Apply Permission On Buttons

Question

Hi,
i used permission based in my project
in the index page , i show list of books with buttons (edit,delete,details)

but how to apply permissions on these button ,that's means
when a user don't have delete permission then in the index page don't show delete button

i use this way to apply permission for buttons

 <tbody>  
            @foreach (var item in Model)  
            {  
            <tr >  
             
                <td>  
                    @Html.DisplayFor(modelItem => item.Title)  
                </td>  
               
                <td>  
                    if(@_userService.UserHasPermission("Update"))  
                    {  
                    <a href="/Books/Edit/@item.Id"></a>  
                    }  
                    
                </td>  
            </tr>  
  
            }  
        </tbody>  

but the UserHasPermission call every time because it's call in foreach(execute query every time )

It is not interesting and optimal

is there any way to apply permission on buttons ?

Answer 1

A standard optimization is to extract calculation of constants out of the loop

             @var updatePermission = _userService.UserHasPermission("Update"));
             foreach (var item in Model)
             {
             <tr >

                 <td>
                     @Html.DisplayFor(modelItem => item.Title)
                 </td>

                 <td>
                     @if(updatePermission))