I could create ViewModels in my Repository layer?

[Tiago Santos]

Geez, you got me a doubt. If in CQRS my Query Stack talks directly to the Data Layer and I use a Repository Pattern, in the rule, we must bring from the database only the data that I will actually show in the UI. So, could I make the query methods from my Repository return ViewModels? What if I could create these ViewModels in my Repository layer? Since if I create these ViewModels in my Application Layer and my Application Layer refers to the Data Layer, it will not be possible for me to return those ViewModels because they will be created in my Application Layer, which is what generally developers do.

[Peter Hageus]

One of the major benefits of CQRS is being able to bypass all the layers on the view/query side… Why do you need to layer and abstract a simple databasequery?

/Peter

On 14 Dec 2017, at 19:26, Tiago Santos <taigo...@gmail.com> wrote:

Geez, you got me a doubt. If in CQRS my Query Stack talks directly to the Data Layer and I use a Repository Pattern, in the rule, we must bring from the database only the data that I will actually show in the UI. So, could I make the query methods from my Repository return ViewModels? What if I could create these ViewModels in my Repository layer? Since if I create these ViewModels in my Application Layer and my Application Layer refers to the Data Layer, it will not be possible for me to return those ViewModels because they will be created in my Application Layer, which is what generally developers do.

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