Thank you guys, you helped us a lot! Great to have you around :). Piotr
W dniu środa, 20 kwietnia 2016 20:04:59 UTC+2 użytkownik Stewart Mckinney napisał: > > Piotr, have a look at > http://api.rubyonrails.org/classes/ActiveRecord/Associations/ClassMethods.html > > There are a ton of things that are auto-created by associations - one is a > setter method that reflects the id's of the association. > #collection_check_boxes basically formats your input to match that setter. > In this case it would be "category_ids". > > On Wed, Apr 20, 2016 at 1:54 PM, Frederick Cheung <[email protected] > <javascript:>> wrote: > >> On Wednesday, April 20, 2016 at 2:26:20 PM UTC+1, Piotr Brych wrote: >> > OK, thanks for that, it might help. >> > >> > >> > But how would you in this case send params back to `create` or `update` >> to respectively know which associations (category_organisations) should be >> created and which deleted? >> >> Assigning to category_ids will create/delete rows in the join table as >> appropriate. >> >> Fred. >> > >> > Thanks, >> > Piotr >> > >> > >> > >> > W dniu wtorek, 19 kwietnia 2016 17:19:21 UTC+2 użytkownik Frederick >> Cheung napisał: >> > >> > >> > >> > >> > As long as you don't want the same form to be usable to create new >> categories, I wouldn't use nested attributes at all. >> > >> > >> > f.collection_check_boxes :category_ids, Category.all, :id, :name >> > >> > >> > will render a checkbox and label for each category, and the check box >> will be ticked if category_ids contains the element (there are plenty of >> options to customise the generated markup). I'm not entirely sure what >> happens if you assign to foo_ids but the overall save fails and rolls back. >> If you run into issues there I'd add a virtual attribute to hold the >> assigned ids and actually set category_ids from a before_save or similar. >> > >> > >> > Fred >> >> -- >> You received this message because you are subscribed to the Google Groups >> "Ruby on Rails: Talk" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected] <javascript:>. >> To post to this group, send email to [email protected] >> <javascript:>. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/rubyonrails-talk/8b2c9630-8070-4ae8-8bf5-8749f77cb992%40googlegroups.com >> . >> For more options, visit https://groups.google.com/d/optout. >> > > -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/rubyonrails-talk/d3fe067d-5611-4dc6-9ba7-580c6e55e878%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
