Here's the visual of what I'm trying to do.
So basically what happens here is that you choose a name from the select on the left and a team from the select on the right, then click Submit Assignment and it adds a record. (This information is for reference so you can understand the context. I don't need help with the database inserts or updates.)
This is going to be a PartialView with a ViewModel.
I need to know how to populate those two dropdowns with separate lists. I'm assuming those would be coming over in the ViewModel.
So in my main view, I have a call to the PartialView with RenderAction.
//The action //The controller
#{Html.RenderAction("TeamAssignment", "TeamAssignment");}
The controller that gets called
public class TeamAssignmentController : Controller
{
MyDatabaseEntities db = new MyDatabaseEntities();
[ChildActionOnly]
public ActionResult TeamAssignment()
{
//NEED A VIEW MODEL HERE TO PASS INTO THE PARTIALVIEW
return PartialView();
}
}
In the ViewModel I will need lists that populate the two drop downs.
The linq query on the left for Name would be this.
var nameList = (from p in db.Participant
where p.ParticipantType == "I"
select new {
p.ParticipantID,
p.IndividualName
}).ToList();
The linq query on the right for Team would be this.
var teamList = (from p in db.Participant
where p.ParticipantType == "T"
select new {
p.ParticipantID,
p.TeamName
}).ToList();
How can I pass that information into the PartialView and how do I populate the dropdowns with the ID for value and name for display text?
UPDATE
I belive this may be the ViewModel I need. Is this correct?
public class TeamAssignmentViewModel
{
//Need these ints for the updating and deleting
public int IndividualParticipantID { get; set; }
public int TeamParticipantID { get; set; }
public List<Participant> NameList { get; set; }
public List<Participant> TeamList { get; set; }
}
You need to create an instance of a viewmodel, populate it and pass it to your PartialView:
[ChildActionOnly]
public ActionResult TeamAssignment()
{
// Instantiate A VIEW MODEL HERE TO PASS INTO THE PARTIALVIEW
MyCustomModel model = new MyCustomModel();
model.nameList = (from p in db.Participant
where p.ParticipantType == "I"
select p).ToList();
model.teamList = (from p in db.Participant
where p.ParticipantType == "T"
select p).ToList();
return PartialView("TeamAssignment", model);
}
EDITED: removed use of dynamic class in linq statements
The markup for the Dropdowns might look something like:
#Html.DropDownListFor(model => model.IndividualParticipantID,
new SelectList(Model.NameList, "ParticipantID", "FirstName")
#Html.DropDownListFor(model => model.IndividualParticipantID,
new SelectList(Model.TeamList, "ParticipantID", "Team")
I'll start by admitting that I haven't read everything posted, but I can help with passing data to the PartialView to be used as a model.
In your View, you can build the partial like this:
#Html.Partial("_PartialViewName", currentItem,
new ViewDataDictionary {
{ "ExtraValue", Model.Count },
{ "SecondExtraValue", #ViewBag.ValueToPass });
Then in the PartialView, you can do this:
#model [Type of currentItem from above]
#{
// I'm using var here for shorthand, whereas I do strong typing and cast in my codebase.
var dataValue = ViewData["ExtraValue"];
var secondDataValue = ViewData["SecondExtraValue"];
}
Using this method you can pass in a model, as well as other values that may be needed for rendering.
Hope this helps. :)
Related
Hi I have my class named PropertyDetailsModel that displays in View named "propertyForAll" all the data per Id.
I want if the user select one Id in View named "propertyForAll", it should be able to open a new page and only display on the new page, property for the selected Id.
So how would I pass data from view (where all the data is displayed ) to new page view. (when the user select one Id)
There's no db. ...FindById to use in the controller for the new page... as I see in many tutos... it's a different architecture made by solution architectures who left the company.
Can I loop through PropertyDetailsModel and pass it to the returnView()
public class PropertyDetailsModel
{
public int Id { get; set; }
public string Title { get; set; }
public string SubTitle { get; set; }
public string Description { get; set; }
...
