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Contents
module Merit
# 5 stars is a common ranking use case. They are not given at specified
# actions like badges, you should define a cron job to test if ranks are to be
# granted.
#
# +set_rank+ accepts:
# * :+level+ ranking level (greater is better)
# * :+to+ model or scope to check if new rankings apply
# * :+level_name+ attribute name (default is empty and results in 'level'
# attribute, if set it's appended like 'level_#{level_name}')
module RankRulesMethods
# Populates +defined_rules+ hash with following hierarchy:
# defined_rules[ModelToRank] = { levels => blocks }
def set_rank(*args, &block)
options = args.extract_options!
rule = Rule.new
rule.block = block
rule.level_name = options[:level_name].present? ? "level_#{options[:level_name]}" : 'level'
defined_rules[options[:to]] ||= {}
defined_rules[options[:to]].merge!({ options[:level] => rule })
end
# Check rules defined for a merit_action
def check_rank_rules
defined_rules.each do |scoped_model, level_and_rules|
level_and_rules = level_and_rules.sort
level_and_rules.each do |level, rule|
begin
if Merit.orm == :mongoid
items = scoped_model.where(:"#{rule.level_name}".lt => level)
else
items = scoped_model.where("#{rule.level_name} < #{level}")
end
items.each do |obj|
if rule.applies?(obj)
obj.update_attribute rule.level_name, level
end
end
rescue ActiveRecord::StatementInvalid
Rails.logger.warn "[merit] Please add #{rule.level_name} column/attribute to #{scoped_model.new.class.name}"
end
end
end
end
# Currently defined rules
def defined_rules
@defined_rules ||= {}
end
end
end
Version data entries
13 entries across 13 versions & 1 rubygems