Better handling of issue update conflicts (#8691).

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@8774 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/controllers/issues_controller.rb

@@ -171,7 +171,7 @@ class IssuesController < ApplicationController
   end
 
   def edit
-    update_issue_from_params
+    return unless update_issue_from_params
 
     respond_to do |format|
       format.html { }
@@ -180,9 +180,23 @@ class IssuesController < ApplicationController
   end
 
   def update
-    update_issue_from_params
+    return unless update_issue_from_params
+    saved = false
+    begin
+      saved = @issue.save_issue_with_child_records(params, @time_entry)
+    rescue ActiveRecord::StaleObjectError
+      @conflict = true
+      if params[:last_journal_id]
+        if params[:last_journal_id].present?
+          last_journal_id = params[:last_journal_id].to_i
+          @conflict_journals = @issue.journals.all(:conditions => ["#{Journal.table_name}.id > ?", last_journal_id])
+        else
+          @conflict_journals = @issue.journals.all
+        end
+      end
+    end
 
-    if @issue.save_issue_with_child_records(params, @time_entry)
+    if saved
       render_attachment_warning_if_needed(@issue)
       flash[:notice] = l(:notice_successful_update) unless @issue.current_journal.new_record?
 
@@ -345,7 +359,22 @@ private
 
     @notes = params[:notes] || (params[:issue].present? ? params[:issue][:notes] : nil)
     @issue.init_journal(User.current, @notes)
-    @issue.safe_attributes = params[:issue]
+
+    issue_attributes = params[:issue]
+    if issue_attributes && params[:conflict_resolution]
+      case params[:conflict_resolution]
+      when 'overwrite'
+        issue_attributes = issue_attributes.dup
+        issue_attributes.delete(:lock_version)
+      when 'add_notes'
+        issue_attributes = {}
+      when 'cancel'
+        redirect_to issue_path(@issue)
+        return false
+      end
+    end
+    @issue.safe_attributes = issue_attributes
+    true
   end
 
   # TODO: Refactor, lots of extra code in here