Allow to filter trades by order id

[anxolin]

currently not possible

[nlordell]

This works for me:

query {
  trades(where: {
    order: "0xa5a69107816c5e3dfa5561e6b621dfe6294f6e5b-115"
  }) {
    buyVolume
    sellVolume
  }
}

Or do you mean trades for a given order ID and not user/order ID pair? In that case you could so this (but its kind of hacky):

query {
  trades(where: {
    order_ends_with: "-115"
  }) {
    buyVolume
    sellVolume
  }
}

[anxolin]

yes, this one is easy. It's just denormalize it a bit for allowing this filter. Orderid is so important I wouldn't use this hacky way.

I think it's a good one to start getting the hang of this repo and deploy a version with just this change :)