I’m trying to put a partial view in a regular view that is not of the same type. I create the partial view from my Assignment model and put it in the /Views/Shared folder. Then I tried to call the partial view in a regular view that was based on another model (InstructorIndexData ) and got the error message:
The model item passed into the dictionary is of type 'SchoolIn.ViewModels.InstructorIndexData', but this dictionary requires a model item of type 'SchoolIn.Models.Assignment'.
Here’s a bit of code from the partial view:
#model ...Models.Assignment
<div class="display-label">Grade</div>
<div class="display-field">
#Html.DisplayFor(model => model.Grade)
</div>
And here’s a bit of code from the regular view:
#model SchoolIn.ViewModels.InstructorIndexData
<td> #Html.Partial("_UpdateAttendance")</td>
How can I put a partial view of one type into a regular view of another type?
Thanks for any help.
If you are rendering the view using the Html.Partial method you could pass the model as second argument:
#Html.Partial("_PartialName", item.Grade)
If you are using display/editor templates, this is done automatically:
#Html.DisplayFor(x => x.Grade)
Now assuming that the Grade property is of type Assignment, then the ~/Views/Shared/DislpayTemplates/Assignment.cshtml will be rendered.
If on the other hand you have a collection property:
public IEnumerable<Assignment> Grades { get; set; }
then you could use:
#model SchoolIn.ViewModels.InstructorIndexData
<table>
<tr>
#Html.DisplayFor(x => x.Grades)
</tr>
</table>
and now the Assignment.cshtml display template will automatically be rendered for each element of the Grades collection so that you don't have to write any ugly loops in your view.
Related
I have a pretty simple scenario, Model for my view is a List.
Loop through List like
#foreach(CustomObject obj in Model)
{
Html.Partial("_TrackingCustomObject",obj)
}
So i was expecting to have number of partial views according to my list.
Partial View has been developed accordingly.
There is no error on page. It just does not show any data that is supposed to display by partial views.
What is the reason of not showing any data?
You are missing an #:
#foreach(CustomObject obj in Model)
{
#Html.Partial("_TrackingCustomObject", obj)
}
But why writing foreach loops when you can use editor/display templates? Like this:
#model IEnumerable<CustomObject>
#Html.EditorForModel()
and then simply define the corresponding editor template (~/Views/Shared/EditorTemplates/CustomObject.cshtml) that will automatically be rendered for each element of your model:
#model CustomObject
<div>
#Html.EditorFor(x => x.Foo)
</div>
Simple and conventional :-)
You're missing the Razor symbol #:
#foreach(CustomObject obj in Model)
{
#Html.Partial("_TrackingCustomObject",obj)
}
Also make sure your partial view is using the object type CustomObject as the Model.
#model MyProject.Models.CustomObject
<h1>Yeah we're in a partial! #Model.SomeProperty </h1>
To try and drill down to where the error is, try placing some static text inside the PartialView.
<p>Some text</p>
If your collection has 10 items, then you should see 10 of these paragraphs. Next once this works, focus on displaying some property in each item.
#model MyProject.Models.CustomObject
<p>Some text</p>
<p>#Model.SomeProperty</p>
When you are creating html form using #Html.BeginForm() you have to wrap the remaining stuf inside a <div> or other container else the html elements won't get rendered.
Ex.
this won't work
#using(Html.BeginForm())
{
Html.EditorFor(m => m.Name)
}
this will work
#using(Html.BeginForm())
{
<div>
#Html.EditorFor(m => m.Name)
</div>
}
Bit late in the day, but this worked for me in MVC 4:
#foreach (var p in #Model.RelatedCards)
{
Html.RenderPartial("_ThumbPartial", p);
}
Try this:
#Html.RenderPartial("_TrackingCustomObject",obj)
This is too old but someone can use it.
#foreach(CustomObject obj in Model)
{
<text>
Html.Partial("_TrackingCustomObject",obj)
</text>
}
I have the following code in a partial view:
#model MyOrganization.MyApp.Models.ProductListing
#using (Ajax.BeginForm("TagProduct", new AjaxOptions() { UpdateTargetId = "FormContainer" , OnSuccess = "$.validator.unobtrusive.parse('form');" }))
{
<p>
#Html.LabelFor(m => m.ModelNumber):
#Html.EditorFor(m => m.ModelNumber)
Tag Product with This Model Number
#(Html.ValidationMessageFor(m => m.ModelNumber))
</p>
}
The viewmodel that this partial view gets is instantiated and many of its properties are hydrated by the view that contains this partial view. However, when the submit is called here, the viewmodel that the controller gets has only the ModelNumber property hydrated. All the other properties are null as if a new instance is created by the partial view with only the property that was edited (ModelNumber) getting a value.
