in my MVC web apps, this is the models which uses icollection object,
public class EmpProfile
{
public int EmpProfileID { get; set; }
public string EmpName { get; set; }
public string EmpNum { get; set; }
public string ManagerEditor { get; set; }
public string DocCreatedBy { get; set; }
public virtual ICollection<PerfPlan> PerfPlans { get; set; }
public virtual ICollection<ProgReview> ProgReviews { get; set; }
}
and this is PerfPlan model, the other model ProgReviews is similar like this one.
public class PerfPlan
{
public int ID { get; set; }
public int EmpProfileID { get; set; }
public string EmpName { get; set; }
public string EmpNum { get; set; }
public string Title { get; set; }
....
public virtual EmpProfile EmpProfile { get; set; }
}
Basically, it builds one to many relationship between EmpProfile and PerfPlan, ProgReview. So one EmpProfile has 0 or many Performance plan and Progress Review data (model).Now, in my Index razor of EmpProfile, I want to list all PerfPlan and ProgReview which related to each EmpProfile, I build something like this:
#model IEnumerable<PerfM.Models.EmpProfile>
<table>
#foreach (var item in Model)
{
<tr class="#selectedRow">
<td >
#Html.ActionLink(#item.EmpName, "Index", new { id = item.EmpProfileID })
</td>
</tr>
//here I need to list all PerfPlan and ProgReview related to this EmpProfile and list under this row.
Can any expert help me to continue the codes below?
Thanks a lot,
Just use simple foreach loops like this (inside of your foreach loop) :
foreach(var plan in item.PerfPlans)
{
// here you can access your PerfPlan properties like:
<tr>
<td> #plan.Id </td>
<td> #plan.EmpName</td>
<td> #plan.EmpNum </td>
...
</tr>
}
foreach(var review in item.ProgReviews)
{
...
}
And in your Controller don't forget to include your collections:
var profiles = context.EmpProfiles.Include("PerfPlans").Include("ProgReviews");
Related
E-commerce website on ASP.NET Core 3.0
There are two model classes:
Products
Images
The multiple images of a single Product are stored in Images table. I am trying to create an All Products Page, but I am struggling with the logic of matching Image with Product Code and pass it to View which displays all the Products in shop along with thumbnail image from Images.cs and Product Title and its price from Product.cs table. How will I match data from two Model classes and make sure all the matching images and products are displayed relevantly.
Image.cs
public class Image
{
[Key]
[DatabaseGenerated(DatabaseGeneratedOption.Identity)]
public int ImageID { get; set; }
public string ProductCode { get; set; }
public virtual Product Product { get; set; }
public byte[] Pic { get; set; }
public string FileName { get; set; }
public string ContentType { get; set; }
}
Product.cs
public class Product
{
public Product()
{
ICollection<Category> Categories = new HashSet<Category>();
ICollection<Image> Images = new HashSet<Image>();
}
[Key]
[DatabaseGenerated(DatabaseGeneratedOption.Identity)]
public int ProductID{ get; set; }
[Required, StringLength(150)]
public string ProductCode{ get; set; }
[Required, StringLength(150)]
public string Title { get; set; }
[StringLength(500)]
public string Description { get; set; }
public int Price { get; set; }
[StringLength(150)]
public string Type { get; set; }
[ForeignKey("Category")]
[Required]
public int CategoryId { get; set; }
public virtual Category Category { get; set; }
public virtual ICollection<Category> Categories { get; set; }
public virtual ICollection<Image> Images { get; set; }
}
Want to create something like this:
Something like this?
If you have relationships between products and images in database,
var list = _context.Product.Include(x => x.Image).ToList();
If you don't have relationship,
var imageslist = _context.Image;
var list = _context.Product.Select(x => new Product()
{
ProductId = x.ProductId,
Title = x.Title,
Price = x.Price,
Description = x.Description,
Images = imageslist.Where(y => y.ProductCode == x.ProductCode).ToList()
}).ToList();
then pass list to view and use #model List< Products > in your view to display all products.
