GraphiQL: "Error: Mutation fields must be an object with field names as keys or a function which returns such an object."
tobias-walle opened this issue · comments
I was trying to use this Library in Compination with GraphiQL and got this error on startup:
Error: Mutation fields must be an object with field names as keys or a function which returns such an object.
at exports.default (https://cdnjs.cloudflare.com/ajax/libs/graphiql/0.11.3/graphiql.min.js:1:555767)
at defineFieldMap (https://cdnjs.cloudflare.com/ajax/libs/graphiql/0.11.3/graphiql.min.js:1:603654)
at GraphQLObjectType.getFields (https://cdnjs.cloudflare.com/ajax/libs/graphiql/0.11.3/graphiql.min.js:1:612074)
at typeMapReducer (https://cdnjs.cloudflare.com/ajax/libs/graphiql/0.11.3/graphiql.min.js:1:646345)
at Array.reduce (<anonymous>)
at new GraphQLSchema (https://cdnjs.cloudflare.com/ajax/libs/graphiql/0.11.3/graphiql.min.js:1:650422)
at exports.buildClientSchema (https://cdnjs.cloudflare.com/ajax/libs/graphiql/0.11.3/graphiql.min.js:1:679897)
at https://cdnjs.cloudflare.com/ajax/libs/graphiql/0.11.3/graphiql.min.js:1:46309
at <anonymous>
I got the following setup:
data class HelloWorld(val id: Int, val name: String, val optional: Boolean? = null)
@Configuration
class GraphQLConfiguration {
@Bean()
fun schema() = KGraphQL.schema {
query("hero") {
resolver { -> HelloWorld(1, "hello") }
}
type<HelloWorld>()
}
}The query GraphiQL executes is the following:
{"query":"\n query IntrospectionQuery {\n __schema {\n queryType { name }\n mutationType { name }\n subscriptionType { name }\n types {\n ...FullType\n }\n directives {\n name\n description\n locations\n args {\n ...InputValue\n }\n }\n }\n }\n\n fragment FullType on __Type {\n kind\n name\n description\n fields(includeDeprecated: true) {\n name\n description\n args {\n ...InputValue\n }\n type {\n ...TypeRef\n }\n isDeprecated\n deprecationReason\n }\n inputFields {\n ...InputValue\n }\n interfaces {\n ...TypeRef\n }\n enumValues(includeDeprecated: true) {\n name\n description\n isDeprecated\n deprecationReason\n }\n possibleTypes {\n ...TypeRef\n }\n }\n\n fragment InputValue on __InputValue {\n name\n description\n type { ...TypeRef }\n defaultValue\n }\n\n fragment TypeRef on __Type {\n kind\n name\n ofType {\n kind\n name\n ofType {\n kind\n name\n ofType {\n kind\n name\n ofType {\n kind\n name\n ofType {\n kind\n name\n ofType {\n kind\n name\n ofType {\n kind\n name\n }\n }\n }\n }\n }\n }\n }\n }\n"}which returns the this result (which causes the error):
{"data":{"__schema":{"queryType":{"name":"Query"},"mutationType":{"name":"Mutation"},"subscriptionType":null,"types":[{"kind":"OBJECT","name":"HelloWorld","description":"","fields":[{"name":"id","description":null,"args":[],"type":{"kind":"NON_NULL","name":null,"ofType":{"kind":"SCALAR","name":"Int","ofType":null}},"isDeprecated":false,"deprecationReason":null},{"name":"name","description":null,"args":[],"type":{"kind":"NON_NULL","name":null,"ofType":{"kind":"SCALAR","name":"String","ofType":null}},"isDeprecated":false,"deprecationReason":null},{"name":"optional","description":null,"args":[],"type":{"kind":"SCALAR","name":"Boolean","ofType":null},"isDeprecated":false,"deprecationReason":null}],"inputFields":null,"interfaces":[],"enumValues":null,"possibleTypes":null},{"kind":"OBJECT","name":"__Schema","description":"","fields":[{"name":"directives","description":null,"args":[],"type":{"kind":"NON_NULL","name":null,"ofType":{"kind":"LIST","name":null,"ofType":{"kind":"NON_NULL","name":null,"ofType":{"kind":"OBJECT","name":"__Directive","ofType":null}}}},"isDeprecated":false,"deprecationReason":null},{"name":"mutationType","description":null,"args":[],"type":{"kind":"OBJECT","name":"__Type","ofType":null},"isDeprecated":