Is there a way with Rails/Postgres to get records in a random order BUT place certain values first?

I have an app that returns a bunch of records in a list in a random order with some pagination. For this, I save a seed value (so that refreshing the page will return the list in the same order again) and then use .order('random()').

However, say that out of 100 records, I have 10 records that have a preferred_level = 1 while all the other 90 records have preferred_level = 0.

Is there some way that I can place the preferred_level = 1 records first but still keep everything randomized?

For example, I have [A,1],[X,0],[Y,0],[Z,0],[B,1],[C,1],[W,0] and I hope I would get back something like [B,1],[A,1],[C,1],[Z,0],[X,0],[Y,0],[W,0].

Note that even the ones with preferred_level = 1 are randomized within themselves, just that they come before all the 0 records. In theory, I would hope whatever solution would place preferred_level = 2 before the 1 records if I were ever to add them.

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I had hoped it would be as intuitively simple as Model.all.order('random()').order('preferred_level DESC') but that doesn't seem to be the case. The second order doesn't seem to affect anything.

Any help would be appreciated!