I know that the viewmodel instance passed to the partial view has all the other property values, because if I add an #Html.EditorFor(m => m.SerialNumber) I can see the SerialNumber value that the containing view had rendered in the browser's textbox and I also get it back in the controller when the form is submitted. However, I don't want an editor for the SerialNumber property on the form - I just want it back in the controller when it is submitted.
How can I can I get the entire model back to the controller as it was passed in to the partial view with only the changes that the partial view made?
When it posts the form, it DOES create a new copy of the model with whatever values you posted to it. If you need the other values, put #Html.HiddenFor the other elements you need posted.
Im creating an application that allows me to record recipes. Im trying to create a view that allows me to add the basics of a recipe e.g. recipe name,date of recipe, temp cooked at & ingredients used.
I am creating a view that contains some jquery to load a partial view clientside.
On post im having a few troubles trying to get the values from the partial view that has been loaded using jquery.
A cut down version of my main view looks like (I initially want 1 partial view loaded)
<div id="ingredients">
#{ Html.RenderPartial("_AddIngredient", new IngredientViewModel()); }
</div>
<script type="text/javascript">
$(document).ready(function () {
var dest = $("#ingredients");
$("#add-ingredient").click(function () {
loadPartial();
});
function loadPartial() {
$.get("/Recipe/AddIngredient", {}, function (data) { $('#ingredients').append(data); }, "html");
};
});
</script>
My partial view looks like
<div class="ingredient-name">
#Html.LabelFor(x => Model.IngredientModel.IngredientName)
#Html.TextBoxFor(x => Model.IngredientModel.IngredientName)
</div>
<div class="ingredient-measurementamount">
#Html.LabelFor(x => Model.MeasurementAmount)
#Html.TextBoxFor(x => Model.MeasurementAmount)
</div>
<div class="ingredient-measurementtype">
#Html.LabelFor(x => Model.MeasurementType)
#Html.TextBoxFor(x => Model.MeasurementType)
</div>
Controller Post
[HttpPost]
public ActionResult Create(RecipeViewModel vm,IEnumerable<string>IngredientName, IEnumerable<string> MeasurementAmount, IEnumerable<string> MeasurementType)
{
Finally my viewmodel looks like
public class IngredientViewModel
{
public RecipeModel RecipeModel { get; set; }
public IEnumerable<IngredientModel> Ingredients { get; set; }
}
My controller is pretty ugly......im using Inumerble to get the values for MeasurementAmount & MeasurementType (IngredientName always returns null), Ideally I thought on the httppost Ingredients would be populated with all of the on I would be able Ingredients populated
What do I need to do to get the values from my partial view into my controller?
Why don't you take a look at the MVC Controlstoolkit
I think they would do what you want.
Without getting in too much detail. Can you change the public ActionResult Create to use FormCollection instead of a view model? This will allow you to see what data is coming through if any. It would help if you could post it then.
Your view model gets populated by using Binding - if you haven't read about it, it might be a good idea to do that. Finally I would consider wrapping your lists or enums into a single view model.
Possible Problem
The problem could lay with the fact that the new Partial you just rendered isn't correctly binded with your ViewModel that you post later on.
If you inspect the elements with firebug then the elements in the Partial should be named/Id'ed something like this: Ingredients[x].Property1,Ingredients[x].Property2 etc.
In your situation when you add a partial they are probably just called Property1,Property2.
Possible Solution
Give your properties in your partial the correct name that corresponds with your List of Ingredients. Something like this:
#Html.TextBox("Ingredients[x].Property1","")
Of, after rendering your partial just change all the names en ID's with jquery to the correct value.
It happens because fields' names from partial view do not fit in default ModelBinder convention. You should analyze what names fields have in your partial view.
Also you should implement correct way of binding collections to MVC controller. You could find example in Phil's Haack post
Assuming RecipeViewModel is the model being supplied to the partial view, try just accepting that back in your POST controller like this:
[HttpPost]
public ActionResult Create(RecipeViewModel vm)
{
//
}
You should get the model populated with all the values supplied in the form.
new to mvc3, i have a few questions, would appreciate if someone could answer/provide links:
When should I use View Models? Is it not recommended to use the domain? I find that my view models are copies of my domain objects, and don't see the value...
When should I use Partials? Is it only if the partial view will be reused?
When should I use Display Templates and Editor Templates? Can I use these without a view model?
How do I create an edit screen where the parent and list of child objects are both editable? i.e. a few fields at the top (parent) and a grid of fields below (like editable rows), particularly, how do i do the binding? automapper is not used.
Thanks!
When should I use View Models? Is it not recommended to use the domain? I find that my view models are copies of my domain objects, and don't see the value...
View models should always be used. You should not use your domain models in the view.
View models are not exact copies of the domain models. They always have some differences related to the specific requirements of the view. For example on one screen you would like to present some of the properties of your domain model and on other screen other properties. As a consequence to this you will also have different validation requirements as one property will be required on one screen and not required on other screen. So you will also have different data annotations on those view models.