}
Code for new page controller
[HttpGet]
public ViewResult displayItemSelected(int? id)
{
if (id == null)
{
return HttpNotFoundResult();
}
PropertyDetailsModel propertyModel;
propertyModel.Id
}
If you pass the model directly to View:
var propertyModel = new PropertyDetailsModel();
return View(propertyModel);
Then, in the RazorPage (I believe Model is of type object and therefore needs to be promoted/cast to the expected type):
<p>Property Name: #{((PropertyDetailsModel)Model).Name}</p>
Alternatively, you can pass arbitrary data to a View Page like so:
Both ViewData and ViewBag are accessible from within a Razor/View Page (.cshtml). ViewData is a Dictionary<string, object>, ViewBag is a dynamic.
If you just put the model in the ViewBag:
var propertyModel = new PropertyDetailsModel();
ViewBag.PropertyModel = propertyModel;
return View();
The RazorPage will be able to access ViewBag and by extension ViewBag.PropertyModel like so:
<p>Property Name: #{ViewBag.PropertyModel.Name}</p>
I am new to using the Entity Framework. I have added my Model, and I need to use two my models/tables in one View Page. So to do that I added this to my AccountViewModels.cs page:
public class category_menuitem
{
public Category Category { get; set; }
public MenuItem MenuItem { get; set; }
}
I am trying to use Values from those two Models/Tables.
My View Page:
using System.Data.SqlClient
#model IEnumerable<YourGoGetterV1.Models.category_menuitem>
#{
ViewBag.Title = "Show Menu" - ViewBag.restaurant_id;
}
<h2>ShowMenu</h2>
<div class="jumbotron">
#foreach (var item in Model)
{
<div><strong>#Html.DisplayFor(item1 => item.Category.Name)</strong>
<div>#Html.DisplayFor(item1 => item.Category.Description)</div>
#{
using (var context = new YourGoGetterContext())
{
SqlParameter sa = new SqlParameter("#p0", ViewBag.restaurant_id);
var menu_items = context.MenuItems.SqlQuery("Select * FROM MenuItems where restaurant_id = #p0", sa).ToList();
var test = "DID IT WORK??";
}
}
</div>
}
</div>
Controller:
public ActionResult ShowMenu(string id, int restaurant_id)
{
ViewBag.Id = id;
ViewBag.restaurant_id = restaurant_id;
return View(Models.category_menuitem.ToList((object(id)));
}
I want to cast the ID, so that it creates a different URL for something that passes in a different ID. But I'm having two problems.
1) I can't even put in the Models.Category_menuitem.ToList() because "No overload for method 'ToList' takes 1 arguments"
2)The Models.Category_menuitem does not contain a definition for ToList.
What do I do?
I think you should do it different. The model should contain the data you use in the view. So do your db requests in the model and give the model to the view to display the data in it. Don't do SQL requests in the view. You also should write classnames always in capital letters because of C# naming conventions.
If I understand it right you want to display a menubar or something like that with categories and each category has many menuitems?
Just create a model menuitems like this:
public class MenuItems {
public List<Category> Categories{get;set;}
}
and a model Category like this:
public class Category {
public string CategoryName {get;set;}
public List<MenuItem> MenuItems {get;set;}
}
Fill the models with data and give the MenuItems Model to the view. In the view you can do something like:
#foreach (var category in Model.Categories)
{
foreach (var menuItem in category.MenuItems)
{
}
}
I hope this helps ;)
To this part of your code:
var menu_items = context.MenuItems.SqlQuery("Select * FROM MenuItems where restaurant_id = #p0", sa).ToList();
I am not sure what you wanna do. You are querying the db for data which should be already in the model or am I wrong? But if you want to use EF you would write:
var items = context.Menuitems.Where(m => m.restaurant_id == id).ToList();
I am in the habit of using nested loops in classic. Data from the first record set is passed to the second record set. How would I accomplish the same thing in MVC? As far as I can tell, I can only have one model passed to my view.
