Class: Sequel::SQL::DateAdd

Classes and Modules

Module Sequel::SQL::DateAdd::DatasetMethods

Attributes

cast_type	[R]	The type to cast the expression to. nil if not overridden, in which cast the generic timestamp type for the database will be used.
expr	[R]	The expression that the interval is being added to.
interval	[R]	The interval added to the expression, as a hash with symbol keys.

Public Class methods

new(expr, interval, opts=OPTS)

Supports two types of intervals:

Hash :	Used directly, but values cannot be plain strings.
ActiveSupport::Duration :	Converted to a hash using the interval‘s parts.

[Source]

     # File lib/sequel/extensions/date_arithmetic.rb, line 187
187:       def initialize(expr, interval, opts=OPTS)
188:         @expr = expr
189:         @interval = if interval.is_a?(Hash)
190:           interval.each_value do |v|
191:              # Attempt to prevent SQL injection by users who pass untrusted strings
192:              # as interval values. 
193:              if v.is_a?(String) && !v.is_a?(LiteralString)
194:                raise Sequel::InvalidValue, "cannot provide String value as interval part: #{v.inspect}"
195:              end
196:           end
197:           Hash[interval]
198:         else
199:           h = Hash.new(0)
200:           interval.parts.each{|unit, value| h[unit] += value}
201:           Hash[h]
202:         end
203: 
204:         @interval.freeze
205:         @cast_type = opts[:cast] if opts[:cast]
206:         freeze
207:       end