false,"deprecationReason":null},{"name":"queryType","description":null,"args":[],"type":{"kind":"NON_NULL","name":null,"ofType":{"kind":"OBJECT","name":"__Type","ofType":null}},"isDeprecated":false,"deprecationReason":null},{"name":"subscriptionType","description":null,"args":[],"type":{"kind":"OBJECT","name":"__Type","ofType":null},"isDeprecated":false,"deprecationReason":null},{"name":"types","description":null,"args":[],"type":{"kind":"NON_NULL","name":null,"ofType":{"kind":"LIST","name":null,"ofType":{"kind":"NON_NULL","name":null,"ofType":{"kind":"OBJECT","name":"__Type","ofType":null}}}},"isDeprecated":false,"deprecationReason":null}],"inputFields":null,"interfaces":[],"enumValues":null,"possibleTypes":null},{"kind":"OBJECT","name":"__Directive","description":"","fields":[{"name":"args","description":null,"args":[],"type":{"kind":"NON_NULL","name":null,"ofType":{"kind":"LIST","name":null,"ofType":{"kind":"NON_NULL","name":null,"ofType":{"kind":"OBJECT","name":"__InputValue","ofType":null}}}},"isDeprecated":false,"deprecationReason":null},{"name":"locations","description":null,"args":[],"type":{"kind":"NON_NULL","name":null,"ofType":{"kind":"LIST","name":null,"ofType":{"kind":"NON_NULL","name":null,"ofType":{"kind":"ENUM","name":"__DirectiveLocation","ofType":null}}}},"isDeprecated":false,"deprecationReason":null},{"name":"description","description":null,"args":[],"type":{"kind":"SCALAR","name":"String","ofType":null},"isDeprecated":false,"deprecationReason":null},{"name":"name","description":null,"args":[],"type":{"kind":"NON_NULL","name":null,"ofType":{"kind":"SCALAR","name":"String","ofType":null}},"isDeprecated":false,"deprecationReason":null},{"name":"onField","description":null,"args":[],"type":{"kind":"NON_NULL","name":null,"ofType":{"kind":"SCALAR","name":"Boolean","ofType":null}},"isDeprecated":true,"deprecationReason":"Use `locations`."},{"name":"onFragment","description":null,"args":[],"type":{"kind":"NON_NULL","name":null,"ofType":{"kind":"SCALAR","name":"Boolean","ofType":null}},"isDeprecated":true,"deprecationReason":"Use `locations`."},{"name":"onOperation","description":null,"args":[],"type":{"kind":"NON_NULL","name":null,"ofType":{"kind":"SCALAR","name":"Boolean","ofType":null}},"isDeprecated":true,"deprecationReason":"Use `locations`."}],"inputFields":null,"interfaces":[],"enumValues":null,"possibleTypes":null},{"kind":"OBJECT","name":"__InputValue","description":"","fields":[{"name":"defaultValue","description":null,"args":[],"type":{"kind":"SCALAR","name":"String","ofType":null},"isDeprecated":false,"deprecationReason":null},{"name":"type","description":null,"args":[],"type":{"kind":"NON_NULL","name":null,"ofType":{"kind":"OBJECT","name":"__Type","ofType":null}},"isDeprecated":false,"deprecationReason":null},{"name":"description","description":null,"args":[],"type":{"kind":"SCALAR","name":"String","ofType":null},"isDeprecated":false,"deprecationReason":null},{"name":"name","description":null,"args":[],"type":{"kind":"NON_NULL","name":null,"ofType":{"kind":"SCALAR","name":"String","ofType":null}},"isDeprecated":false,"deprecationReason":null}],"inputFields":null,"interfaces":[],"enumValues":null,"possibleTypes":null},{"kind":"OBJECT","name":"__Type","description":"","fields":[{"name":"description","description":null,"args":[],"type":{"kind":"NON_NULL","name":null,"ofType":{"kind":"SCALAR","name":"String","ofType":null}},"isDeprecated":false,"deprecationReason":null},{"name":"enumValues","description":null,"args":[{"name":"includeDeprecated","description":null,"type":{"kind":"SCALAR","name":"Boolean","ofType":null},"defaultValue":null}],"type":{"kind":"LIST","name":null,"ofType":{"kind":"NON_NULL","name":null,"ofType":{"kind":"OBJECT","name":"__EnumValue","ofType":null}