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Contents
# encoding: utf-8
module Mongoid #:nodoc:
module Matchers #:nodoc:
# Contains all the default behavior for checking for matching documents
# given MongoDB expressions.
class Default
attr_accessor :attribute, :document
# Creating a new matcher only requires the value.
#
# @example Create a new matcher.
# Default.new("attribute")
#
# @param [ Object ] attribute The current attribute to check against.
#
# @since 1.0.0
def initialize(attribute, document = nil)
@attribute, @document = attribute, document
end
# Return true if the attribute and value are equal, or if it is an array
# if the value is included.
#
# @example Does this value match?
# default.matches?("value")
#
# @param [ Object ] value The value to check if it matches.
#
# @return [ true, false ] True if matches, false if not.
#
# @since 1.0.0
def matches?(value)
attribute.is_a?(Array) ? attribute.include?(value) : value === attribute
end
protected
# Convenience method for getting the first value in a hash.
#
# @example Get the first value.
# matcher.first(:test => "value")
#
# @param [ Hash ] hash The has to pull from.
#
# @return [ Object ] The first value.
#
# @since 1.0.0
def first(hash)
hash.values.first
end
# If object exists then compare the two, otherwise return false
#
# @example Determine if we can compare.
# matcher.determine("test", "$in")
#
# @param [ Object ] value The value to compare with.
# @param [ Symbol, String ] operator The comparison operation.
#
# @return [ true, false ] The comparison or false.
#
# @since 1.0.0
def determine(value, operator)
attribute ? attribute.send(operator, first(value)) : false
end
end
end
end
Version data entries
6 entries across 6 versions & 2 rubygems