Two data sources in one create view - asp.net-mvc

This is what my data model classes look like:
public class Employee
{
public string FirstName { get; set; }
public string LastName { get; set; }
public Position Position { get; set; }
}
public class Position
{
public string Title { get; set; }
}
I have a Create view where I want to have two text boxes for first name and last name, and then a dropdown box that has the position title. I tried doing it this way:
View (only the relevant part):
<p>
<label for="Position">Position:</label>
<%= Html.DropDownList("Positions") %>
</p>
Controller:
//
// GET: /Employees/Create
public ActionResult Create()
{
ViewData["Positions"] = new SelectList(from p in _positions.GetAllPositions() select p.Title);
return View();
}
//
// POST: /Employees/Create
[AcceptVerbs(HttpVerbs.Post)]
public ActionResult Create(Employee employeeToAdd)
{
try
{
employeeToAdd.Position = new Position {Title = (string)ViewData["Positions"]};
_employees.AddEmployee(employeeToAdd);
return RedirectToAction("Index");
}
catch
{
return View();
}
}
However, when I click submit, I get this exception:
System.InvalidOperationException was unhandled by user code
Message="There is no ViewData item of type 'IEnumerable<SelectListItem>' that has the key 'Positions'."
I'm pretty sure I'm doing this wrong. What is the correct way of populating the dropdown box?

You can store:
(string)ViewData["Positions"]};
in a hiddn tag on the page then call it like this
[AcceptVerbs(HttpVerbs.Post)]
public ActionResult Create(Employee employeeToAdd, string Positions)
{

In the Create() (WITH POST ATTRIBUTE) employee since the ViewData["Positions"] is not set you are getting this error. This value should form part of your post request and on rebinding after post should fetch it from store or get it from session/cache if you need to rebind this..
Remember ViewData is only available for the current request, so for post request ViewData["Positions"] is not yet created and hence this exception.
You can do one quick test... override the OnActionExecuting method of the controller and put the logic to fetch positions there so that its always availlable. This should be done for data that is required for each action... This is only for test purpose in this case...
// add the required namespace for the model...
protected override void OnActionExecuting(ActionExecutingContext filterContext)
{
// add your logic to populate positions here...
ViewData["Positions"] = new SelectList(from p in _positions.GetAllPositions() select p.Title);
}
There may be other clean solutions to this as well probably using a custom model binder...

I believe that ViewData is for passing information to your View, but it doesn't work in reverse. That is, ViewData won't be set from Request.Form. I think you might want to change your code as follows:
// change following
employeeToAdd.Position = new Position {Title = (string)ViewData["Positions"]};
// to this?
employeeToAdd.Position = new Position {Title = (string)Request.Form["Positions"]};
Good luck!

Related

In a post method, how to get compact parameters instead of all the object properties

Maybe the title is not so explicitly. Let me explain you my situation
I've got a get and post method in my controller. In the GET method, gets the entities from the database context
[HttpGet]
public ActionResult RecheckAssignment(short id)
{
var assignment = db.Assignments.Find(id);
Session["QuestionList"] = QuestionRepositoryManager.GetAllPossibleQuestionsFromJson(assignment.Content); // it's a list!
return View(Session["QuestionList"]);
}
Assignment entity contains as 10 properties. When I show this entities in the model, it shows uses all the properties, but when the user does post should get only two properties from it (Id string, Changed bool) in the POST METHOD.
I do not what to put inside of the method parameters.
[HttpPost]
public ActionResult RecheckAssignment(...)
{
return View();
}
I put everything in a session variable because later I must have to get the entities again, I guess this is a good option using Session but I'm not sure.
So, what should I have to write inside of the method to get only the Id and Changed properties to updated the entities.
When ASP.NET MVC maps a <form> back to the Action during a POST it will fill in what it can. Consider a class like this:
public class Car
{
public string Make { get; set; }
public string Model { get; set; }
public int Year { get; set; }
}
and now consider this form:
#using (Html.BeginForm("ActionName", "ControllerName", FormMethod.Post))
{
Html.TextBoxFor(m => m.Make)
}
and now consider this Action:
public ActionResult ActionName(Car model)
{
// the values of Car will look like this
model.Make // this will be what was in the text box
model.Model // this will be null
model.Year // this will be 0
}
and take note that null and 0 are the default values for those types. So, if I wanted to POST the property Model I need to get it in the form. I can do that with #Html.TextBoxFor, but what if I don't want the user to see it? Well, I can do that too:
Html.HiddenFor(m => m.Model);
and so now when the form is POSTed it will populate the Model with the value it was downloaded with. So, just make sure that all the properties you need are in the form in some way.

