Relational fields are ignored if they are nested 2 levels or deeper in the 'where' parameter

[DavidKrpt]

Pretty much the title.
Here's the function that looks for relational fields:

  Model.whichFieldsAreRelational = function (where) {
    return _.keys(where).filter((key) => {
      const headKey = key.split('.')[0];
      return Model.relations[headKey];
    });
  };

if my relational fields are nested like this:

    {
      where: {
        or: [
          {
            'relation.field': someOperator
          }
        ]
      }
    }

they will be ignored. In simple cases you can flatten the 'where' and bring relation fields to the upper level, but it isn't always possible.