13-change-check-in-status-with-a-graphql-mutation.md

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Summary

In this lesson we learn how to check a pet in using a pet id.

Notes

It's time to check our pet back in. To ge this done, we are going to use the named mutation checkIn.

The checkIn mutation takes in a pet id and returns an object called checkOut. checkOut returns the pet object, checkOutDate, checkInDate and a boolean late.

mutation CheckIn {
  checkIn(id: "S-2") {
    pet {
      name
    }
    checkOutDate
    checkInDate
    late
  }
}

Now that we've checked out and checked in a pet, we can view this data on a query called allCustomers. Here we can query username and checkoutHistory. checkoutHistory returns a list of checkouts and pet information.

query {
  allCustomers {
    username
    checkoutHistory {
      pet {
        id
        name
      }
    }
  }
}