MVC 3 Edit Function not working

I can't seem to get the edit function of my view to work..i have a page that lists, a page that shows specific detail and on that page, i should be able to edit the information of the form..PROBLEM: when i run the application it says:No parameterless constructor defined for this object. What am i doing wrong...?
In the Home Controller i have:
Edit Functions:
[HttpGet]
public ViewResult EditSchoolDetails(int id)
{
var institution = _educationRepository.GetInstititionById(id);
var model = (Mapper.Map<Institution, InstitutionModel>(institution));
return View(model);
}
post
[HttpPost]
public ActionResult EditSchoolDetails( InstitutionModel institutionModel, int id)
{
if (ModelState.IsValid) {
//_get from repository and add to instituion
var institution = _educationRepository.GetInstititionById(institutionModel.Id);
// Map from the view model back to the domain model
var model = Mapper.Map<Institution, InstitutionModel>(institution);
//UpdateModel(model);
SaveChanges();
return RedirectToAction("ViewSchoolDetails", new {institutionModel = institutionModel, id = id});
}
return View(institutionModel);
}
InstitutionModel
public class InstitutionModel {
public InstitutionModel() {
NAABAccreditations = new List<AccreditationModel>();
}
public int Id { get; set; }
public string Name { get; set; }
public bool IsNAAB { get { return NAABAccreditations.Any(); } }
public string Website { get; set; }
public AddressModel Address { get; set; }
public IEnumerable<AccreditationModel> NAABAccreditations { get; set; }
}
Does the Institution class have a parameterless constructor? If not, that will be the problem. You are passing an InstitutionModel to the the edit view, so the post action should probably take an InstitutionModel too, then you can map back to the original Institution model:
public ActionResult EditSchoolDetails(int id, InstitutionModel institutionModel)
{
if (ModelState.IsValid)
{
//add to database and save changes
Institution institutionEntity = _educationRepository.GetInstititionById(institution.Id);
// Map from the view model back to the domain model
Mapper.Map<InstitutionModel, Institution>(institutionModel, institutionEntity);
SaveChanges();
return RedirectToAction("ViewSchoolDetails",);
}
return View(institutionModel);
}
Notice also how it returns the view model back to the view if the model state isn't valid, otherwise you will lose all your form values!
Here's a similar question too which might help: ASP.NET MVC: No parameterless constructor defined for this object
Is it possible you need to pass a parameter to ViewSchoolDetails? I notice in the return statement you commented out that you were passing it an id, but in the return statement you're using, you're not passing in anything.
EDIT
This (from your comment below):
parameters dictionary contains a null entry for parameter 'id' of non-nullable type 'System.Int32' for method 'System.Web.Mvc.ActionResult ViewSchoolDetails(Int32)
...tells me you need to pass a parameter to ViewSchoolDetails
EDIT 2
I saw your edit, and would say this: if the method you are calling is
public ActionResult ViewSchoolDetails(InstitutionModel institutionModel, int id)
Then you MUST pass it an object of type InstitutionModel and an int as parameters or you will get an exception. Meaning, you need
RedirectToAction("ViewSchoolDetails", new {institutionModel = institutionModel, id = id});
Whenever i get this, i have forgotten to create a parameter-less constructor on my view-model. I always add one now just in case it's needed and i forget.
Does InstitutionModel have one?

