Adding roles in the create user view ASP Identity MVC

Question

I´m writing a project to manage a pool of users of asp.net identity 2.0, and i want to create a user and add roles to the user in the same view, so when i post the model just simple create the user and add the roles in the same action. I don't know how to generate the roles list for the user, for example i have a dropdownlist for with the roles and id´s and my view is something like this



    
        Datos personales
        
            
                
                    @Html.DisplayNameFor(m => m.User.Nombre)
                
                
                    @Html.TextBoxFor(m => m.User.Nombre, new { @class = "form-control" })
                
            
            
                
                    @Html.DisplayNameFor(m => m.User.Apellido)
                
                
                    @Html.TextBoxFor(m => m.User.Apellido, new { @class = "form-control" })
                
            
            
                
                    @Html.DisplayNameFor(m => m.User.DependenciaId)
                
                
                    @Html.DropDownListFor(m => m.User.DependenciaId, new SelectList(ViewBag.ListaDependencia, "Id", "Descripcion"), "Ninguno", new { @class = "form-control" })
                
            
        
    


    
        Datos usuario
        
            
                
                    @Html.DisplayNameFor(m => m.User.UserName)
                
                
                    @Html.TextBoxFor(m => m.User.UserName, new { @class = "form-control" })
                
            
            
                
                    @Html.DisplayNameFor(m => m.User.NetUser)
                
                
                    @Html.TextBoxFor(m => m.User.NetUser, new { @class = "form-control" })
                
            
        
    


    Datos usuario
    
        
            
                @Html.DisplayNameFor(m => m.User.Roles)
            
            
                @Html.DropDownListFor(m => m.User.Roles, new SelectList(ViewBag.RolesList, "Id", "Name"), "Ninguno", new { @class = "form-control" })
            
        
        
            Here must present the roles to add to the user

zeuz1983 · Accepted Answer

I found a way

first a helper for offline collections, that a i found on internet

public static class HtmlPrefixScopeExtensions
{
    private const string idsToReuseKey = "__htmlPrefixScopeExtensions_IdsToReuse_";

    public static IDisposable BeginCollectionItem(this HtmlHelper html, string collectionName)
    {
        if (html.ViewData["ContainerPrefix"] != null)
        {
            collectionName = string.Concat(html.ViewData["ContainerPrefix"], ".", collectionName);
        }

        var idsToReuse = GetIdsToReuse(html.ViewContext.HttpContext, collectionName);
        var itemIndex = idsToReuse.Count > 0 ? idsToReuse.Dequeue() : Guid.NewGuid().ToString();

        var htmlFieldPrefix = string.Format("{0}[{1}]", collectionName, itemIndex);

        html.ViewData["ContainerPrefix"] = htmlFieldPrefix;

        // autocomplete="off" is needed to work around a very annoying Chrome behaviour whereby it reuses old values after the user clicks "Back", which causes the xyz.index and xyz[...] values to get out of sync.
        html.ViewContext.Writer.WriteLine("", collectionName, html.Encode(itemIndex));

        return BeginHtmlFieldPrefixScope(html, htmlFieldPrefix);
    }

    public static IDisposable BeginHtmlFieldPrefixScope(this HtmlHelper html, string htmlFieldPrefix)
    {
        return new HtmlFieldPrefixScope(html.ViewData.TemplateInfo, htmlFieldPrefix);
    }

    private static Queue GetIdsToReuse(HttpContextBase httpContext, string collectionName)
    {
        // We need to use the same sequence of IDs following a server-side validation failure,  
        // otherwise the framework won't render the validation error messages next to each item.
        var key = idsToReuseKey + collectionName;
        var queue = (Queue)httpContext.Items[key];
        if (queue == null)
        {
            httpContext.Items[key] = queue = new Queue();
            var previouslyUsedIds = httpContext.Request[collectionName + ".index"];
            if (!string.IsNullOrEmpty(previouslyUsedIds))
                foreach (var previouslyUsedId in previouslyUsedIds.Split(','))
                    queue.Enqueue(previouslyUsedId);
        }
        return queue;
    }

    private class HtmlFieldPrefixScope : IDisposable
    {
        private readonly TemplateInfo templateInfo;
        private readonly string previousHtmlFieldPrefix;

        public HtmlFieldPrefixScope(TemplateInfo templateInfo, string htmlFieldPrefix)
        {
            this.templateInfo = templateInfo;

            previousHtmlFieldPrefix = templateInfo.HtmlFieldPrefix;
            templateInfo.HtmlFieldPrefix = htmlFieldPrefix;
        }

        public void Dispose()
        {
            templateInfo.HtmlFieldPrefix = previousHtmlFieldPrefix;
        }
    }

then using an editor template


@using (Html.BeginCollectionItem("ListaObraSocialPrepagasSeleccionadas"))
{
    
        
        @Html.HiddenFor(model => model.Id, new { @readonly = "readonly" })
    
    
        @Html.HiddenFor(model => model.Id, new { @readonly = "readonly" })
        @Html.DisplayTextFor(model => model.Name)
    
}

a partial view to manage the list

    


    


        @Html.EditorFor(m => m.Roles)
        
        
            
                
                Rol

and finnaly the dropdown and the table


                Roles
                
                    @Html.DropDownList("ddRoles", new SelectList(ViewBag.Roleslist, "Id", "Name", null), "Seleccione un rol", new { @class = "selectpicker", data_live_search = "true" })
                
                
                    
                    
                
            
            
                @Html.Partial("_Roles")

Adding roles in the create user view ASP Identity MVC

Answers (1)

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