apps/workbench/app/models/collection.rb

   1 class Collection < ArvadosBase
   2   MD5_EMPTY = 'd41d8cd98f00b204e9800998ecf8427e'
   3
   4   def default_name
   5     if Collection.is_empty_blob_locator? self.uuid
   6       "Empty Collection"
   7     else
   8       super
   9     end
  10   end
  11
  12   # Return true if the given string is the locator of a zero-length blob
  13   def self.is_empty_blob_locator? locator
  14     !!locator.to_s.match("^#{MD5_EMPTY}(\\+.*)?\$")
  15   end
  16
  17   def self.goes_in_projects?
  18     true
  19   end
  20
  21   def content_summary
  22     ApplicationController.helpers.human_readable_bytes_html(total_bytes) + " " + super
  23   end
  24
  25   def total_bytes
  26     if files
  27       tot = 0
  28       files.each do |file|
  29         tot += file[2]
  30       end
  31       tot
  32     else
  33       0
  34     end
  35   end
  36
  37   def files_tree
  38     return [] if files.empty?
  39     tree = files.group_by { |file_spec| File.split(file_spec.first) }
  40     # Fill in entries for empty directories.
  41     tree.keys.map { |basedir, _| File.split(basedir) }.each do |splitdir|
  42       until tree.include?(splitdir)
  43         tree[splitdir] = []
  44         splitdir = File.split(splitdir.first)
  45       end
  46     end
  47     dir_to_tree = lambda do |dirname|
  48       # First list subdirectories, with their files inside.
  49       subnodes = tree.keys.select { |bd, td| (bd == dirname) and (td != '.') }
  50         .sort.flat_map do |parts|
  51         [parts + [nil]] + dir_to_tree.call(File.join(parts))
  52       end
  53       # Then extend that list with files in this directory.
  54       subnodes + tree[File.split(dirname)]
  55     end
  56     dir_to_tree.call('.')
  57   end
  58
  59   def attribute_editable? attr, *args
  60     if %w(name description manifest_text).include? attr.to_s
  61       true
  62     else
  63       super
  64     end
  65   end
  66
  67   def self.creatable?
  68     false
  69   end
  70
  71   def provenance
  72     arvados_api_client.api "collections/#{self.uuid}/", "provenance"
  73   end
  74
  75   def used_by
  76     arvados_api_client.api "collections/#{self.uuid}/", "used_by"
  77   end
  78
  79   def uuid
  80     if self[:uuid].nil?
  81       return self[:portable_data_hash]
  82     else
  83       super
  84     end
  85   end
  86
  87   def portable_data_hash
  88     if self[:portable_data_hash].nil?
  89       return self[:uuid]
  90     else
  91       super
  92     end
  93   end
  94
  95   def friendly_link_name
  96     if self.respond_to? :name
  97       self.name
  98     else
  99       self.portable_data_hash
 100     end
 101   end
 102
 103 end