lib/redmine_publications/issue_patch.rb

   1 module RedminePublications
   2   # Patches Redmine's Issues dynamically. Adds a +after_save+ filter.
   3
   4   module IssuePatch
   5     def self.included(base) # :nodoc:
   6       base.extend(ClassMethods)
   7
   8       base.send(:include, InstanceMethods)
   9
  10       # Same as typing in the class
  11       base.class_eval do
  12         unloadable # Send unloadable so it will not be unloaded in development
  13
  14         validate :check_relations
  15         after_save :update_relations
  16       end
  17
  18     end
  19
  20     module ClassMethods
  21     end
  22
  23     module InstanceMethods
  24
  25       def publication_names
  26         if not @pubnames
  27           self.publications.map { |pub| pub.name }
  28         else
  29           @pubnames
  30         end
  31       end
  32
  33       def publication_names=(value)
  34         @pubnames = value.sort!
  35       end
  36
  37       def publications
  38         Publication.all(
  39           :joins =>
  40             "JOIN issue_publications ON (issue_publications.publication_id = publications.id)",
  41           :conditions =>
  42             ["issue_publications.issue_id = ? ", self.id] )
  43       end
  44
  45       def check_relations
  46         current_names = self.publication_names
  47         non_existant = []
  48
  49         pubs =  Publication.find_all_by_name(current_names).map {|i| i.name}
  50         missing = current_names.select {|name| not pubs.include?name }
  51
  52         if not missing.empty?
  53           errors.add("publications", "Missing publication(s): " + missing.join(', '))
  54         end
  55       end
  56
  57       def update_relations
  58         old = self.publications
  59         current_names = self.publication_names
  60         Rails.logger.info('[INFO] Updating relations: old= ' << old.inspect << ' current=' << current_names.inspect)
  61
  62         # delete unused relations
  63         deleted = old.select { |v| not (current_names.include?(v.name)) }
  64         deleted.each do |pub|
  65           IssuePublication.delete_all(["issue_publications.issue_id = ? AND issue_publications.publication_id = ?", self.id, pub.id])
  66         end
  67
  68         current_names.each do |name|
  69           pub = Publication.find_by_name(name)
  70           IssuePublication.find_or_create_by_publication_id_and_issue_id(pub.id, self.id)
  71         end
  72
  73         return true
  74       end
  75
  76     end
  77   end
  78 end