Sha256: 79289416ed1db53a7b86a901348c1c0e09aa250db25a828481ad67678e9c4081
Contents?: true
Size: 720 Bytes
Versions: 9
Compression:
Stored size: 720 Bytes
Contents
class Module
# Like attr_writer, but the writer method validates the
# setting against the given block.
#
# CREDIT: ?
def attr_validator(*symbols, &validator)
made = []
symbols.each do |symbol|
define_method "#{symbol}=" do |val|
unless validator.call(val)
raise ArgumentError, "Invalid value provided for #{symbol}"
end
instance_variable_set("@#{symbol}", val)
end
made << "#{symbol}=".to_sym
end
made
end
# Create aliases for validators.
def alias_validator(*args)
orig = args.last
args = args - [orig]
args.each do |name|
#alias_method(name, orig)
alias_method("#{name}=", "#{orig}=")
end
end
end
Version data entries
9 entries across 9 versions & 1 rubygems