}},"isDeprecated":false,"deprecationReason":null},{"name":"fields","description":null,"args":[{"name":"includeDeprecated","description":null,"type":{"kind":"SCALAR","name":"Boolean","ofType":null},"defaultValue":null}],"type":{"kind":"LIST","name":null,"ofType":{"kind":"NON_NULL","name":null,"ofType":{"kind":"OBJECT","name":"__Field","ofType":null}}},"isDeprecated":false,"deprecationReason":null},{"name":"inputFields","description":null,"args":[],"type":{"kind":"LIST","name":null,"ofType":{"kind":"NON_NULL","name":null,"ofType":{"kind":"OBJECT","name":"__InputValue","ofType":null}}},"isDeprecated":false,"deprecationReason":null},{"name":"interfaces","description":null,"args":[],"type":{"kind":"LIST","name":null,"ofType":{"kind":"NON_NULL","name":null,"ofType":{"kind":"OBJECT","name":"__Type","ofType":null}}},"isDeprecated":false,"deprecationReason":null},{"name":"kind","description":null,"args":[],"type":{"kind":"NON_NULL","name":null,"ofType":{"kind":"ENUM","name":"__TypeKind","ofType":null}},"isDeprecated":false,"deprecationReason":null},{"name":"name","description":null,"args":[],"type":{"kind":"SCALAR","name":"String","ofType":null},"isDeprecated":false,"deprecationReason":null},{"name":"ofType","description":null,"args":[],"type":{"kind":"OBJECT","name":"__Type","ofType":null},"isDeprecated":false,"deprecationReason":null},{"name":"possibleTypes","description":null,"args":[],"type":{"kind":"LIST","name":null,"ofType":{"kind":"NON_NULL","name":null,"ofType":{"kind":"OBJECT","name":"__Type","ofType":null}}},"isDeprecated":false,"deprecationReason":null}],"inputFields":null,"interfaces":[],"enumValues":null,"possibleTypes":null},{"kind":"OBJECT","name":"__EnumValue","description":"","fields":[{"name":"deprecationReason","description":null,"args":[],"type":{"kind":"SCALAR","name":"String","ofType":null},"isDeprecated":false,"deprecationReason":null},{"name":"description","description":null,"args":[],"type":{"kind":"SCALAR","name":"String","ofType":null},"isDeprecated":false,"deprecationReason":null},{"name":"isDeprecated","description":null,"args":[],"type":{"kind":"NON_NULL","name":null,"ofType":{"kind":"SCALAR","name":"Boolean","ofType":null}},"isDeprecated":false,"deprecationReason":null},{"name":"name","description":null,"args":[],"type":{"kind":"NON_NULL","name":null,"ofType":{"kind":"SCALAR","name":"String","ofType":null}},"isDeprecated":false,"deprecationReason":null}],"inputFields":null,"interfaces":[],"enumValues":null,"possibleTypes":null},{"kind":"OBJECT","name":"__Field","description":"","fields":[{"name":"args","description":null,"args":[],"type":{"kind":"NON_NULL","name":null,"ofType":{"kind":"LIST","name":null,"ofType":{"kind":"NON_NULL","name":null,"ofType":{"kind":"OBJECT","name":"__InputValue","ofType":null}}}},"isDeprecated":false,"deprecationReason":null},{"name":"type","description":null,"args":[],"type":{"kind":"NON_NULL","name":null,"ofType":{"kind":"OBJECT","name":"__Type","ofType":null}},"isDeprecated":false,"deprecationReason":null},{"name":"deprecationReason","description":null,"args":[],"type":{"kind":"SCALAR","name":"String","ofType":null},"isDeprecated":false,"deprecationReason":null},{"name":"description","description":null,"args":[],"type":{"kind":"SCALAR","name":"String","ofType":null},"isDeprecated":false,"deprecationReason":null},{"name":"isDeprecated","description":null,"args":[],"type":{"kind":"NON_NULL","name":null,"ofType":{"kind":"SCALAR","name":"Boolean","ofType":null}},"isDeprecated":false,"deprecationReason":null},{"name":"name","description":null,"args":[],"type":{"kind":"NON_NULL","name":null,"ofType":{"kind":"SCALAR","name":"String","ofType":null}},"isDeprecated":false,"deprecationReason":null}],"inputFields":null,"interfaces":[],"enumValues":null