EDITED 2
Your view page
#model IEnumerable<Product>
#{
foreach (var item in Model)
{
var base64image = Convert.ToBase64String(item.Images.FirstOrDefault().Pic);
<div class="col-xs-6 col-sm-4 col-md-3 col-lg-3">
<table>
<tr>
<td>
<img src="data:image/png;base64,#base64image" height="100">
</td>
</tr>
<tr>
<td>#item.Title</td>
</tr>
<tr>
<td>#item.Price</td>
</tr>
</table>
</div>
}
}
My model is
public partial class Device
{
[DisplayFormat(ConvertEmptyStringToNull = false)]
public string Device_Id { get; set; }
[DisplayFormat(ConvertEmptyStringToNull = false)]
public string Device_Name { get; set; }
}
public partial class Customer
{
[DisplayFormat(ConvertEmptyStringToNull = false)]
public string Customer_id { get; set; }
[DisplayFormat(ConvertEmptyStringToNull = false)]
public string Customer_Name { get; set; }
}
I want to display the values in both tables in one view i am using stored procedure to get the values..
I have written procedure to get the details from the 2 tables..I need the view to be like this.
<table >
<tr>
<th>Device </th>
<th>Customer Name</th>
</tr>
#foreach (var item in Model)
{
<tr>
<td>#Html.LabelForModel(item.Device_ModelNo)</td>
<td>#Html.LabelForModel(item.Customer_Name)</td>
</tr>
}
</table>
Create a Master class and include this two classes like this
public class Master
{
public Device device { get; set; }
public Customer customer { get; set; }
}
Now type your view with the master class
#model MasterModel
I have 2 tables Work_table and Employee_table.I want to display emp_id from Work_table and corresponding emp_name from Employee_table in the index view of Employee_table.
my models are:
namespace MvcConQuery.Models
{
[Table("Work_Table")]
public class EnquiryModel
{
[Key]
[DatabaseGeneratedAttribute(DatabaseGeneratedOption.Identity)]
public Int32 Enq_id { get; set; }
[Required]
[Display(Name="Name")]
public string CustomerName { get; set; }
[ReadOnly(true)]
public string Date
{
get
{
DateTime Date = DateTime.Now;
return Date.ToString("yyyy-MM-dd"); ;
}
set{}
}
[Required]
[Display(Name = "Region")]
public string Region { get; set; }
[Required]
[RegularExpression(#"^\(?([0-9]{3})\)?[-. ]?([0-9]{3})[-. ]?([0-9]{4})$", ErrorMessage = "Entered phone number format is not valid.")]
[Display(Name = "Phone number")]
public string Ph_No { get; set; }
[Required]
[DataType(DataType.EmailAddress)]
[Display(Name = "Email_id")]
public string Email_id { get; set; }
[Required]
[Display(Name = "Address")]
public string Address { get; set; }
[Required]
[Display(Name = "Query")]
public string Query { get; set; }
public string Referral { get; set; }
public string Feedback { get; set; }
public string Status { get; set; }
public Int32? Emp_id { get; set; }
public string FollowUpDate { get; set; }
public List<EmployeeModel> Employees { get; set; }
}}
namespace MvcConQuery.Models
{
[Table("Employee_Table")]
public class EmployeeModel
{
[Key,Column(Order=0)]
[DatabaseGeneratedAttribute(DatabaseGeneratedOption.Identity)]
//[ForeignKey("EnquiryModel")]
public Int32 Emp_id { get; set; }
public string Emp_Name{ get; set; }
//[Key,Column(Order=1)]
public string Region { get; set; }
//[ForeignKey("Region")]
public string Emp_PhNo { get; set; }
public string Emp_Address { get; set; }
public List<EnquiryModel> Enquires { get; set; }
}
}
How to write controller?
I stucked when writing the function in controller.
public ActionResult Index()
{
}
Please suggest a solution. thanks in advance.
Regards
I was wrong earlier, I made out from your code that there is a many -to- many relationship between Employee and Work tables. For my convenience, I have used Job as the name for your Work table / model.
I hope that you want to display a list of EmployeeIds along with the corresponding EmployeeNames in the Index View. I have added an extra property called JobName to viewmodel, you can have other properties too.
For that matter, create a ViewModel EmployeeViewModel and bind the index view of your action result with an IEnumerable<EmployeeViewModel>. The definition for EmployeeViewModel can be something like -
public class EmployeeViewModel
{
public int EmployeeId { get; set; }
public string EmployeeName { get; set; }
public string JobName { get; set; }
//..Other memberVariables..
