Using multiple `.Order()` methods when querying doesn't work as expected.

[hunsra]

Bug report

Describe the bug

Using more than one .Order() method in a query doesn't seem to work. Only the first .Order() method is honored.

To Reproduce

Given a model with the following structure (and a corresponding table in a Supabase project):

[Table("Contacts")]
public class Contact : BaseModel
{
	[Column("first_name")]
	public string FirstName { get; set; }

	[Column("middle_name")]
	public string MiddleName { get; set; }

	[Column("last_name")]
	public string LastName { get; set; }
}

Making the following query:

response = await client.From<Contact>()
            .Order("last_name", Ordering.Ascending)
            .Order("first_name", Ordering.Ascending)
            .Order("middle_name", Ordering.Ascending)
            .Get();

Results in a list of Contact models that are only ordered by the "last_name" column.

Expected behavior

The resulting list should be ordered by the "last_name" column, then by the "first_name" column, then by the "middle_name" column.

Screenshots

The Supabase Edge API Network Log seems to indicate the proper ?order= query parameter is being created, but it is not returning records int he correct order, as described above:

"search": "?order=last_name.asc.nullsfirst&order=first_name.asc.nullsfirst&order=middle_name.asc.nullsfirst",

System information

• OS: iOS 17.0 simulator (also happens on Windows 11)
• Version of supabase-csharp: 0.14.0

Additional context

This is happening in a .NET MAUI application targeting iOS, Android, Windows, and Mac Catalyst.

[hunsra]

Here's a screenshot of the resulting Models array from the debugger. As you can see, the first two items are in the wrong order:

[acupofjose]

I believe it's a matter of it being a comma separated query list instead of an additional order query variable! (see here).

If you want to do a PR, that'd be awesome! Otherwise I'll get to it when I can. The relevant code should be around here in Table.cs:

postgrest-csharp/Postgrest/Table.cs

Lines 658 to 667 in 20240e6

	foreach (var orderer in _orderers)
	{
	var nullPosAttr = orderer.NullPosition.GetAttribute<MapToAttribute>();
	var orderingAttr = orderer.Ordering.GetAttribute<MapToAttribute>();
	if (nullPosAttr == null || orderingAttr == null) continue;
	var key = !string.IsNullOrEmpty(orderer.ForeignTable) ? $"{orderer.ForeignTable}.order" : "order";
	query.Add(key, $"{orderer.Column}.{orderingAttr.Mapping}.{nullPosAttr.Mapping}");
	}

[hunsra]

Thanks @acupofjose.

Ah. I see. So, the query parameter needs to be formatted as a single, comma-separated list of order expressions, as in:

?order=last_name.asc.nullsfirst,first_name.asc.nullsfirst,middle_name.asc.nullsfirst

not as multiple chained query parameters, as in:

?order=last_name.asc.nullsfirst&order=first_name.asc.nullsfirst&order=middle_name.asc.nullsfirst

I'll try to see if I can make a PR to address it, but I can't promise anything as I've never made any edits to this codebase. Fingers crossed.

[acupofjose]

You’ve got it! That’s the necessary change. Like I said, the PR is appreciated (we love new contributors) but if you can wait, I’m happy to get to it myself.

[hunsra]

Understood, thanks.

Since I'm using the project, I'd like to be able to contribute. I'll give it a shot and make a PR if I can get it working.