Index: app/models/issue_query.rb
===================================================================
--- app/models/issue_query.rb	(revision 19478)
+++ app/models/issue_query.rb	(working copy)
@@ -559,7 +559,7 @@
         "1=0"
       end
     when "~"
-      root_id, lft, rgt = Issue.where(:id => value.first.to_i).pluck(:root_id, :lft, :rgt).first
+      root_id, lft, rgt = Issue.where(:id => value.first.to_i).pick(:root_id, :lft, :rgt)
       if root_id && lft && rgt
         "#{Issue.table_name}.root_id = #{root_id} AND #{Issue.table_name}.lft > #{lft} AND #{Issue.table_name}.rgt < #{rgt}"
       else
@@ -584,7 +584,7 @@
         "1=0"
       end
     when "~"
-      root_id, lft, rgt = Issue.where(:id => value.first.to_i).pluck(:root_id, :lft, :rgt).first
+      root_id, lft, rgt = Issue.where(:id => value.first.to_i).pick(:root_id, :lft, :rgt)
       if root_id && lft && rgt
         "#{Issue.table_name}.root_id = #{root_id} AND #{Issue.table_name}.lft < #{lft} AND #{Issue.table_name}.rgt > #{rgt}"
       else
Index: app/models/user.rb
===================================================================
--- app/models/user.rb	(revision 19478)
+++ app/models/user.rb	(working copy)
@@ -635,7 +635,7 @@
       return @project_ids_by_role if @project_ids_by_role
 
       group_class = anonymous? ? GroupAnonymous : GroupNonMember
-      group_id = group_class.pluck(:id).first
+      group_id = group_class.pick(:id)
 
       members = Member.joins(:project, :member_roles).
         where("#{Project.table_name}.status <> 9").
Index: lib/redmine/nested_set/issue_nested_set.rb
===================================================================
--- lib/redmine/nested_set/issue_nested_set.rb	(revision 19478)
+++ lib/redmine/nested_set/issue_nested_set.rb	(working copy)
@@ -139,7 +139,7 @@
       end
 
       def reload_nested_set_values
-        self.root_id, self.lft, self.rgt = self.class.where(:id => id).pluck(:root_id, :lft, :rgt).first
+        self.root_id, self.lft, self.rgt = self.class.where(:id => id).pick(:root_id, :lft, :rgt)
       end
 
       def save_nested_set_values
Index: lib/redmine/nested_set/project_nested_set.rb
===================================================================
--- lib/redmine/nested_set/project_nested_set.rb	(revision 19478)
+++ lib/redmine/nested_set/project_nested_set.rb	(working copy)
@@ -39,7 +39,7 @@
         if siblings_rgt
           siblings_rgt + 1
         elsif parent_id
-          parent_lft = self.class.where(:id => parent_id).pluck(:lft).first
+          parent_lft = self.class.where(:id => parent_id).pick(:lft)
           raise "Project id=#{id} with parent_id=#{parent_id}: parent missing or without 'lft' value" unless parent_lft
           parent_lft + 1
         else
@@ -108,7 +108,7 @@
       end
 
       def reload_nested_set_values
-        self.lft, self.rgt = Project.where(:id => id).pluck(:lft, :rgt).first
+        self.lft, self.rgt = Project.where(:id => id).pick(:lft, :rgt)
       end
 
       def save_nested_set_values