it doesn't work with me despite i made exactly like documentation....when i make a master it completed good but child it gives me a lot of errors while migration 1- says (Error occurred on DB migration step! Make sure the project is compiled and working. Command output: Build started... Build failed. Use dotnet build to see the errors.) 2- when open the code i found property [ public Guid OrderId ] twice ???? why ???? 3- In folder orderDbSet it gives me an error with namespace
- ABP Framework version: 8.0.0
- UI Type: MVC
- Database System: EF Core (SQL Server)
- Exception message and full stack trace:
3 Answer(s)
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Hi, it seems you have added
OrderIdas either as a property or to establish a one-to-many relationship with theOrderentity in your child entity (OrderLinein this example). You don't need to establish one to many relationships, the master-child relationship is enough for the relation, otherwise, it's normal to seeOrderIdas duplicated.
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OrderLine.cs|OrderLineDto.cs| | --- | --- | |
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So, your
OrderLineentity definition should be as follows:
If you want you can establish one-to-many relationship with other entities, but not with the master entity.
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Thank you it works perfectly but i have another question if the child and master is enough why do you put (Navigation tab and 1-n relation)??
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Thank you it works perfectly but i have another question if the child and master is enough why do you put (Navigation tab and 1-n relation)??
You can establish a relationship with another entity (except the master entity itself). For example, you can have
Order,OrderLine, andProductentities and want to establish a one-to-many relationship betweenOrderLineandProduct(OrderLine can have multiple products). In this case, it's useful and needed for your use case.I close the question since your question is answered. Please create a new ticket, if you have further questions. Best regards.
