GraphQL Query with two parameters

Question

I'm new to GraphQL and I'm working with an appointments app. This is the data that I'm getting from the API

[
  {
    "appointmentID": "xza120",
    "patient": {
      "firstName": "John",
      "lastName": "Black"
    }
  }
]

Querying appointment by id was relatively easy.

query GetAppointmentById {
  appointment(appointmentCode: "xza120") {
    appointmentID
    firstName
    lastName
  }
}

My question is: What about if I want to look for the combination of appointmentID and lastName? (Eg: A patient might have multiple appointments, so I just want to retrieve the appointment code that matches with the last name.). Is it possible to do it with GraphQL? Should I prefer to do it in the code rather than in the query?

Thanks a lot in advance,

Guillermo.

coreyward · Accepted Answer · 2019-06-04 17:44:25Z

4

Since GraphQL is a spec and each server determines the arguments it accepts and their behavior it's hard to generalize and still provide accurate information; this said, you can provide multiple arguments to a query and typically servers will support this. For example:

query GetAppointmentById {
  appointment(appointmentCode: "xza120", lastName: "Black") {
    appointmentID
    firstName
    lastName
  }
}

answered Jun 4, 2019 at 17:44

coreyward

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2 Comments

Guillermo Over a year ago

Thanks a lot for your answer! My only doubt is: How do I know if it will take the first or second argument for the first lookup? As you can see according to the data the most reasonable way of querying it would be to use the appointmentCode first and then the lastName.

xadm Over a year ago

@Guillermo it will work the way you implement the apropriate resolver - if generated check docs

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