I have a model like this:
public PurchaseOrder
{
[Required] [StringLength(15)]
public virtual string OrderNumber {get;set;}
// etc.
}
When I submit an order from the view (using $.post, not input type=submit) it goes to my controller class:
public class PurchaseOrderController
{
public JsonResult Save(PurchaseOrder order)
{
// TryUpdateModel(order); // commented out since modelstate.isvalid remains false anyway
if (ModelState.IsValid)
{
// its never valid
}
}
}
ModelState.IsValid always returns false, with the error: "The Order Number field is required." But there is a value in this field (?? why)
Why would it say "value is required" when it does have a value? Have I missed something? Is it because of the $.post instead of the submit? What can I do?
This is what the debugger looks like:
EDIT: Extra info....
I really think that for some reason the model binding is not happening. When I try this code found here: )
if (!ModelState.IsValid)
{
ModelState.Clear();
ModelMetadata modelMetadata = ModelMetadataProviders.Current.GetMetadataForType(() => order, order.GetType());
ModelValidator compositeValidator = ModelValidator.GetModelValidator(modelMetadata, base.ControllerContext);
foreach (ModelValidationResult result in compositeValidator.Validate(null))
{
this.ModelState.AddModelError(result.MemberName, result.Message);
}
}
Then ModelState.IsValid = true. compositeValidator.Validate() returns 0 errors. I think this indicates the model was not bound, but I still don't know why.
The controller method actually looks like this (I missed out the filter when originally writing this question)
[JsonFilter(Param = "order", JsonDataType = typeof(PurchaseOrder))]
public JsonResult Save(PurchaseOrder order) { // etc ... }
And the JsonFilter does this to extract the POCO from the json submitted data:
filterContext.ActionParameters[Param]
= jsSerializer.Deserialize(inputContent, JsonDataType);
I put a breakpoint on this line, and order is valid, plus order.OrderNumber has the correct value.
So still unresolved, but hopefully this extra info will help with finding a solution