Populate should accept either an array or a string about moleculer-db HOT 5 CLOSED

Thanks. Could you make a PR fix? Here we need to check it is a string with _.isString. If yes, convert it to array.

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I think that this issue was related with #63, which was solved. So this issue can be closed, right?

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I'll do

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@icebob I don't think that's the problem. The sanitizeParams method should take care of it:

I believe the problem is in the params validator:

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I tried to add a new validation to accept both types:

populate: [
  { type: "string", optional: true },
  { type: "array", optional: true, items: "string" }
],

However, it's failing bc it seems do not accept optional for multi validation.

Any thoughts?

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