//-------------------- COMMON LINK PROPERTY GENERATION METHODS ----------------------
public ActionUrlLink BuildActionUrlLink <TController>(Expression <Action <TController, TResource> > action)
where TController : Controller
{
if (action == null)
{
throw new ArgumentNullException(nameof(action), "Controller Action selector not specified.");
}
var actionLink = new ActionUrlLink();
var actionSelector = new ActionUrlSelector <TController, TResource>(actionLink, action);
actionSelector.SetRouteInfo();
return(actionLink);
}
// Called for action link containing information based on an expression, specified at compile time, selecting a
// controller's action method. The expression also specifies which resource properties should be used for
// the action's route parameters.
private Link SetLinkUrl(ResourceContext context, ActionUrlLink actionLink)
{
string controllerSuffix = context.RestModule.GetControllerSuffix();
string controllerName = actionLink.Controller.Replace(controllerSuffix, "");
var routeValues = GetModelRouteValues(context, actionLink);
var link = new Link
{
// Delegate to ASP.NET Core to get the URL corresponding to the route-values.
Href = context.UrlHelper.Action(actionLink.Action, controllerName, routeValues),
Templated = false,
Methods = actionLink.Methods.ToArray()
};
UpdateLinkDescriptorsAndResource(context, actionLink, link);
return(link);
}
// For each controller action argument execute the cached expression on the resource
// to get the corresponding resource property value.
private Dictionary <string, object> GetModelRouteValues(ResourceContext context, ActionUrlLink halLink)
{
var modelRouteValues = new Dictionary <string, object>(halLink.RouteValues.Count);
foreach (ActionParamValue actionParam in halLink.RouteValues)
{
modelRouteValues[actionParam.ActionParamName] = actionParam.GetModelPropValue(context.Resource);
}
return(modelRouteValues);
}
