerecord/lib/active_record/connection_adapters/abstract/quoting.rb, line 79 def quote_table_name(table_name) quote_column_name(table_name) end
Quotes the table name. Defaults to column name quoting.
# File activerecord/lib/active_record/connection_adapters/abstract/quoting.rb, line 91 def quote_table_name_for_assignment(table, attr) quote_table_name("#{table}.#{attr}") end
Override to return the quoted table name for assignment. Defaults to table quoting.
This works for mysql2 where table.column can be used to resolve ambiguity.
We override this in the sqlite3 and postgresql adapters to use only the column name (as per syntax requirements).
# File activerecord/lib/active_record/connection_adapters/abstract/quoting.rb, line 122 def quoted_date(value) if value.acts_like?(:time) if ActiveRecord.default_timezone == :utc value = value.getutc if !value.utc? else value = value.getlocal end end result = value.to_formatted_s(:db) if value.respond_to?(:usec) && value.usec > 0 result << "." << sprintf("%06d", value.usec) else result end end
Quote date/time values for use in SQL input. Includes microseconds if the value is a Time
responding to usec.
# File activerecord/lib/active_record/connection_adapters/abstract/quoting.rb, line 112 def quoted_false "FALSE" end
# File activerecord/lib/active_record/connection_adapters/abstract/quoting.rb, line 104 def quoted_true "TRUE" end
# File activerecord/lib/active_record/connection_adapters/abstract/quoting.rb, line 32 def type_cast(value) case value when Symbol, ActiveSupport::Multibyte::Chars, Type::Binary::Data value.to_s when true then unquoted_true when false then unquoted_false # BigDecimals need to be put in a non-normalized form and quoted. when BigDecimal then value.to_s("F") when nil, Numeric, String then value when Type::Time::Value then quoted_time(value) when Date, Time then quoted_date(value) else raise TypeError, "can't cast #{value.class.name}" end end
Cast a value
to a type that the database understands. For example, SQLite does not understand dates, so this method will convert a Date
to a String
.
# File activerecord/lib/active_record/connection_adapters/abstract/quoting.rb, line 116 def unquoted_false false end
# File activerecord/lib/active_record/connection_adapters/abstract/quoting.rb, line 108 def unquoted_true true end
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