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Last post Feb 28, 2013 05:28 AM by Kelmen
Feb 27, 2013 04:25 PM|LINK
Im building a new web app and am trying to create the best architecture incorporating design patterns and separation of concerns. Im using a book 'professional asp.net design patterns' which might not have been such a good idea for a beginner (in this
type of design anyway)
my solution consists of the mvc project itself then an application service layer, core layer (where my domain model lives - POCO), a data layer that holds the edmx file (entity framework 5) and an infrastructure layer (each of these is in a separate project
within the solution)
The book suggests the use of View models which use automapper to map from the poco classes. My question is this, why would I have 3 separate 'model' areas ? I understand the domain models (POCO), but what is the 'model' bit in the MVC project for ? If
I have view models in my domain model solution do these replace the models in the MVC project ? Im pretty new to MVC and design patterns so I appologise if this seems like a dumb question, but its confused me and Id appreciate any clarification or help.
Feb 27, 2013 05:48 PM|LINK
MVC stands for model-view-controller. MVC is a pattern for developing applications that are well architected and easy to maintain. MVC-based applications contain:
Feb 27, 2013 06:29 PM|LINK
I know what mvc stands for, my question was, why would I have 2 models ? the model in the MVC project and another view model in my domain model that maps to the POCO's. Im just confused why there would be 2.
Feb 27, 2013 06:39 PM|LINK
It's a combination of the seperation of concerns and loose coupling.
If you have different data/business logic, you'll need a new model or atleast you should.
Feb 28, 2013 05:28 AM|LINK
generally the (data) model is quite plain, practically is plain mapping to the actual backend.
but when you want to use the model in actual app, you find that you need more properties to better encapsulate complex info, so you came up another model "wrapper".
at the end, its still 1 model, just that it got another "plug-in" or addon.