,"possibleTypes":null},{"kind":"ENUM","name":"__TypeKind","description":"","fields":null,"inputFields":null,"interfaces":null,"enumValues":[{"name":"SCALAR","description":null,"isDeprecated":false,"deprecationReason":null},{"name":"OBJECT","description":null,"isDeprecated":false,"deprecationReason":null},{"name":"INTERFACE","description":null,"isDeprecated":false,"deprecationReason":null},{"name":"UNION","description":null,"isDeprecated":false,"deprecationReason":null},{"name":"ENUM","description":null,"isDeprecated":false,"deprecationReason":null},{"name":"INPUT_OBJECT","description":null,"isDeprecated":false,"deprecationReason":null},{"name":"LIST","description":null,"isDeprecated":false,"deprecationReason":null},{"name":"NON_NULL","description":null,"isDeprecated":false,"deprecationReason":null}],"possibleTypes":null},{"kind":"ENUM","name":"__DirectiveLocation","description":"","fields":null,"inputFields":null,"interfaces":null,"enumValues":[{"name":"QUERY","description":null,"isDeprecated":false,"deprecationReason":null},{"name":"MUTATION","description":null,"isDeprecated":false,"deprecationReason":null},{"name":"SUBSCRIPTION","description":null,"isDeprecated":false,"deprecationReason":null},{"name":"FIELD","description":null,"isDeprecated":false,"deprecationReason":null},{"name":"FRAGMENT_DEFINITION","description":null,"isDeprecated":false,"deprecationReason":null},{"name":"FRAGMENT_SPREAD","description":null,"isDeprecated":false,"deprecationReason":null},{"name":"INLINE_FRAGMENT","description":null,"isDeprecated":false,"deprecationReason":null}],"possibleTypes":null},{"kind":"SCALAR","name":"String","description":"The String scalar type represents textual data, represented as UTF‐8 character sequences","fields":null,"inputFields":null,"interfaces":null,"enumValues":null,"possibleTypes":null},{"kind":"SCALAR","name":"Boolean","description":"The Boolean scalar type represents true or false","fields":null,"inputFields":null,"interfaces":null,"enumValues":null,"possibleTypes":null},{"kind":"SCALAR","name":"Float","description":"The Float scalar type represents signed double‐precision fractional values as specified by IEEE 754","fields":null,"inputFields":null,"interfaces":null,"enumValues":null,"possibleTypes":null},{"kind":"SCALAR","name":"Int","description":"The Int scalar type represents a signed 32‐bit numeric non‐fractional value","fields":null,"inputFields":null,"interfaces":null,"enumValues":null,"possibleTypes":null},{"kind":"SCALAR","name":"Long","description":"The Long scalar type represents a signed 64‐bit numeric non‐fractional value","fields":null,"inputFields":null,"interfaces":null,"enumValues":null,"possibleTypes":null},{"kind":"OBJECT","name":"Mutation","description":"Mutation object","fields":[],"inputFields":null,"interfaces":[],"enumValues":null,"possibleTypes":null},{"kind":"OBJECT","name":"Query","description":"Query object","fields":[{"name":"hero","description":null,"args":[],"type":{"kind":"NON_NULL","name":null,"ofType":{"kind":"OBJECT","name":"HelloWorld","ofType":null}},"isDeprecated":false,"deprecationReason":null}],"inputFields":null,"interfaces":[],"enumValues":null,"possibleTypes":null}],"directives":[{"name":"skip","description":null,"locations":["FIELD","FRAGMENT_SPREAD","INLINE_FRAGMENT"],"args":[{"name":"if","description":null,"type":{"kind":"NON_NULL","name":null,"ofType":{"kind":"SCALAR","name":"Boolean","ofType":null}},"defaultValue":null}]},{"name":"include","description":null,"locations":["FIELD","FRAGMENT_SPREAD","INLINE_FRAGMENT"],"args":[{"name":"if","description":null,"type":{"kind":"NON_NULL","name":null,"ofType":{"kind":"SCALAR","name":"Boolean","ofType":null}},"defaultValue":null}]}]}}}My guess is that GraphiQL requires the mutation fields.
