// Searches the given table (DbSet) with the given query (enhancer) and converts it to some time via 'selector'
protected async Task <IActionResult> SelectOr404 <T>(Func <DbSet <T>, IQueryable <T> > enhancer, Func <T, object> selector) where T : class
{
var query = enhancer(context.Set <T>());
T entity = await(
from entry in query
select entry
).FirstOrDefaultAsync();
if (entity == null)
{
return(NotFound());
}
else
{
return(Ok(selector(entity)));
}
}
