I am using MySQL .net connector 6.4.4.0 and Entity Frame work 4.1 and trying to create the most basic of code-first implementations.
public class myDB: DbContext
{
public DbSet<Vote> Votes { get; set; }
}
my model
public class Vote
{
public Guid Id { get; set; }
public int Value { get; set; }
}
my home controller
public class HomeController : Controller
{
myDB_db = new myDB();
public ActionResult Index()
{
var model = _db.Votes;
return View(model);
}
}
my strongly typed view (using List scaffold)
@model IEnumerable<Namespace.Models.Vote>
@{
ViewBag.Title = "Index";
}
<h2>Index</h2>
<p>
@Html.ActionLink("Create New", "Create")
</p>
<table>
<tr>
<th>
@Html.DisplayNameFor(model => model.Value)
</th>
<th></th>
</tr>
@foreach (var item in Model) {
<tr>
<td>
@Html.DisplayFor(modelItem => item.Value)
</td>
<td>
@Html.ActionLink("Edit", "Edit", new { id=item.Id }) |
@Html.ActionLink("Details", "Details", new { id=item.Id }) |
@Html.ActionLink("Delete", "Delete", new { id=item.Id })
</td>
</tr>
}
</table>
It creates the table 'votes' in mySQL with all the right properties.
However, it throws at this line:
@foreach (var item in Model)
with the exception:
"Table 'mydb.vote' doesn't exist"
edit: To clarify, I actually want table pluralization, and it seems to properly create the table. I'm hoping to discover the reason for the singular/plural discrepancy. None of the tutorials and videos from microsoft / Plural Sight / scott gu handle using mysql, so i have to imagine that the .netconnector might be the culprit. I would also like to avoid using the [Table("Votes")] attributes. Basically I'm hoping for as much of an 'out of the box' solution as possible.
edit2 (some more relevant code): when i remove this...tables fail to create all together. but the view throws an exception looking for 'votes' not 'vote'. within global.asax
protected void Application_Start()
{
Database.SetInitializer(new DropCreateDatabaseAlways<myDB>());
AreaRegistration.RegisterAllAreas();
RegisterGlobalFilters(GlobalFilters.Filters);
RegisterRoutes(RouteTable.Routes);
}
public class myDBInitializer : DropCreateDatabaseAlways<myDB>
{
protected override void Seed(myDBcontext)
{
base.Seed(context);
}
}
So I gave up on trying to do it the way I felt it should be done and removed pluralization all together. I don't really know for certain, but I assume the problem has to do with the mysql .net connector's support of EF. Here is what I did.
First, there was a bug in my ApplicationStart method:
//WRONG
//Database.SetInitializer(new DropCreateDatabaseAlways<myDB>());
Database.SetInitializer(new myDBInitializer());
Second, I stopped calling the OnModelCreating base implementation which is not listed in the original code since I only implemented it as per jgauffin's suggestion:
protected override void OnModelCreating(DbModelBuilder modelBuilder)
{
//DONT DO THIS ANYMORE
//base.OnModelCreating(modelBuilder);
//modelBuilder.Entity<Vote>().ToTable("Votes")
modelBuilder.Conventions.Remove<PluralizingTableNameConvention>();
}
Third, I read in some posts that the MySQL .net Connector doesn't let EF actually CREATE a database, so I had initially created the blank DB. This seems to no longer be the case with connector 6.4.4+, and as long as your connection string's user has the ability to create new databases, it works better if one is not existing initially.
Once, I did all of the above, it seemed to work. So now I can at least move forward. Hopefully we can figure out the cause of the plural / singular discrepancy in the future.
Thanks to everyone for their time and effort.
In your myDB context class, override the following method
protected override void OnModelCreating(ModelBuilder modelBuilder)
{
modelBuilder.Conventions.Remove<PluralizingTableNameConvention>();
base.OnModelCreating(modelBuilder);
}
to have it not pluralize the generated table names.
Open the DbContext
class related to the tables you want to keep a singular table name.
If you are using EF 6, add a reference to:
using System.Data.Entity.ModelConfiguration.Conventions;
If it is an older version, add a reference to:
using System.Data.Entity.ModelConfiguration.Conventions.Edm.Db;
At last create a method that overrides the OnModelCreating
and remove the convention to pluralize table names:
protected override void OnModelCreating(DbModelBuilder modelBuilder)
{
modelBuilder.Conventions.Remove<PluralizingTableNameConvention>();
}
Remove "Pluralize or singularsize generated object names" check-mark when you create your entity object.
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