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85 lines
2.5 KiB
85 lines
2.5 KiB
module Backlogs
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module List
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unloadable
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def self.included(base)
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base.send(:include, InstanceMethods)
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base.send(:extend, ClassMethods)
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end
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module ClassMethods
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def acts_as_backlogs_list(tracker_method)
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scope_string = 'project_id = #{self.project_id}' +
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' AND fixed_version_id = #{self.fixed_version_id}' +
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' AND tracker_id in (#{self.class.trackers_in_scope})'
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trackers_method = "def self.trackers_method() \"#{tracker_method}\" end"
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class_eval <<-EOV
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acts_as_list :scope => scope_string
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#{ trackers_method }
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EOV
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end
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def trackers_in_scope
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trackers = self.send(self.trackers_method().to_sym)
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if trackers.is_a?(Array)
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trackers.join(', ')
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else
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trackers
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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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def move_after(prev_id)
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# remove so the potential 'prev' has a correct position
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remove_from_list
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reload
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begin
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prev = self.class.find(prev_id)
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rescue ActiveRecord::RecordNotFound
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prev = nil
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end
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# if it's the first story, move it to the 1st position
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if prev.blank?
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insert_at
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move_to_top
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# if its predecessor has no position, create an order on position silently.
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# This can happen when sorting inside a version for the first time after backlogs was activated
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# and there have already been items inside the version at the time of backlogs activation
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elsif !prev.in_list?
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prev_pos = set_default_prev_positions_silently(prev)
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insert_at(prev_pos += 1)
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# there's a valid predecessor
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else
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insert_at(prev.position + 1)
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end
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end
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private
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def set_default_prev_positions_silently(prev)
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stories = self.class.find(:all, :conditions => {:fixed_version_id => self.fixed_version_id, :tracker_id => self.class.trackers_in_scope})
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self.class.record_timestamps = false #temporarily turn off column updates
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highest_pos = stories.sort_by{|s| s.position ? s.position : 0}.collect(&:position).last
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highest_pos = 0 if highest_pos.nil?
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stories.sort_by { |s| s.id }.each do |story|
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next if story.in_list? || story.id > prev.id || self.id == story.id
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story.insert_at(highest_pos += 1)
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end
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self.class.record_timestamps = true #turning updates back on
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highest_pos
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end
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end
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end
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end
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