Survey Controller POST method problems ASP.NET MVC

I'm attempting to create a single Controller class to handle all foreseeable surveys that I'll end up creating in the future. Currently I have a 'Surveys' table with fields: Id, SurveyName, Active. On the 'master' Surveys' Index page I list out every SurveyName found in that table. Each SurveyName is clickable, and when clicked on, the page sends the SurveyName as a string to the receiving controller action. Said controller action looks like this:
//
//GET: /Surveys/TakeSurvey/
public ActionResult TakeSurvey(string surveyName)
{
Assembly thisAssembly = Assembly.GetExecutingAssembly();
Type typeToCreate = thisAssembly.GetTypes().Where(t => t.Name == surveyName).First();
object newSurvey = Activator.CreateInstance(typeToCreate);
ViewBag.surveyName = surveyName;
return View(surveyName, newSurvey);
}
Using reflection I am able to create a new instance of the type (Model) designated by the passed-in string 'surveyName' and am able to pass that Model off to a view with the same name.
EXAMPLE
Someone clicks on "SummerPicnic," the string "SummerPicnic" is passed to the controller. The controller, using reflection, creates a new instance of the SummerPicnic class and passes it to a view with the same name. A person is then able to fill out a form for their summer picnic plans.
This works all fine and dandy. The part that I'm stuck at is trying to save the form passed back by the POST method into the correct corresponding DB table. Since I don't know ahead of time what sort of Model the controller will be getting back, I not only don't know how to tell it what sort of Model to save, but where to save it to, either, since I can't do something ridiculous like:
//
//POST: Surveys/TakeSurvey
[HttpPost]
public ActionResult TakeSurvey(Model survey)
{
if (ModelState.IsValid)
{
_db. + typeof(survey) + .Add(survey);
_db.SaveChanges();
return RedirectToAction("Index", "Home");
}
return View();
}
Is there a way to do this, or should I go about this from a whole different angle? My ultimate goal is to have a single Controller orchestrating every simple-survey, so I don't have to create a separate controller for every single survey I end up making down the road.
An alternative solution I can think of is to have a separate method for every survey, and to have which method to call defined inside of every survey's view. For example, if I had a SummerPicnic survey, the submit button would call an ActionMethod called 'SummerPicnic':
#Ajax.ActionLink("Create", "SummerPicnic", "Surveys", new AjaxOptions { HttpMethod = "POST" })
A survey for PartyAttendance would call an ActionMethod 'PartyAttendance,' etc. I'd rather not have to do that, though...
UPDATE 1
When I call:
_db.Articles.Add(article);
_db.SaveChanges();
This is what _db is:
private IntranetDb _db = new IntranetDb();
Which is...
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Data.Entity;
using System.Data.Entity.ModelConfiguration.Conventions;
namespace Intranet.Models
{
public class IntranetDb : DbContext
{
public DbSet<Article> Articles { get; set; }
public DbSet<ScrollingNews> ScrollingNews { get; set; }
public DbSet<Survey> Surveys { get; set; }
public DbSet<Surveys.test> tests { get; set; }
protected override void OnModelCreating(DbModelBuilder modelBuilder)
{
modelBuilder.Conventions.Remove<PluralizingTableNameConvention>();
}
}
}
You can try something like this,
UPDATE:
The built-in UpdateModel will work with generic model see this post, so we got little more work.
[HttpPost]
public ActionResult TakeSurvey(FormCollection form, surveyName)
{
var surveyType = Type.GetType(surveyName);
var surveyObj = Activator.CreateInstance(surveyType);
var binder = Binders.GetBinder(surveyType);
var bindingContext = new ModelBindingContext()
{
ModelMetadata = ModelMetadataProviders.Current.GetMetadataForType(() => surveyObj, surveyType),
ModelState = ModelState,
ValueProvider = form
};
binder.BindModel(ControllerContext, bindingContext);
if (ModelState.IsValid)
{
// if "db" derives from ObjectContext then..