}
Suppose these are your models -
Employee
public class Employee
{
[Key]
[DatabaseGenerated(DatabaseGeneratedOption.Identity)]
public int EmployeeId { get; set; }
public string EmployeeName { get; set; }
public string Address { get; set; }
public virtual ICollection<Job> Jobs { get; set; }
}
And WorkTable, renamed it as Job for my own convenience
public class Job
{
[Key]
[DatabaseGenerated(DatabaseGeneratedOption.Identity)]
public int JobId { get; set; }
public string JobName { get; set; }
public JobCategory JobCategory { get; set; }
public int EmployeeId { get; set; }
public virtual ICollection<Employee> Employees { get; set; }
}
In your Index Action, you create a result set by joining the two tables, bind it to IEnumerable<EmployeeViewModel> and pass that as a model to the view. The View should receive a model of type IEnumerable<EmployeeViewModel> as I mentioned earlier,so you need to query your entities which should be something like -
public ActionResult Index()
{
//..something like this..this is IQueryable..
//...convert this to IEnumerable and send this as the model to ..
//..the Index View as shown below..here you are querying your own tables,
//.. Employee and Job,and binding the result to the EmployeeViewModel which
//.. is passed on to the Index view.
IEnumerable<EmployeeViewModel> model=null;
model = (from e in db.Employees
join j in db.Jobs on e.EmployeeId equals j.EmployeeId
select new EmployeeViewModel
{
EmployeeId = e.EmployeeId,
EmployeeName = e.EmployeeName,
JobName = j.JobName
});
return View(model);
}
Your index view should be something like -
#model IEnumerable<MyApp.Models.EmployeeViewModel>
#{
ViewBag.Title = "Index";
}
<table>
<tr>
<th>
#Html.DisplayNameFor(model => model.EmployeeId)
</th>
<th>
#Html.DisplayNameFor(model => model.EmployeeName)
</th>
<th>
#Html.DisplayNameFor(model => model.JobName)
</th>
<th></th>
</tr>
#foreach (var item in Model) {
<tr>
<td>
#Html.DisplayFor(modelItem => item.EmployeeId)
</td>
<td>
#Html.DisplayFor(modelItem => item.EmployeeName)
</td>
<td>
#Html.DisplayFor(modelItem => item.JobName)
</td>
</tr>
}
</table>
In this above solution, I have made an attempt to generate a situation similar to yours and address your concerns. I hope this brings some sort of respite to your worries and helps you move ahead. Take this as a map and try follow the routes to find your own destination/solution. Btw, sorry for this delayed reply. Hope this helps.
This code has something missing select new EmployeeviewModel
model = (from e in db.Employees
join j in db.Jobs on e.EmployeeId equals j.EmployeeId
select new EmployeeViewModel
{
EmployeeId = e.EmployeeId,
EmployeeName = e.EmployeeName,
JobName = j.JobName
});
Here is my BlogPost Model class:
public class BlogPost
{
public int Id { get; set; }
public string Title { get; set; }
[AllowHtml]
public string ShortDescription { get; set; }
[AllowHtml]
public string PostBody { get; set; }
public string Meta { get; set; }
public string UrlSlug { get; set; }
public DateTime PostedOn { get; set; }
public DateTime? Modified { get; set; }
public virtual ICollection<BlogPostCategory> Categories { get; set; }
public virtual ICollection<BlogPostTag> Tags { get; set; }
}
Here is my BlogPostCategory Model class:
public class BlogPostCategory
{
public int Id { get; set; }
public string Name { get; set; }
public string UrlSlug { get; set; }
public string Description { get; set; }
// Decared virtual because the data must be returned from another table.
public virtual ICollection<BlogPost> BlogPosts { get; set; }
}
Each class belongs to a separate Controller/View.
Finally, here is the top port of the Index View for Blog:
#model IEnumerable<MyBlogSite.Models.BlogPost>
#{
ViewBag.Title = "Index";
}
#Html.RenderPartial("~/Views/Category/_Categories.cshtml", Model.Categories );
<p>
#Html.ActionLink("New Blog Post", "Create")
</p>
<table>
<tr>
<th>
#Html.DisplayNameFor(model => model.Title)
</th>
....