After adding some mutation fields the error disappeared:
data class HelloWorld(val id: Int, val name: String, val optional: Boolean? = null)
@Configuration
class GraphQLConfiguration {
@Bean()
fun schema() = KGraphQL.schema {
query("hero") {
resolver { -> HelloWorld(1, "hello") }
}
mutation("test") {
resolver { -> HelloWorld(2, "test", false) }
}
type<HelloWorld>()
}
}The new query output is the following:
{"data":{"__schema":{"queryType":{"name":"Query"},"mutationType":{"name":"Mutation"},"subscriptionType":null,"types":[{"kind":"OBJECT","name":"HelloWorld","description":"","fields":[{"name":"id","description":null,"args":[],"type":{"kind":"NON_NULL","name":null,"ofType":{"kind":"SCALAR","name":"Int","ofType":null}},"isDeprecated":false,"deprecationReason":null},{"name":"name","description":null,"args":[],"type":{"kind":"NON_NULL","name":null,"ofType":{"kind":"SCALAR","name":"String","ofType":null}},"isDeprecated":false,"deprecationReason":null},{"name":"optional","description":null,"args":[],"type":{"kind":"SCALAR","name":"Boolean","ofType":null},"isDeprecated":false,"deprecationReason":null}],"inputFields":null,"interfaces":[],"enumValues":null,"possibleTypes":null},{"kind":"OBJECT","name":"__Schema","description":"","fields":[{"name":"directives","description":null,"args":[],"type":{"kind":"NON_NULL","name":null,"ofType":{"kind":"LIST","name":null,"ofType":{"kind":"NON_NULL","name":null,"ofType":{"kind":"OBJECT","name":"__Directive","ofType":null}}}},"isDeprecated":false,"deprecationReason":null},{"name":"mutationType","description":null,"args":[],"type":{"kind":"OBJECT","name":"__Type","ofType":null},"isDeprecated":false,"deprecationReason":null},{"name":"queryType","description":null,"args":[],"type":{"kind":"NON_NULL","name":null,"ofType":{"kind":"OBJECT","name":"__Type","ofType":null}},"isDeprecated":false,"deprecationReason":null},{"name":"subscriptionType","description":null,"args":[],"type":{"kind":"OBJECT","name":"__Type","ofType":null},"isDeprecated":false,"deprecationReason":null},{"name":"types","description":null,"args":[],"type":{"kind":"NON_NULL","name":null,"ofType":{"kind":"LIST","name":null,"ofType":{"kind":"NON_NULL","name":null,"ofType":{"kind":"OBJECT","name":"__Type","ofType":null}}}},"isDeprecated":false,"deprecationReason":null}],"inputFields":null,"interfaces":[],"enumValues":null,"possibleTypes":null},{"kind":"OBJECT","name":"__Directive","description":"","fields":[{"name":"args","description":null,"args":[],"type":{"kind":"NON_NULL","name":null,"ofType":{"kind":"LIST","name":null,"ofType":{"kind":"NON_NULL","name":null,"ofType":{"kind":"OBJECT","name":"__InputValue","ofType":null}}}},"isDeprecated":false,"deprecationReason":null},{"name":"locations","description":null,"args":[],"type":{"kind":"NON_NULL","name":null,"ofType":{"kind":"LIST","name":null,"ofType":{"kind":"NON_NULL","name":null,"ofType":{"kind":"ENUM","name":"__DirectiveLocation","ofType":null}}}},"isDeprecated":false,"deprecationReason":null},{"name":"description","description":null,"args":[],"type":{"kind":"SCALAR","name":"String","ofType":null},"isDeprecated":false,"deprecationReason":null},{"name":"name","description":null,"args":[],"type":{"kind":"NON_NULL","name":null,"ofType":{"kind":"SCALAR","name":"String","ofType":null}},"isDeprecated":false,"deprecationReason":null},{"name":"onField","description":null,"args":[],"type":{"kind":"NON_NULL","name":null,"ofType":{"kind":"SCALAR","name":"Boolean","ofType":null}},"isDeprecated":true,"deprecationReason":"Use `locations`."},{"name":"onFragment","description":null,"args":[],"type":{"kind":"NON_NULL","name":null,"ofType":{"kind":"SCALAR","name":"Boolean","ofType":null}},"isDeprecated":true,"deprecationReason":"Use `locations`."},{"name":"onOperation","description":null,"args":[],"type":{"kind":"NON_NULL","name":null,"ofType":{"kind":"SCALAR","name":"Boolean","ofType":null}},"isDeprecated":true,"deprecationReason":"Use `locations`."