AddModalErrors and AllCountries page 87 View Data Dictionary

barnettrob · May 8th, 2009, 11:02 PM

When I try to use ModalState.AddModalErrors I get an error <'System.Web.Mvc.ModalStateDictionary' does not contain a definition for 'AddModalErrors'>.

Similarly, when I try to use AllCountries I get this error <'NerdDinner.Controllers.PhoneValidator' does not contain a definition for 'AllCountries'>

I cannot seem to track down where I all of the sudden went wrong. Can anyone point me in the right direction?

Thx for looking and any help.

sakshamgautam · June 10th, 2009, 06:36 AM

Hi barnettrob,
...AllCountries... should be just ...Countries... (Please take a look at the errata page)

As for the next problem, shouldn't it be AddModelErrors and not AddModalErrors?

Hope this helps!

S.

barnettrob · June 10th, 2009, 07:38 PM

Thank you for the Countries correction.

The second issue is still a problem as I had posted AddModalErrors but I actually did have the code, AddModelErrors. I had copied it from:

http://nerddinnerbook.s3.amazonaws.com/Part6.htm

it still errors:

'System.Web.Mvc.ModelStateDictionary' does not contain a definition for 'AddModelErrors' and no extension method 'AddModelErrors' accepting a first argument of type 'System.Web.Mvc.ModelStateDictionary' could be found (are you missing a using directive or an assembly reference?)

I checked the Errata but it does not offer a solution to that one.

Thanks for the other answer

sakshamgautam · June 11th, 2009, 03:52 AM

Hi barnettrob,
Are you missing using statement at the top of your class file? If you recall that you added an extension method in order to be able to add rule-violations to the ModelState dictionary directly. You need to add add reference to the namespace which contains the extension method definition from pages 70-71.

See if that works.

Good luck!

S.

sakshamgautam · June 12th, 2009, 01:25 PM

Hi barnettrob,
Did you manage to solve your problem? It would be helpful for other readers to know how you resolved your issue.

Thanks,
S.

barnettrob · June 13th, 2009, 09:28 AM

Sorry about that. No I have not solved the problem. I reverted all my code back to way it was at the end of Step 5. Everything was working as it should then (except for the page title on aspx pages, but no big deal there).

I was getting ready to start Step 6 again but I have not yet had a chance. Sometime soon - but I am prepping for a technical interview Tuesday. Even though it's a UI Developer position, they want someone who understands middle tier service code.

sakshamgautam · June 13th, 2009, 11:57 AM

Good luck for your interview.

S.

KPHutt · October 21st, 2009, 08:01 PM

Regarding your error: "'System.Web.Mvc.ModelStateDictionary' does not contain a definition for 'AddModelErrors' and no extension method 'AddModelErrors' accepting a first argument of type 'System.Web.Mvc.ModelStateDictionary' could be found (are you missing a using directive or an assembly reference?)"

I received the same error and noticed some inconsistencies in the text, unless I'm missing something?

In Part 5, they have you create this function:

Code:

public static class ControllerHelpers {
 
public static void AddRuleViolations(this ModelStateDictionary modelState, IEnumerable<RuleViolation> errors) {
 
foreach (RuleViolation issue in errors) {
modelState.AddModelError(issue.PropertyName, issue.ErrorMessage);
}
}
}

For the rest of the instructions on Part 5 , they consistently have you call 'AddRuleViolations'.

In Part 6, the same functions that were calling 'AddRuleViolations' are now calling 'AddModelErrors', such as:

Code:

//
// POST: /Dinners/Edit/5
 
[AcceptVerbs(HttpVerbs.Post)]
public ActionResult Edit(int id, FormCollection collection) {
 
Dinner dinner = dinnerRepository.GetDinner(id);
 
try {
UpdateModel(dinner);
 
dinnerRepository.Save();
 
return RedirectToAction("Details", new { id=dinner.DinnerID });
}
catch {
ModelState.AddModelErrors(dinner.GetRuleViolations());
 
return View(new DinnerFormViewModel(dinner));
}
}

I changed the name of the function 'AddRuleViolations' to 'AddModelErrors', which resolved my problem.

Did I miss something in the text, or is this an outdated version?

Regards,
Karsten

KPHutt · October 21st, 2009, 08:07 PM

Looks like this issue has already been noted here:

Chapter 1 - NerdDinner - Errors