How to JSONify GraphQL Mutation query, and how to implement juniper trait

help
1

Hello.

I'm learning GraphQL with the juniper crate and I'm trying to send Mutations encoded as JSON to the GraphQL server. I have two questions because the answer for one may solve the problem for the other.

I created the JSONified Mutation query using this Rust code.

When I print out the JSON result, I get this.

After I POST the request, I receive this for the error.

So now my questions:

  1. Is the JSONified Mutation query in the correct format?
  2. I don't fully understand the error message sent back by the server; I'm thinking that it's telling me that the Owner data type to use as an input type to a Mutation. How can I make it a valid input type, if so? I see that GraphQL has the concept of Scalars, and juniper has traits like ToInputValue, and I'm wondering if it's possible to do so for Owner, but I'm a bit lost on how to implement the trait.

Thanks!

2

Your mutation_query.json contains a bunch of returns, "\n", in the "query" field.

This is not valid JSON. At least JSON.parse in node.js does not like it and it looks all wrong to me.

3

Hello @ZiCog. Thanks for your response. I believe those returns are more a feature of how JSON is formatted to print in the serde_json crate than invalid JSON. I've run queries before that do not error out, so I'm almost certain that isn't the issue in this case.

4

For any who may happen to come across a similar problem, I was able to solve problem 2. I eventually found the GraphQLInputObject trait, which can be auto-derived for your custom data types. All members of your custom data type must implement GraphQLType.

5

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