This is the first step is some more refactorings to come in the future
with the goal of making MVC less monolythic. This makes the core of MVC
more reusable and more in line with the design of other vNext platform
components.
With this change, Mvc.Core contains just the minimal guts needed to build
a working app.
- Action Discovery
- Action Invoker
- Filters
- ObjectResult
- Model Metadata
- Model Binding
- Formatters
- Validation System
And yes, we are aware of the irony of 'minimal MVC' not including the view
system. The idea is that this is the kernel of an MVC app, and anything
real is layered on top.
The most noticable impact of this change is that MvcOptions has been blown
apart into more managable chunks. See the various ConfigureMvc*** methods.
The new Mvc.Extensions package is a placeholder while we evaluate and tune
the new definitions. Expect more changes as features are move to their own
packages, and in some case their own repositories.
For now there is no experience to bootstrap an Mvc.Core app. That's coming
next.
services
* Added WithControllersFromServiceProvider that replaces the default
controller activator with a service based one.
* Move activation to DefaultControllerFactory
* Modify [Activate] behavior so that it no longer activates services. Use
[FromService] attribute to hydrate services
Fixes#1707
This change moves controller creation to the stage immediately before
model binding. The controller will be disposed/released before Resource
Filters run their 'OnResourceExecuted' method. Previously the controller's
lifetime surrounded all filter invocation.
Additionally, the Controller property is now gone from ActionContext, and
is moved to the 4 filter contexts that should have access to it
Action*Context and Result*Context.
This is a new filter stage that surrounds the existing model binding,
action, and result parts of the pipeline. Resource Filters run after
Authorization Filters.
The other major change is to support one of the primary scenarios for
Resource Filters. We want a filter to be able to modify the inputs the
model binding (formatters, model binders, value providers, etc) -- this
means that those changes need to be held on a context object and preserved
so that they can be used in the controller.
So, IActionBindingContextProvider is removed - the ActionBindingContext
will be created by the invoker. For now it will be part of the action
context.
- ensure `ViewDataDictionary` constructors are not passed a `null` or
`Mock.Of<IModelMetadataProvider>()` instance
- `ViewDataDictionary` constructors always use the `IModelMetadataProvider`
- `viewData.ModelMetadata` now never `null`
- `ViewDataDictionary<int>.Model` no longer throws if read before it's written
- `ViewDataDictionary.ModelMetadata` now copied to new instances in fewer cases
- e.g. don't use unusual `object` datatype with customized `ModelMetadata`
Ryan Nowak
Chris R
N. Taylor Mullen
Stephen Halter
Pranav K
Doug Bunting
David Fowler