Methods

Instance Public methods

sanitize_sql(condition)

Alias for: sanitize_sql_for_conditions

sanitize_sql_array(ary)

Accepts an array of conditions. The array has each value sanitized and interpolated into the SQL statement.

sanitize_sql_array(["name=? and group_id=?", "foo'bar", 4])
# => "name='foo''bar' and group_id=4"

sanitize_sql_array(["name=:name and group_id=:group_id", name: "foo'bar", group_id: 4])
# => "name='foo''bar' and group_id=4"

sanitize_sql_array(["name='%s' and group_id='%s'", "foo'bar", 4])
# => "name='foo''bar' and group_id='4'"
📝 Source code 
# File activerecord/lib/active_record/sanitization.rb, line 124
      def sanitize_sql_array(ary)
        statement, *values = ary
        if values.first.is_a?(Hash) && /:\w+/.match?(statement)
          replace_named_bind_variables(statement, values.first)
        elsif statement.include?("?")
          replace_bind_variables(statement, values)
        elsif statement.blank?
          statement
        else
          statement % values.collect { |value| connection.quote_string(value.to_s) }
        end
      end
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sanitize_sql_for_assignment(assignments, default_table_name = table_name)

Accepts an array, hash, or string of SQL conditions and sanitizes them into a valid SQL fragment for a SET clause.

sanitize_sql_for_assignment(["name=? and group_id=?", nil, 4])
# => "name=NULL and group_id=4"

sanitize_sql_for_assignment(["name=:name and group_id=:group_id", name: nil, group_id: 4])
# => "name=NULL and group_id=4"

Post.sanitize_sql_for_assignment({ name: nil, group_id: 4 })
# => "`posts`.`name` = NULL, `posts`.`group_id` = 4"

sanitize_sql_for_assignment("name=NULL and group_id='4'")
# => "name=NULL and group_id='4'"
📝 Source code 
# File activerecord/lib/active_record/sanitization.rb, line 46
      def sanitize_sql_for_assignment(assignments, default_table_name = table_name)
        case assignments
        when Array; sanitize_sql_array(assignments)
        when Hash;  sanitize_sql_hash_for_assignment(assignments, default_table_name)
        else        assignments
        end
      end
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sanitize_sql_for_conditions(condition)

Accepts an array or string of SQL conditions and sanitizes them into a valid SQL fragment for a WHERE clause.

sanitize_sql_for_conditions(["name=? and group_id=?", "foo'bar", 4])
# => "name='foo''bar' and group_id=4"

sanitize_sql_for_conditions(["name=:name and group_id=:group_id", name: "foo'bar", group_id: 4])
# => "name='foo''bar' and group_id='4'"

sanitize_sql_for_conditions(["name='%s' and group_id='%s'", "foo'bar", 4])
# => "name='foo''bar' and group_id='4'"

sanitize_sql_for_conditions("name='foo''bar' and group_id='4'")
# => "name='foo''bar' and group_id='4'"
Also aliased as: sanitize_sql
📝 Source code 
# File activerecord/lib/active_record/sanitization.rb, line 22
      def sanitize_sql_for_conditions(condition)
        return nil if condition.blank?

        case condition
        when Array; sanitize_sql_array(condition)
        else        condition
        end
      end
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sanitize_sql_for_order(condition)

Accepts an array, or string of SQL conditions and sanitizes them into a valid SQL fragment for an ORDER clause.

sanitize_sql_for_order(["field(id, ?)", [1,3,2]])
# => "field(id, 1,3,2)"

sanitize_sql_for_order("id ASC")
# => "id ASC"
📝 Source code 
# File activerecord/lib/active_record/sanitization.rb, line 62
      def sanitize_sql_for_order(condition)
        if condition.is_a?(Array) && condition.first.to_s.include?("?")
          disallow_raw_sql!(
            [condition.first],
            permit: connection.column_name_with_order_matcher
          )

          # Ensure we aren't dealing with a subclass of String that might
          # override methods we use (e.g. Arel::Nodes::SqlLiteral).
          if condition.first.kind_of?(String) && !condition.first.instance_of?(String)
            condition = [String.new(condition.first), *condition[1..-1]]
          end

          Arel.sql(sanitize_sql_array(condition))
        else
          condition
        end
      end
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sanitize_sql_hash_for_assignment(attrs, table)

Sanitizes a hash of attribute/value pairs into SQL conditions for a SET clause.

sanitize_sql_hash_for_assignment({ status: nil, group_id: 1 }, "posts")
# => "`posts`.`status` = NULL, `posts`.`group_id` = 1"
📝 Source code 
# File activerecord/lib/active_record/sanitization.rb, line 85
      def sanitize_sql_hash_for_assignment(attrs, table)
        c = connection
        attrs.map do |attr, value|
          type = type_for_attribute(attr)
          value = type.serialize(type.cast(value))
          "#{c.quote_table_name_for_assignment(table, attr)} = #{c.quote(value)}"
        end.join(", ")
      end
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sanitize_sql_like(string, escape_character = "\\")

Sanitizes a string so that it is safe to use within an SQL LIKE statement. This method uses escape_character to escape all occurrences of “", ”_“ and ”%“.

sanitize_sql_like("100%")
# => "100\\%"

sanitize_sql_like("snake_cased_string")
# => "snake\\_cased\\_string"

sanitize_sql_like("100%", "!")
# => "100!%"

sanitize_sql_like("snake_cased_string", "!")
# => "snake!_cased!_string"
📝 Source code 
# File activerecord/lib/active_record/sanitization.rb, line 108
      def sanitize_sql_like(string, escape_character = "\\")
        pattern = Regexp.union(escape_character, "%", "_")
        string.gsub(pattern) { |x| [escape_character, x].join }
      end
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