How to inherits a BaseRazorPage in Razor page - razor-pages

Question

In razor engine way, I can define a BaseRazorPage for all razor views
public abstract class BaseRazorPage<TModel> : RazorPage<TModel>
{
protected BaseRazorPage()
{
}
protected virtual string L(string name)
{
return XXX.Localization.L.Text[name];
}
......
}
Use it in _viewImports.cshtml
#inherits BaseRazorPage<TModel>
Then I can use the L function to do mutiple language in views:
#L("Hello word!")
How can I implement same function in Razor page way? Or is there an alternative way to do this?
The razor page can't inherits any class.

Answer 1

A simple solution would be to create an extension for the PageModel class.
public static class PageModelExtensions
{
public static string L(this PageModel pageModel, string name)
{
// return a new value. put your logic here
return name + "_result";
}
}
Now we can use the L method as a member function.
public class IndexModel : PageModel
{
public void OnGet()
{
string value = this.L("test");
}
}
Or we can use the L method in the view like this
#page
#model IndexModel
#{
ViewData["Title"] = "Home page";
}
<div class="text-center">
<h1 class="display-4">Welcome</h1>
<p>#Model.L("test")</p>
</div>
I hope this helps.
UPDATE
If you want to have a base class with your common methods the following example is what you want.
public class MyPageModel : PageModel
{
public string L(string name)
{
return "sample";
}
}
And your razor page class will look like this.
public class IndexModel : MyPageModel
{
public void OnGet()
{
string value = this.L("test");
}
}
In case you want to inject an object in your base class then you base class should look like this.
public class MyPageModel : PageModel
{
private readonly ApplicationDbContext context;
public MyPageModel(ApplicationDbContext context)
{
this.context = context;
}
public string L(string name)
{
return "sample";
}
}
And the Razor page will look like this
public class IndexModel : MyPageModel
{
private readonly ApplicationDbContext context;
public IndexModel(ApplicationDbContext context)
: base(context)
{
this.context = context;
}
public void OnGet()
{
string value = this.L("test");
}
}