How to run a mutation? Add example to Readme

I can query just fine, but I’m having a hard time figuring out the correct format for mutations. Here’s a screenshot of what I’m playing with:

https://www.dropbox.com/s/4g0r4ii3z3u7zir/Screenshot 2015-12-16 10.58.25.png?dl=0

Basically I’m just not sure of the correct format for setting up the ChangeCohortInput but I remember seeing someone else do it by making that as a variable in the Query Variables section.

[sarink]

If you’re like me, you simply missed the sneaky “variables” input box (bottom left corner):

[tinnou]

Let say your ChangeCohortInput has the fields clientMutationId and title.

Your mutation would look like:

mutation example($cohort: ChangeCohortInput!){
  change_cohort(input: $cohort) {
    user {
      cohort {
        title
      }
    }
  }
}

and variables

{
  "cohort": {
    "clientMutationId": "random",
    "title": "New cohort title"
  }
}