db.AddObject(surveyType, surveyObj);
db.SaveChanges();
// if "db" derives from DbContext then..
var objCtx = ((IObjectContextAdapter)db).ObjectContext;
objCtx.AddObject(surveyType, surveyObj);
db.SaveChanges();
return RedirectToAction("Index", "Home");
}
return View();
}
Check this two know the diff between DbContext and ObjectContext
I ended up with a slightly modified version of Mark's code:
[HttpPost]
public ActionResult TakeSurvey(string surveyName, FormCollection form)
{
//var surveyType = Type.GetType(surveyName);
//var surveyObj = Activator.CreateInstance(surveyType);
// Get survey type and create new instance of it
var thisAssembly = Assembly.GetExecutingAssembly();
var surveyType = thisAssembly.GetTypes().Where(t => t.Name == surveyName).First();
var newSurvey = Activator.CreateInstance(surveyType);
var binder = Binders.GetBinder(surveyType);
var bindingContext = new ModelBindingContext()
{
ModelMetadata = ModelMetadataProviders.Current.GetMetadataForType(() => newSurvey, surveyType),
ModelState = ModelState,
ValueProvider = form
};
binder.BindModel(ControllerContext, bindingContext);
if (ModelState.IsValid)
{
var objCtx = ((IObjectContextAdapter)_db).ObjectContext;
objCtx.AddObject(surveyName, newSurvey);
_db.SaveChanges();
return RedirectToAction("Index", "Home");
}
return View();
}
I was running into surveyType being 'null' when it was set to Type.GetType(surveyName); so I went ahead and retrieved the Type via Reflection.
The only trouble I'm running into now is here:
if (ModelState.IsValid)
{
var objCtx = ((IObjectContextAdapter)_db).ObjectContext;
objCtx.AddObject(surveyName, newSurvey);
_db.SaveChanges();
return RedirectToAction("Index", "Home");
}
When it tries to AddObject I'm getting the exception "The EntitySet name 'IntranetDb.test' could not be found." I just need to figure out to strip off the prefix 'IntranetDb.' and hopefully I'll be in business.
UPDATE
One thing I completely overlooked was passing the Model to the controller from the View...oh bother. I currently have an ActionLink replacing the normal 'Submit' button, as I wasn't sure how else to pass to the controller the string it needs to create the correct instance of Survey model:
<p>
#Ajax.ActionLink("Create", "TakeSurvey", "Surveys", new { surveyName = ViewBag.surveyName }, new AjaxOptions { HttpMethod = "POST" })
#*<input type="submit" value="Create" />*#
</p>
So once I figure out how to turn 'IntranetDb.test' to just 'test' I'll tackle how to make the Survey fields not all 'null' on submission.
UPDATE 2
I changed my submission method from using an Ajax ActionLink to a normal submit button. This fixed null values being set for my Model values after I realized that Mark's bindingContext was doing the binding for me (injecting form values onto the Model values). So now my View submits with a simple:
<input type="submit" value="Submit" />
Back to figuring out how to truncate 'IntranetDb.test' to just 'test'...
Got It
The problem lies in my IntranetDb class:
public class IntranetDb : DbContext
{
public DbSet<Article> Articles { get; set; }
public DbSet<ScrollingNews> ScrollingNews { get; set; }
public DbSet<SurveyMaster> SurveyMaster { get; set; }
public DbSet<Surveys.test> tests { get; set; }
protected override void OnModelCreating(DbModelBuilder modelBuilder)
{
modelBuilder.Conventions.Remove<PluralizingTableNameConvention>();
}
}
objCtx.AddObject(surveyName, newSurveyEntry); was looking for an entry (an "EntitySet") in the IntranetDb class called "test." The problem lies in the fact that I don't have an EntitySet by the name of "test" but rather by the name of "tests" with an 's' for pluralization. Turns out I don't need to truncate anything at all, I just need to point to the right object :P Once I get that straight I should be in business! Thank you Mark and Abhijit for your assistance! ^_^
FINISHED
//
//POST: Surveys/TakeSurvey
[HttpPost]
public ActionResult TakeSurvey(string surveyName, FormCollection form)
{
//var surveyType = Type.GetType(surveyName);
//var surveyObj = Activator.CreateInstance(surveyType);