When should I use Partials? Is it only if the partial view will be reused?
Not only if the view will be reused. Partials could be used to make your views more structured. Also if you are using AJAX, partials make it easier. You would send the AJAX request to a controller action which will return a partial view allowing you to update only portions of the DOM.
When should I use Display Templates and Editor Templates? Can I use these without a view model?
Always. You can use them with any strongly typed model, but you should always use a view models (see answer to previous question).
How do I create an edit screen where the parent and list of child objects are both editable? i.e. a few fields at the top (parent) and a grid of fields below (like editable rows), particularly, how do i do the binding? automapper is not used.
That's a pretty broad question but to answer it as always you start with defining your view models which will represent/contain the properties you would like to present on this screen for editing:
public class ChildViewModel
{
[Required]
public string Name { get; set; }
}
public class ParentViewModel
{
[Required]
public string Name { get; set; }
public IEnumerable<ChildViewModel> Children { get; set; }
}
then a controller:
public class HomeController: Controller
{
public ActionResult Index()
{
// TODO: Fetch an actual domain model from your repository,
// and map it to the view model (AutoMapper is a great tool for the job)
var model = new ParentViewModel
{
Name = "parent name",
Children = Enumerable.Range(1, 5).Select(x => new ChildViewModel
{
Name = "child " + x
})
};
return View(model);
}
[HttpPost]
public ActionResult Index(ParentViewModel model)
{
if (!ModelState.IsValid)
{
return View(model);
}
// TODO: the model object here will contain the new values
// => user AutoMapper to map it back to a domain model
// and pass this domain model to the repository for processing
return RedirectToAction("Index");
}
}
and finally the view:
#model ParentViewModel
#using (Html.BeginForm())
{
<h2>Parent</h2>
<div>
#Html.LabelFor(x => x.Name)
#Html.EditorFor(x => x.Name)
#Html.ValidationMessageFor(x => x.Name)
</div>
<h2>Children</h2>
<table>
<thead>
<tr>
<th>Child name</th>
</tr>
</thead>
<tbody>
#Html.EditorFor(x => x.Children)
</tbody>
</table>
<input type="submit" value="OK" />
}
and the last piece is the editor template for a child (~/Views/Home/EditorTemplates/ChildViewModel.cshtml):
#model ChildViewModel
<tr>
<td>
#Html.LabelFor(x => x.Name)
#Html.EditorFor(x => x.Name)
#Html.ValidationMessageFor(x => x.Name)
</td>
</tr>
I feel stupid asking this but I cant seem to get a partial view rendering in a page.
I have created a partial view that im trying to load into my index page. I have called my pv _BusinessDetails basically its a view that returns some customer data.
My pv looks like
#model MyMVC.Models.BusinessModel
<div class="grid">
<div class="grid-header">
<div class="gh-l"></div>
<div class="gh-m">Business Details</div>
<div class="gh-r"></div>
</div>
<div class="grid-row">
<label class="labelBold">Busines Name</label>
<label>#Model.BusinesName</label>
</div>
</div>
From my index page I am trying to call the pv using
#Html.Partial("_BusinessDetails")
which fails so if I add
#Html.Partial("_BusinessDetails",new MyMVC.Models.BusinessModel())
The partial view is loaded however with no data as the controller isn't been hit. In my controller I have tried
public ActionResult _BusinessDetails()
{
return PartialView("_BusinessDetails");
}
public PartialViewResult _BusinessDetails()
{
return PartialView("_BusinessDetails");
}
However neither of them are hit. What have I done wrong?
When rendering a partial view and passing a view model, that view model should already be populated. No controllers/action methods are invoked when using #Html.Partial().
Since you are using this strongly-typed partial view on your home page, consider building its view model in your HomeController's Index() method. Is your index page strongly-typed as well? If so, you can add your partial view's view model as a property of your index page's view model, and pass that when calling #Html.Partial().
On your index page, it would look something like:
#model MyMVC.Models.IndexViewModel
<!-- some HTML here -->
#Html.RenderPartial("_BusinessDetails", Model.BusinessModel)
If your index page is not strongly-typed, you can use the ViewBag object or you can strongly-type it to MyMVC.Models.BusinessModel and use #Html.RenderPartial("_BusinessDetails", Model) (which, while simple, could cause confusion).
Rachel Appel has a nice blog post, as does Mike Brind, if you would like more information.
It's tricky. I've had success with using a model on the main view as a container object:
class MainPageModel {
public BusinessDetailModel BusinessDetails { get; set; }
// ...
}
and then just passing the whole model like #Html.Partial("_BusinessDetails", Model) to my partial views.
When you wrote this,
#Html.Partial("_BusinessDetails",new MyMVC.Models.BusinessModel())
The data is not loaded as your model is empty, so before passing model BusinessModel,fill it before.