<%
rs.open "{Call usp_SalesOrder}",oConn
Do While (NOT rs.EOF)
%>
<div><% = rs("SalesOrderNumber")%></div>
<%
rs2.open "{Call usp_SalesOrderLines(" & rs("SOKey") & ")}",oConn
Do While (NOT rs.EOF)
%>
<div><% = rs2("SalesOrderLineNumber")%></div>
<%
rs2.MoveNext
Loop
rs2.close
%>
<%
rs.MoveNext
Loop
rs.close
%>
My suggestion would be to build a more robust model. It is true that you can only pass one model to your view, but your model can contain the results of multiple data sets, provided you have gathered those data sets in your controller and assigned them to the model.
I also suggest staying away from the ViewBag. It's an easy trap to fall into. Trust me when I say you'll regret it later.
For your example, maybe a model defined like this:
public class MyModel
{
public List<SalesOrder> SalesOrders = new List<SalesOrder>();
}
public class SalesOrder
{
public string SOKey = string.Empty;
public List<SalesOrderLine> SalesOrderLines = new List<SalesOrderLine>();
}
And the code to populate the sales orders in the controller:
public Action Index()
{
MyModel model = new MyModel();
model.SalesOrders.AddRange(CallUspSalesOrder());
foreach (SalesOrder salesOrder in model.SalesOrders)
{
salesOrder.SalesOrderLines.AddRange(CallUspSalesOrderLines(salesOrder.SOKey));
}
return View(model);
}
That way, you have access to all sales orders (and their sales order lines) within the view.
I would say that Nathan's post is a good start. Here is what I would do from beginning to end.
This is how I would do my model:
public class SalesOrderModel
{
public List<SalesOrderLines> SOLines = new List<SalesOrderLines>();
public List<SalesOrder> SOHeader = new List<SalesOrder>();
}
My Controller would then do this:
public ActionResult Index()
{
List<SalesOrder> SalesOrder = callSalesOrderUSP.ToList();
List<SalesOrderLines> SalesOrderLines = new List<SalesOrderLines>();
foreach (var thing in SalesOrder)
{
SalesOrderLines.AddRange(callSalesOrderLinesUSP(thing.SOKey).ToList());
}
SalesOrderModel salesOrderModel = new SalesOrderModel
{
SOHeader = SalesOrder,
SOLines = SalesOrderLines
};
return View(salesOrderModel);
}
Then in your view you can do this:
#foreach(var something in Model.SOHeader)
{
foreach (var thing in Model.SOLines.Where(i => i.SOKey == something.SOKey))
{
//display info here
}
}
You can use ViewBag to pass elements not relevant to your model. Also do not be afraid of creating your own ModelView objects that can work between your View and Controller. Your views should not be restricted to what your model has to offer.
Take a look at this for how you can implement a ViewModel in MVC.
And perhaps look at this to see how you can use ViewBag to pass values to your view, not relevant to your model.
I have a view that loads a record with a certain record number. Once the page is loaded, it gives the user an opportunity to login for additional information. Once the login logic is performed, I need to return to that same view with the same record number intact. I am passing the record number to the action using a hidden input in the form. What I can't seem to figure out is how to return to that same view and provide it with that record #. The code I am trying below is not working. I know this is MVC 101 stuff but a hint in the right direction would be appreciated, or feel free to scrap my method and suggest something better!
Form in view:
<form action="/MyView/Authenticate/#item.ID" method="post" enctype="multipart/form-data">
<input name="form_id" type="hidden" value="#item.ID">
.....
Form action:
[HttpPost]
public ActionResult Authenticate()
{
int myid = Convert.ToInt16(Request["form_id"]);
.....
return View("Index", new { id = myid } );
}
EDIT:
It turns out that the correct view is being returned, but it is expecting a model item type of "JobSummaryModel" per the Index action result below. So the question I actually need answered is, how do I pass both the record id and this view model to it?
public ActionResult Index(int id = 0)
{
List<JobSummaryModel> jdata;
ViewBag.IsResults = false;
if (id != 0)
{
ViewBag.IsResults = true;
}
jdata = db.Jobs.Where(c => c.ID == id).Select(c => new JobSummaryModel() { ID = c.ID, Name = c.Name, City = c.City, PostalCode = c.PostalCode, JobDescription = c.PositionDescription }).ToList();
return View(jdata);
}
EDIT:
Thanks Reddy, your suggestions worked! My only remaining issue is that when I return to my Index view from the Authenticate action, I do not seem to have my "jdata". Is my Index action result not being rerun when I return the Index view via my Authenticate action? I am coming from a web forms background where, in an instance like this, the Load/Init events would automatically run when a form is loaded. Do I need to bind my "jdata" in the Authenticate action and include it in the viewmodel?