// Create Survey Type using Reflection
var thisAssembly = Assembly.GetExecutingAssembly();
var surveyType = thisAssembly.GetTypes().Where(t => t.Name == surveyName).First();
var newSurveyEntry = Activator.CreateInstance(surveyType);
// Set up binder
var binder = Binders.GetBinder(surveyType);
var bindingContext = new ModelBindingContext()
{
ModelMetadata = ModelMetadataProviders.Current.GetMetadataForType(() => newSurveyEntry, surveyType),
ModelState = ModelState,
ValueProvider = form // Get values from form
};
var objCtx = ((IObjectContextAdapter)_db).ObjectContext;
// Retrieve EntitySet name for Survey type
var container = objCtx.MetadataWorkspace.GetEntityContainer(objCtx.DefaultContainerName, DataSpace.CSpace);
string setName = (from meta in container.BaseEntitySets
where meta.ElementType.Name == surveyName
select meta.Name).First();
binder.BindModel(ControllerContext, bindingContext); // bind form values to survey object
if (ModelState.IsValid)
{
objCtx.AddObject(setName, newSurveyEntry); // Add survey entry to appropriate EntitySet
_db.SaveChanges();
return RedirectToAction("Index", "Home");
}
return View();
}
It's kind of bloated but it works for now. This post helped me get the EntitySet from the Survey object itself so I didn't need to worry about establishing some sort of EntitySet naming convention.
The main problem I see is to bind to the model to the TakeSurvey POST method. If you want different types of survey models should be handled by this method and MVC should bind to this model before calling the action, I believe you can have a wrapper model class over all such generic model, say SurveyModel and use custom model binder to bind to these models.
public class SurveyModel
{
public string GetSurveyModelType();
public SummerPicnicSurvey SummerPicnicSurvey { get; set; }
public PartyAttendanceSurvey PartyAttendanceSurvey { get; set; }
}
Then write a custom mobel binder to bind this model. From the request form fields we can see what type of survey model is posted and then accordingly fetch all the fields and initialize the SurveyModel class. If SummerPicnicSurvey is posted then class SurveyModel will be set with this class and PartyAttendanceSurvey will be null. Example custom model binder.
From the controller action TakeSurvey POST method, You can update db like this:
[HttpPost]
public ActionResult TakeSurvey(SurveyModel survey)
{
if (ModelState.IsValid)
{
if(survey.GetSurveyModelType() == "SummerPicnicSurvey")
_db.UpdateSummerPicnicSurvey(survey.SummerPicnicSurvey);
else if (survey.GetSurveyModelType() == "PartyAttendanceSurvey")
_db.UpdateSummerPicnicSurvey(survey.PartyAttendanceSurvey);
_db.SaveChanges();
return RedirectToAction("Index", "Home");
}
return View();
}
Instead of SurveyModel encapsulating the other surveys you can have inheritance and use .net as to typecast with a check and use the Model.
Having said this, I think there is no harm in using different methods for each model. This will enable you to unit test the code well. Too many if else is not healthy to maintain. Or you can transfer the generic model SurveyModel to the repository or data access layer and let it handle that in a polymorphic way. I would prefer more small functions and keep the code clean.
Edit: The inheritance way:
public class SurveyModel
{
public virtual bool Save();
}
public partial class SummerPicnicSurvey : SurveyModel
{
public bool Save(SummerPicnicSurvey survey)
{
using(var _dbContext = new MyContext())
{
_dbContex.SummerPicnicSurveys.Add(survey);
_dbContex.SaveChanges();
}
}
}
[HttpPost]
public ActionResult TakeSurvey(SurveyModel survey)
{
if (ModelState.IsValid)
{
survey.Save();
return RedirectToAction("Index", "Home");
}
return View();
}
Any new Survey model type you add has to implement the SaveChanges or Save method, Which would call the proper dbcontext method. The controller action would just call Save on the generic `SurveyModel' reference passed to it. Thus the action will be closed for modification but open for modification. The open-close design principle.

