pentabarf import: importing events and more

README.pentabarf.md

 # frab - pentabarf import
 
+These notes may help to import data from a pentabarf postgresql database.
+
+Using postgresql as a database for frab is still somewhat untested. The pentabarf 
+import is however likely to fail, as pentabarf uses text fields instead of char(255)
+
 ## postgresql installation
 
 install postgresql
 
 ## postgresql setup
 
-make it listen on localhost
-create a psql user and grant some access on relations
-add a pentabarf entry for the postgresql database to your environment
+* Make it listen on localhost
+* create a psql user and grant some access on relations
+* add a pentabarf entry for the postgresql database to your rails db environment
 
 ## postgresql copy
+
 Make a copy of your postgresql database, as we need to do some changes
 
     pg_dump -Fc DBNAME > backup.dump
@@ -19,12 +25,28 @@ Make a copy of your postgresql database, as we need to do some changes
 
 ## postgresql permissions
 
+Grant all permissions on the database copy to the import user account:
+
     psql cccv
     select 'grant all on '||schemaname||'.'||tablename||' to bar;' from pg_tables  
       order by schemaname, tablename;
 
 ## data migration
 
+I had to delete some images, too.
+
     -- conference acronyms appear in URLs, they may not contain whitespace in frab:
     UPDATE conference SET acronym = replace(acronym, ' ', '');
     UPDATE conference SET acronym = 'mrmcdX' where conference_id=86; -- mrmcdⅩ
+
+## import 
+
+
+Delete any old mappings from previous imports. Maybe delete the old filess, too.
+
+    rm tmp/*mappings.yml
+    rm -fr public/system
+    RAILS_ENV=production rake db:reset
+    RAILS_ENV=production rake pentabarf:import:all
+
+

app/models/event.rb

@@ -164,7 +164,7 @@ class Event < ActiveRecord::Base
           Conflict.create(:event => conflicting_event, :conflicting_event => self, :conflict_type => "events_overlap", :severity => "fatal")
         end
       end
-      self.event_people.group(:person_id).each do |event_person|
+      self.event_people.group(:person_id,:id).each do |event_person|
         unless event_person.available_between?(self.start_time, self.end_time)
           Conflict.create(:event => self, :person => event_person.person, :conflict_type => "person_unavailable", :severity => "warning")
         end