EDIT: Resolved. Changed my "return View" to a "return RedirectToAction" to resolve my final issue. Thanks everyone!
Answer For your after Edit:
All you want to pass to view is a int Id and your List<JobSummaryModel> jdata right?
So create a ViewModel JObSummaryModelHelper
Public class JObSummaryModelHelper
{
public int Id {get;set;}
public List<JobSummaryModel> jdata {get;set;}
}
Now in your controller
public ActionResult Index(int id = 0)
{
JObSummaryModelHelper jobDetails = new JObSummaryModelHelper();
jobDetails.Id = id;
ViewBag.IsResults = false;
if (id != 0)
{
ViewBag.IsResults = true;
}
jobDetails .jdata = db.Jobs.Where(c => c.ID == id).Select(c => new JobSummaryModel() { ID = c.ID, Name = c.Name, City = c.City, PostalCode = c.PostalCode, JobDescription = c.PositionDescription }).ToList();
return View(jobDetails );
}
Now make sure your view is set to expect this new viewmodel
#model JObSummaryModelHelper
carry on with your manipulation......
You are better off creating a ViewModel for this like so:
Create a View Model class i.e.
public class AuthViewModel
{
public int MyId { get; set; }
}
In your View put the following directive at the top:
#model AuthViewModel
In your initial [HttpGet] method return the view model:
[HttpGet]
public ActionResult Authenticate()
{
var model = new AuthViewModel { MyId = 123 };
return View("Index", model );
}
It's best to use Html helpers in your view, so you can change it to this:
#using(Html.BeginForm()
{
#Html.HiddenFor(m => m.MyId)
...
}
The above uses naming conventions to post back to the action that you are on.
Then return it to your view like this:
[HttpPost]
public ActionResult Authenticate(AuthViewModel model)
{
int myid = model.MyId;
return View("Index", model );
}
Then you can output using this razor syntax #Model.MyId
It's really worth doing some tutorials to learn the conventions, a small amount of time invested in this will save you a lot of time in the future.
Instead of
return View("Index", new { id = myid } );
could you do
return Index(myid);
HELP:
i would like to add a dropdownlist to my MVC3 application using code first and c#.
i have 2 table Student and University, i need to put a dynamic list of university in a Create view of Student.
how and where should be add methode to my controller.
some one help me please
thanks
I'm guessing you are getting down votes because you could have just googled this and easily found the answer. Anyways, here's a link to get you started.
http://www.mikesdotnetting.com/Article/128/Get-The-Drop-On-ASP.NET-MVC-DropDownLists
The basic idea is you pass the drop down list as a property of the class that send to the view.
So something like this:
public Student
{
public List<University> Universities({//get list from database in getter
Then in the the view use something like
#Html.DropDownListFor(model => model.StudentsSchool, Model.Universities)
First create Entity class for your dropdown. It will return a list of value
public class KeyValueEntity
{
public string Description { get; set; }
public string Value { get; set; }
}
public class MyViewModel
{
public List<KeyValueEntity> Status { get; set; }
}
On your controller write the following code
[HttpGet]
public ActionResult Dropdown()
{
MyViewModel model = GetDefaultModel();
return View(model);
}
}
public MyViewModel GetDefaultModel()
{
var entity = new MyViewModel();
entity.Status = GetMyDropdownValues();
return entity;
}
private List<KeyValueEntity> GetMyDropdownValues()
{
return new List<KeyValueEntity>
{
new KeyValueEntity { Description = "Yes" , Value ="1" },
new KeyValueEntity { Description = "No" , Value ="0"}
};
}
Code for your cshtml page :
Now you need to bind your view with your model for this on top of your view you define your model class
#model MyViewModel
Following is the code for dropdown binding
#Html.LabelForModel("Status:")
#Html.DropDownListFor(m => m.Status, new SelectList(Model.Status, "Value", "Description"), "-- Please Select --")