xVal - Generates Rules Only For The ID Field
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13-09-2019 - |
Question
I am following this post.
Server side validations work as expected. But the clientside validators are only getting generated for the ID field.
My Linq2Sql Entity Class has two properties ID & CategoryName and below is my Metadata class
[MetadataType(typeof(BookCategoryMetadata))]
public partial class BookCategory{}
public class BookCategoryMetadata
{
[Required]
[StringLength(50)]
public string CategoryName { get; set; }
}
Method to add a category
/// <summary>
/// Adds the category.
/// </summary>
/// <param name="category">The category.</param>
public void AddCategory(BookCategory category)
{
var errors = DataAnotationsValidationHelper.GetErrors(category);
if (errors.Any()) {
throw new RulesException(errors);
}
_db.BookCategories.InsertOnSubmit(category);
_db.SubmitChanges();
}
Create action in the controller
[AcceptVerbs(HttpVerbs.Post)]
public ActionResult Create([Bind(Exclude = "ID")]BookCategory category)
{
try {
_repository.AddCategory(category);
} catch (RulesException ex) {
ex.AddModelStateErrors(ModelState, "");
}
return ModelState.IsValid ? RedirectToAction("Index") : (ActionResult)View();
}
And the view
<asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server">
<h2>Create</h2>
<%= Html.ValidationSummary("Create was unsuccessful. Please correct the errors and try again.") %>
<% using (Html.BeginForm()) {%>
<fieldset>
<legend>Fields</legend>
<p>
<label for="CategoryName">CategoryName:</label>
<%= Html.TextBox("CategoryName") %>
<%= Html.ValidationMessage("CategoryName", "*") %>
</p>
<p>
<input type="submit" value="Create" />
</p>
</fieldset>
<% } %>
<div>
<%=Html.ActionLink("Back to List", "Index") %>
</div>
<%= Html.ClientSideValidation<BookCategory>() %>
Now xVal only generates validation rules for the ID field.
<script type="text/javascript">xVal.AttachValidator(null, {"Fields":[{"FieldName":"ID","FieldRules":[{"RuleName":"DataType","RuleParameters":{"Type":"Integer"}}]}]})</script>
The server side validation for CategoryName works perfect. Why xVal is not generating validation rules for the CategoryName? What am I doing wrong?
Solution
Supposedly, xVal 0.8 has buddy classes working. You can read this post here:
[http://xval.codeplex.com/Thread/View.aspx?ThreadId=54300][1]
If that doesn't fix your problem, try pulling down the latest code for xVal and modifying xVal.RuleProviders.PropertyAttributeRuleProviderBase::GetRulesFromTypeCore
to be
protected override RuleSet GetRulesFromTypeCore(Type type)
{
var typeDescriptor = metadataProviderFactory(type).GetTypeDescriptor(type);
var rules = (from prop in typeDescriptor.GetProperties().Cast<PropertyDescriptor>()
from rule in GetRulesFromProperty(prop)
select new KeyValuePair<string, Rule>(prop.Name, rule));
var metadataAttrib = type.GetCustomAttributes(typeof(MetadataTypeAttribute), true).OfType<MetadataTypeAttribute>().FirstOrDefault();
var buddyClassOrModelClass = metadataAttrib != null ? metadataAttrib.MetadataClassType : type;
var buddyClassProperties = TypeDescriptor.GetProperties(buddyClassOrModelClass).Cast<PropertyDescriptor>();
var modelClassProperties = TypeDescriptor.GetProperties(type).Cast<PropertyDescriptor>();
var buddyRules = from buddyProp in buddyClassProperties
join modelProp in modelClassProperties on buddyProp.Name equals modelProp.Name
from rule in GetRulesFromProperty(buddyProp)
select new KeyValuePair<string, Rule>(buddyProp.Name, rule);
rules = rules.Union(buddyRules);
return new RuleSet(rules.ToLookup(x => x.Key, x => x.Value));
}
Also, if this fixes your problem, you might want to contact Steve Sanderson and let him know this bug is still present.