throw error if heritage name already exits #659
Merged
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Part of #617
Currently you can do
If you have district A and district B, it is possible to go
and then go
For now we need to prevent heritages of the same name created from being created.
Note
Originally, I tried to do this inside BuildHeritage class, but the BuildHeritage class is also used in the reviewApp, and is used in both the create and find. So, I decided to handle it in the controller.