December 2013
Beginner to intermediate
222 pages
5h 13m
English
Content preview from Grails 2: A Quick-Start Guide
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One-to-One Relationships
In Figure 3, Diagram of the TekEvent class, the organizer property is shown as a TekUser, but in our current TekEvent, it’s still a String. Now that we have a TekUser, we can fix this discrepancy. Let’s open TekDays/grails-app/domain/com/tekdays/TekEvent.groovy and change the organizer from a String to a TekUser:
| model.0.2/TekDays/grails-app/domain/com/tekdays/TekEvent.groovy | |
| | String city |
| | String name |
* | TekUser organizer |
| | String venue |
| | Date startDate |
| | Date endDate |
| | String description |
We have now joined the TekEvent and TekUser classes in a one-to-one relationship. Each TekEvent instance can have exactly one TekUser. That was simple enough; however, if we save this and try to run our application, we’ll get ...
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