How tagging with multiple values works? #701

app/models/dmsf_file.rb

@@ -500,7 +500,13 @@ class DmsfFile < ActiveRecord::Base
 
   def custom_value(custom_field)
     self.last_revision.custom_field_values.each do |cv|
-      return cv.value if cv.custom_field == custom_field
+      if cv.custom_field == custom_field
+        if cv.value.is_a? Array
+          return cv.value.reject{ |x| x.empty? }.join(',')
+        else
+          return cv.value
+        end
+      end
     end
     nil
   end

app/models/dmsf_file_revision_custom_field.rb

@@ -26,8 +26,16 @@ class DmsfFileRevisionCustomField < CustomField
   end
 
   def compare_values?(x, y)
-    if x.is_a?(Array) && y.is_a?(Array) && !y.empty?
-      x.include? y[0]
+    if x.is_a?(Array) && y.is_a?(Array)
+      y.reject!{ |a| a.empty? }
+      return true if y.empty?
+      x.reject!{ |a| a.empty? }
+      y.each do |b|
+        if x.include?(b)
+          return true
+        end
+      end
+      return false
     else
       x == y
     end

assets/stylesheets/redmine_dmsf.css

@@ -28,6 +28,11 @@
    margin-left: 5px;
 }
 
+#dmsf_tag .check_box_group {
+    background: inherit;
+    border: 0px;
+}
+
 .list .dmsf_modified {
 	min-width: 127px;
 	width: 127px;