Eric Davis
67 lines
1.5 KiB
Ruby
67 lines
1.5 KiB
Ruby
module RateTimeEntryPatch
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def self.included(base) # :nodoc:
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base.extend(ClassMethods)
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base.send(:include, InstanceMethods)
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# Same as typing in the class
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base.class_eval do
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unloadable # Send unloadable so it will not be unloaded in development
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belongs_to :rate
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before_save :cost
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end
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end
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module ClassMethods
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# Updated the cached cost of all TimeEntries for user and project
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def update_cost_cache(user, project=nil)
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c = ARCondition.new
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c << ["#{TimeEntry.table_name}.user_id = ?", user]
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c << ["#{TimeEntry.table_name}.project_id = ?", project] if project
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TimeEntry.all(:conditions => c.conditions).each do |time_entry|
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time_entry.save_cached_cost
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end
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end
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end
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module InstanceMethods
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# Returns the current cost of the TimeEntry based on it's rate and hours
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#
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# Is a read-through cache method
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def cost
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unless read_attribute(:cost)
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if self.rate.nil?
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amount = Rate.amount_for(self.user, self.project, self.spent_on.to_s)
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else
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amount = rate.amount
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end
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if amount.nil?
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write_attribute(:cost, 0.0)
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else
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# Write the cost to the database for caching
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update_attribute(:cost, amount.to_f * hours.to_f)
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end
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end
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read_attribute(:cost)
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end
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def clear_cost_cache
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write_attribute(:cost, nil)
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end
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def save_cached_cost
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clear_cost_cache
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update_attribute(:cost, cost)
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end
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end
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end
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