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Contents
module CandyCheck
module Utils
# Very basic base implementation to store and validate a configuration
class Config
# Initializes a new configuration from a hash
# @param attributes [Hash]
def initialize(attributes)
if attributes.is_a?(Hash)
attributes.each do |k, v|
instance_variable_set "@#{k}", v
end
end
validate!
end
protected
# Hook to check for validation error in the sub classes
# should raise an error if not passed
def validate!
# pass
end
# Check for the presence of an attribute
# @param name [String]
# @raise [ArgumentError] if attribute is missing
def validates_presence(name)
return if send(name)
raise ArgumentError, "Configuration field #{name} is missing"
end
# Checks for the inclusion of an attribute
# @param name [String]
# @param values [Array] of possible values
def validates_inclusion(name, *values)
return if values.include?(send(name))
raise ArgumentError, "Configuration field #{name} should be "\
"one of: #{values.join(', ')}"
end
end
end
end
Version data entries
7 entries across 7 versions & 1 rubygems