Mutation with list of strings Variable "$_v0_data" got invalid value Graphql Node.js

Question

I have this simple mutation that works fine

    type Mutation {
    addJob(
        url: String!
        description: String!
        position: String!
        company: String!
        date: DateTime!
        tags: [String!]!
    ): Job
}

Mutation Resolver

    function addJob(parent, args, context, info) {

    console.log('Tags => ', args.tags)
    // const userId = getUserId(context)
    return context.db.mutation.createJob(
        {
            data: {
                position: args.position,
                componay: args.company,
                date: args.date,
                url: args.url,
                description: args.description,
                tags: args.tags
            }
        },
        info
    )
}

however, once I tried to put an array of strings(tags) as you see above I I can't get it to work and I got this error

Error: Variable "$_v0_data" got invalid value { ... , tags: ["devops", "aws"] }; Field "0" is not defined by type JobCreatetagsInput at value.tags.

If I assigned an empty array to tags in the mutation there is no problem, however if I put a single string value ["DevOps"] for example i get the error

Did you change your mutation schema recently? Did you prisma deploy? It seems like the type JobCreatetagsInput is not expecting this String type. — Elfayer
– Elfayer, Commented Nov 7, 2018 at 1:35
@Elfayer No, it's not changed at all and if I tried Prisma deploy the schema is up to date, and about this is the JobCreatetagsInput , input JobCreatetagsInput { set: [String!] } — Mo Hajr
– Mo Hajr, Commented Nov 7, 2018 at 9:12

Mo Hajr · Accepted Answer · 2018-11-09 12:03:37Z

4

The issue was in the resolver function apparently as I found here I have to assign the tags list within an object in the set argument like the code below

function addJob(parent, args, context, info) {
    return context.db.mutation.createJob(
        {
            data: {
                position: args.position,
                componay: args.company,
                date: args.date,
                url: args.url,
                description: args.description,
                tags: { set: args.tags }
            }
        },
        info
    )
}

answered Nov 9, 2018 at 12:03

Mo Hajr

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2 Comments

Merlyn007 Over a year ago

Thanks for sharing, works as a charm is not clear about this in the doc.

Mo Hajr Over a year ago

@Merlyn007 glad it helped ^^

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