In the View where Model.Categories is being passed in is where I am getting the exception from the title of this post. It seems to me that I have defined Categories within the BlogPost Model. What am I doing wrong?
The Model on your Razor page is an IEnumerable<MyBlogSite.Models.BlogPost>. It seems you're trying to display the information about each of the items in your collection. If so, then you can loop through them or create a display/editor template and use #Html.DisplayFor(x => x) or #Html.EditorFor(x => x), respectively.
#foreach(var post in Model) {
<p>Do stuff here with the local "post" variable.</p>
}
Here's a link to Scott Gu's blog talking about the #model directive in Razor views.
I'm trying to build an asp.net mvc 4 application that makes use of partial views and display/editortemplates and Kendo ui.
I have a viewmodel for a specific page:
public class Plant {
public Guid PlantId{ get; set; }
public string Name { get; set; }
public string Description { get; set; }
public ICollection<Leaf> Leafs{ get; set; }
public ICollection<Flower> Flowers{ get; set; }
public ICollection<Bug> Bugs{ get; set; }
}
And as well Leaf, Flower as Bug have their own properties.
By example:
public class Leaf {
public Guid LeafId{ get; set; }
public string Name { get; set; }
public string Documentation { get; set; }
public string Description { get; set; }
}
I'm making use of partialviews in my view so it makes it more easy to update them with ajax.
My normal view : PlantDetail.cshtml
#model Plant
<table>
<tr>
<td>
<h2>#Html.Label(Resources.PlantDetailTitle)</h2>
</td>
<td>
#Html.HiddenFor(m => m.PlantId)
#Html.DisplayFor(m => m.Name)
</td>
</tr>
<tr>
<td>#Html.LabelFor(m => m.Description)
</td>
<td>
#Html.DisplayFor(m => m.Description)
</td>
</tr>
</table>
#{Html.RenderPartial("_flowers", Model);}
#{Html.RenderPartial("_leafs", Model);}
In my partial view "_leafs" (as well as in "_flowers" I have a serie of buttons that invoke an action that needs the LeafId and the PlantId:
The partial view "_leafs":
#model List<Leaf>
#for (int i = 0; i < Model.Count(); i++ )
{
#(Html.DisplayFor(m => m[i]))
}
My displayTemplate "Leaf.cshtml":
#model Leaf
#Html.HiddenFor(m =>m.LeafId)
<a class='k-button k-button-icontext' href=#Url.Action("InitiateLeaf", "Plant") +"?
leafId=#Model.LeafId&plantId=#=PlantId#">#Model.Name</a>
Now my problem is that I can't seem to access the PlantId of my Parent Viewmodel in my displaytemplate. (And I have the same problem in each of my displaytemplates..)
I've allready tried it with routevalues in my url.action and I know that I can eventually access the PlantId in javascript, but is there any (mvc) way to keep using displaytemplates and don't duplicate my plantId as a property of my child Leaf viewmodel?
I've allready tried to acces my parentviewcontext with something like
"#HttpContext.Current.Request.RequestContext.RouteData.Values["controller"].ToString()" in my displaytemplate, but don't seem the find the value of my PlantId (if it is even stored there..).
Anyone else still has some suggestions?
One option as you mentioned, is to use jquery to access the parent PlantId. If you have a requirement to access your parent's properties, its better to design your view models similar to how Entity framework recommends us to create model classes.
public class Plant {
public Guid PlantId{ get; set; }
public string Name { get; set; }
public string Description { get; set; }
public ICollection<Leaf> Leafs{ get; set; }
public ICollection<Flower> Flowers{ get; set; }
public ICollection<Bug> Bugs{ get; set; }
}
So your Leaf class should also have a navigational property to go back to Plant.
public class Leaf {
public Guid LeafId{ get; set; }
public string Name { get; set; }
public string Documentation { get; set; }
public string Description { get; set; }
public virtual Plant Plant { get; set; }
public Guid PlantId { get; set; }
}
Make sure you populate the Plant property and PlantId when you create the ViewModel. Hope this helps