again, what David said. I see you actually do want a many-to-many and you do not want just the wizard style, because what you want is an "attributed" correlation table - because you want an attribute called "isToReceiveEmail" or whatever to be right there.
I have never really seen any value in the flatten relationships and basically never use the wizard's to-many either, because I at least want to store the date created or adjusted on just about any object saved to the database, including many-to-many - so I don't see many uses for those without any attributes at all anyway. On Apr 15, 2013, at 11:34 AM, Theodore Petrosky <[email protected]> wrote: > so if I am creating the relationship, it is m-to-m and I take off the flatten > check box. > > then I create an attribute in the new ProjectUser table, boolean > 'isToReceiveEmail'. > > Ted > > --- On Mon, 4/15/13, David LeBer <[email protected]> wrote: > >> From: David LeBer <[email protected]> >> Subject: Re: first attempt at many to many >> To: "Theodore Petrosky" <[email protected]> >> Cc: "WebObjects Development" <[email protected]> >> Date: Monday, April 15, 2013, 11:14 AM >> Theodore, >> >> Do you already have a m-to-m between User and Project? Or is >> assumed that all users have access to all projects? >> >> If all you need to do is decide who gets emails for a given >> project then a simple m-to-m will do. >> >> i.e: User >> <<--emailRecipients----------projects-->> >> Project >> >> Any user in the project's emailRecipients array will receive >> emails. >> >> If you already have a m-to-m between User and Project, then >> you will want to add a flag on the join table >> (isEmailRecipient) and expose that table as an entity. >> >> But! You also will have to unflatten the m-to-m relationship >> and treat it like the individual relationships and entities >> that is is. EOF will cannot handle a flattened m-to-m >> relationship if you need access to the join entity. >> >> i.e: User >> <--user--projectDetails->>ProjectUser<<--userDetails---project-->Project >> >> How you choose to implement the UI will depend on how you >> end up modelling this. >> >> D >> >> -- >> David LeBer >> Codeferous Software >> >> On 2013-04-15, at 10:15 AM, Theodore Petrosky <[email protected]> >> wrote: >> >>> Are there any examples of working with a many to many >> relationship in a D2W app? I need to figure this out. >>> >>> I have and entity Project and an entity User. My client >> has asked that I add a function to allow them to choose >> which User(s) will get an email if the Project gets changed. >> Of course now it is on a project by project basis!!! >>> >>> So I thought I would create a many to many >> relationship, then each project would be populated with the >> users that could get an email. The each user list had a >> 'isSelecteToReceiveEmail' check box. but I dont understand >> where this value is stored? >>> >>> Is it in the ProjectUser 'union' table? I was under the >> impression that I don't touch this table. >>> >>> of course I could just make a textarea and have them >> type in a comma separated list of email addresses. >>> _______________________________________________ >>> Do not post admin requests to the list. They will be >> ignored. >>> Webobjects-dev mailing list ([email protected]) >>> Help/Unsubscribe/Update your Subscription: >>> https://lists.apple.com/mailman/options/webobjects-dev/dleber_wodev%40codeferous.com >>> >>> This email sent to [email protected] >> >> > > _______________________________________________ > Do not post admin requests to the list. They will be ignored. > Webobjects-dev mailing list ([email protected]) > Help/Unsubscribe/Update your Subscription: > https://lists.apple.com/mailman/options/webobjects-dev/jtayler%40oeinc.com > > This email sent to [email protected] _______________________________________________ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list ([email protected]) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com This email sent to [email protected]