MVC: I am using MultiSelectList and when I select two values it just sends one value?

I using MVC-Viewmodel in my project, my problem is that even if i CTRL-click two values in my listbox It only grabs one value. I want users to be able to select two values but I dont know why it doesnt happen any tips is appreciated!
Here is my GET n POST action inside my controller:
public ActionResult Create()
{
CreateViewModel model = new CreateViewModel();
List<CoreValue> corevalues = Arep.getallC();
model.CoreValuess = new MultiSelectList(corevalues, "CID", "Cname");
return View(model);
}
[HttpPost]
public ActionResult Create(CreateViewModel model)
{
if (ModelState.IsValid)
{
Question q = new Question();
var CoreValueID = int.Parse(model.Cname);
var getallC = Arep.getbycid(CoreValueID);
q.CoreValue.Add(getallC);
q.QuestionText = model.QuestionText;
Arep.addquestion(q);
Arep.save();
return RedirectToAction("Index");
}
return View(model);
This is inside my CreateViewModel:
public MultiSelectList CoreValues { get; set; }
And this is inside my View:
#Html.ListBoxFor(model => model.Cname,Model.Corevaluess)
What seem to be the problem?
Thanks in Advance!
Best Regards
Spelling errors aside, I believe the following is why this is failing:
In your ListBoxFor method, you are using model.Cname. By this, I believe you mean "choose the cName of selected CoreValues". However (and I'm guessing because I can't see your model), the Cname property on the CreateViewModel is of type string. Because of this, you are only ever going to have one value at a time. You need a property that is of type IEnumerable in order to hold multiple selections.
Update your model to the following:
public class CreateViewModel
{
public IEnumerable<string> SelectedValues { get; set; }
public IEnumerable<CoreValue> CoreValues { get; set; }
}
SelectedValues will be used to contain the selected values on the post. We can also add items to it to signify what should be automatically selected when the view is created.
In your controller do the following:
public ActionResult Create()
{
CreateViewModel model = new CreateViewModel();
model.CoreValues = Arep.getallC();
return View(model);
}
Lastly, update the view:
#Html.ListBoxFor(m => m.SelectedValues, new MultiSelectList(Model.CoreValues, "CID", "Cname"))
Now, whenever you post, you should be able to see the values that a user selected.
EDIT: I'm not completely sure what some of your methods do so I'm taking a guess.
The POST method for Create:
[HttpPost]
public ActionResult Create(CreateViewModel model)
{
if (ModelState.IsValid)
{
foreach(var CoreValueID in model.SelectedValues)
{
Question q = new Question();
var getallC = Arep.getbycid(CoreValueID);
q.CoreValue.Add(getallC);
q.QuestionText = model.QuestionText;
Arep.addquestion(q);
}
Arep.save();
return RedirectToAction("Index");
}
return View(model);
}
you would need to pass selectedvalues as below
List<CoreValue> selectedvalues = Null;
model.CoreValuess = new MultiSelectList(corevalues, "CID", "Cname",selectedvalues);
return View(model);
Refer MSDN link and this helpful Article
As stated above, the ASP.Net Mvc wants to have a list of string, but the same thing can be achieved by using the classic ASP style
Request.Form["CoreValues"]
this will provide as comma separated values.

