GraphQL query argument that accepts key value pairs?

Question

I'd like to pass the following key:value pairs to a GraphQL query. I imagine it working something like this, but have been unable to find a way to achieve this.

query myPortfolio {
  portfolio(holdings: {"btc": 0.12, "ltc": 12.1}) {
    # ...
  }
}

I attempted to create a special type and pass it as an array, but this failed compilation.

type Holding {
  coin: String!
  amount: Float!
}

type Query {  
  portfolio(holdings: [Holding!]): Portfolio!
}

Error: The type of Query.portfolio(holdings:) must be Input Type but got: [Holding!].

Karthik · Accepted Answer · 2018-11-16 16:17:24Z

1

like the message says, the arguments needs to be of input type. Change your schema to something like

type Holding {
  coin: String!
  amount: Float!
}

input HoldingInput{
  coin: String!
  amount: Float!
}

type Query {  
  portfolio(holdings: [HoldingInput!]): Portfolio!
}

answered Nov 16, 2018 at 16:17

Karthik

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