How to filter by a key inside an object?

Looking to filter by a key inside a nested JSON object. How would I accomplish that?

query

filter: {
  details: {
    selling_asset_code: "USD"
  }
}

data

{
  "data": {
    "allHistoryOperations": {
      "nodes": [
        {
          "transactionId": "33362562925989890",
          "details": {
            "price": "2.9973324",
            "amount": "149.1600010",
            "price_r": {
              "d": 100000000,
              "n": 299733237
            },
            "offer_id": 120736,
            "buying_asset_type": "native",
            "selling_asset_code": "USD",
            "selling_asset_type": "credit_alphanum4",
            "selling_asset_issuer": "GA7RXKBZOUA3FCUUS65JRLU5SZD3XBQUGRWL7NVQWU5QOXQW2LUZNBFZ"
          },
          "type": 3
        }
      ]
    }
  }
}

[mattbretl]

Agh, it’s my fault. Here’s the culprit:

https://github.com/graphile-contrib/postgraphile-plugin-connection-filter/blob/28ad0b65a6b293460d1109a4639daf39b51d1324/src/PgConnectionArgFilterOperatorsPlugin.js#L601-L604

Getting late here, so I’ll try to fix it tomorrow.

[mattbretl]

createdb issue31
psql issue31

create schema p;
create table p.foo (id serial primary key, bar jsonb);
insert into p.foo (id, bar) values (2, '[{"a":1},{"b":2}]'::jsonb);

mkdir issue31
cd issue31
yarn add postgraphile
yarn add postgraphile-plugin-connection-filter
npx postgraphile --append-plugins postgraphile-plugin-connection-filter -c postgres://localhost:5432/issue31 --schema p

query {
  allFoos(filter: { bar: { contains: "[{\"a\":1}]" } }) {
    nodes {
      id
      bar
    }
  }
}

{
  "data": {
    "allFoos": {
      "nodes": [
        {
          "id": 2,
          "bar": "[{\"a\":1},{\"b\":2}]"
        }
      ]
    }
  }
}

That works as expected.

But with --dynamic-json, it fails:

npx postgraphile --append-plugins postgraile-plugin-connection-filter -c postgres://localhost:5432/issue31 --schema p --dynamic-json

query {
  allFoos(filter: { bar: { contains: [{a:1}] } }) {
    nodes {
      id
      bar
    }
  }
}

{
  "data": {
    "allFoos": {
      "nodes": []
    }
  }
}

The --dynamic-json support is part of the PostGraphile core lib, so hopefully @benjie can offer some insight?