Multiple Submit Buttons in MVC3 - FormCollection has no Key/Value for Input Type Submit - Remote Validation Issue?

I have the two buttons in MVC3 application.
<input type="submit" name="command" value="Transactions" />
<input type="submit" name="command" value="All Transactions" />
When I click on a button, it posts back correctly but the FormCollection has no "command" keys. I also added a property "command" in the model and its value is null when the form is posted.
public ActionResult Index(FormCollection formCollection, SearchReportsModel searchReportsModel). {
if (searchReportsModel.command == "All Transactions")
...
else
....
}
I am using IE8. How can I use multiple buttons in MVC3? Is there a workaround for this issue? I did lot of research and could not find a solution.
Update:
Dave: I tried your solution and it is throwing Http 404 error "The resource cannot be found".
Here is my code:
[HttpPost]
[AcceptSubmitType(Name = "Command", Type = "Transactions")]
public ActionResult Index(SearchReportsModel searchReportsModel)
{
return RedirectToAction("Transactions", "Reports", new { ...});
}
[HttpPost]
[ActionName("Index")]
[AcceptSubmitType(Name = "Command", Type = "All Transactions")]
public ActionResult Index_All(SearchReportsModel searchReportsModel)
{
return RedirectToAction("AllTransactions", "Reports", new { ... });
}
public class AcceptSubmitTypeAttribute : ActionMethodSelectorAttribute
{
public string Name { get; set; }
public string Type { get; set; }
public override bool IsValidForRequest(ControllerContext controllerContext, MethodInfo methodInfo)
{
return controllerContext.RequestContext.HttpContext
.Request.Form[this.Name] == this.Type;
}
}
The issue was resolved after commenting the following Remote validation attribute in the ViewModel (SearchReportsModel). It looks like it is a bug in MVC3:
//[Remote("CheckStudentNumber", "SearchReports", ErrorMessage = "No records exist for this Student Number")]
public int? StudentNumber { get; set; }
You might be able to get away with an ActionMethodSelectorAttribute attribute and override the IsValidForRequest method. You can see below this method just determines whether a particular parameter (Name) matches one of it's properties (Type). It should bind with a view model that looks like this:
public class TestViewModel
{
public string command { get; set; }
public string moreProperties { get; set; }
}
The attribute could look like this:
public class AcceptSubmitTypeAttribute : ActionMethodSelectorAttribute
{
public string Name { get; set; }
public string Type { get; set; }
public override bool IsValidForRequest(ControllerContext controllerContext, MethodInfo methodInfo)
{
return controllerContext.RequestContext.HttpContext
.Request.Form[this.Name] == this.Type;
}
}
Then, you could tag your actions with the AcceptSubmitType attribute like this:
[AcceptSubmitType(Name="command", Type="Transactions")]
public ActionResult Index(TestViewModel vm)
{
// use view model to do whatever
}
// to pseudo-override the "Index" action
[ActionName("Index")]
[AcceptSubmitType(Name="command", Type="All Transactions")]
public ActionResult Index_All(TestViewModel vm)
{
// use view model to do whatever
}
This also eliminates the need for logic in a single controller action since it seems you genuinely need two separate courses of action.
Correct me If I'm wrong, but according to W3C standard you should have only 1 submit button per form. Also having two controls with identical names is a bad idea.
when you submit (on any button) your whole page is posted back to the controller action, I have had the same problem but have not found a decent solution yet.. maybe you could work with a javascript 'onclick' method and set a hidden value to 1 for the first button and 0 for the second button or something like that?
This is a nice Blog about this found here
I like the look of adding in AcceptParameterAttribute
#CodeRush: The W3C standard does allow more than 1 submit per form. http://www.w3.org/TR/html4/interact/forms.html. "A form may contain more than one submit button".

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