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Versions: 8
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Stored size: 643 Bytes
Contents
module RC
module Numericality
OPERATORS = {
:greater_than => :>,
:greater_than_or_equal_to => :>=,
:equal_to => :"=",
:less_than => :<,
:less_than_or_equal_to => :<=
}.freeze
def add_numericality_constraint(table, attribute, options = {})
name = "#{table}_#{attribute}"
conditions = OPERATORS.slice(*options.keys).map do |key, operator|
value = options[key]
[attribute, operator, value].join(" ")
end.join(" AND ")
execute("ALTER TABLE #{table} ADD CONSTRAINT #{name} CHECK (#{conditions})")
end
end
end
Version data entries
8 entries across 8 versions & 1 rubygems