}],"inputFields":null,"interfaces":[],"enumValues":null,"possibleTypes":null},{"kind":"OBJECT","name":"__InputValue","description":"","fields":[{"name":"defaultValue","description":null,"args":[],"type":{"kind":"SCALAR","name":"String","ofType":null},"isDeprecated":false,"deprecationReason":null},{"name":"type","description":null,"args":[],"type":{"kind":"NON_NULL","name":null,"ofType":{"kind":"OBJECT","name":"__Type","ofType":null}},"isDeprecated":false,"deprecationReason":null},{"name":"description","description":null,"args":[],"type":{"kind":"SCALAR","name":"String","ofType":null},"isDeprecated":false,"deprecationReason":null},{"name":"name","description":null,"args":[],"type":{"kind":"NON_NULL","name":null,"ofType":{"kind":"SCALAR","name":"String","ofType":null}},"isDeprecated":false,"deprecationReason":null}],"inputFields":null,"interfaces":[],"enumValues":null,"possibleTypes":null},{"kind":"OBJECT","name":"__Type","description":"","fields":[{"name":"description","description":null,"args":[],"type":{"kind":"NON_NULL","name":null,"ofType":{"kind":"SCALAR","name":"String","ofType":null}},"isDeprecated":false,"deprecationReason":null},{"name":"enumValues","description":null,"args":[{"name":"includeDeprecated","description":null,"type":{"kind":"SCALAR","name":"Boolean","ofType":null},"defaultValue":null}],"type":{"kind":"LIST","name":null,"ofType":{"kind":"NON_NULL","name":null,"ofType":{"kind":"OBJECT","name":"__EnumValue","ofType":null}}},"isDeprecated":false,"deprecationReason":null},{"name":"fields","description":null,"args":[{"name":"includeDeprecated","description":null,"type":{"kind":"SCALAR","name":"Boolean","ofType":null},"defaultValue":null}],"type":{"kind":"LIST","name":null,"ofType":{"kind":"NON_NULL","name":null,"ofType":{"kind":"OBJECT","name":"__Field","ofType":null}}},"isDeprecated":false,"deprecationReason":null},{"name":"inputFields","description":null,"args":[],"type":{"kind":"LIST","name":null,"ofType":{"kind":"NON_NULL","name":null,"ofType":{"kind":"OBJECT","name":"__InputValue","ofType":null}}},"isDeprecated":false,"deprecationReason":null},{"name":"interfaces","description":null,"args":[],"type":{"kind":"LIST","name":null,"ofType":{"kind":"NON_NULL","name":null,"ofType":{"kind":"OBJECT","name":"__Type","ofType":null}}},"isDeprecated":false,"deprecationReason":null},{"name":"kind","description":null,"args":[],"type":{"kind":"NON_NULL","name":null,"ofType":{"kind":"ENUM","name":"__TypeKind","ofType":null}},"isDeprecated":false,"deprecationReason":null},{"name":"name","description":null,"args":[],"type":{"kind":"SCALAR","name":"String","ofType":null},"isDeprecated":false,"deprecationReason":null},{"name":"ofType","description":null,"args":[],"type":{"kind":"OBJECT","name":"__Type","ofType":null},"isDeprecated":false,"deprecationReason":null},{"name":"possibleTypes","description":null,"args":[],"type":{"kind":"LIST","name":null,"ofType":{"kind":"NON_NULL","name":null,"ofType":{"kind":"OBJECT","name":"__Type","ofType":null}}},"isDeprecated":false,"deprecationReason":null}],"inputFields":null,"interfaces":[],"enumValues":null,"possibleTypes":null},{"kind":"OBJECT","name":"__EnumValue","description":"","fields":[{"name":"deprecationReason","description":null,"args":[],"type":{"kind":"SCALAR","name":"String","ofType":null},"isDeprecated":false,"deprecationReason":null},{"name":"description","description":null,"args":[],"type":{"kind":"SCALAR","name":"String","ofType":null},"isDeprecated":false,"deprecationReason":null},{"name":"isDeprecated","description":null,"args":[],"type":{"kind":"NON_NULL","name":null,"ofType":{"kind":"SCALAR","name":"Boolean","ofType":null}},"isDeprecated":false,"deprecationReason":null},{"name":"name","description":null,"args":[],"type":{"kind":"NON_NULL","name":null,"ofType":{"kind":"SCALAR","name":"String","ofType":null}},"isDeprecated":false,"deprecationReason":null}],"inputFields":null,"interfaces":[],"enumValues":null,"possibleTypes":null},{"kind":"OBJECT","name":"__Field","description":"","fields":[{"name":"args","description":null,"args":[],"type":{"kind":"NON_NULL","name":null,"ofType":{"kind":"LIST","name":null,"ofType":{"kind":"NON_NULL","name":null,"ofType":{"kind":"OBJECT","name":"__InputValue","ofType":null}}}},"isDeprecated":false,"deprecationReason":null},{"name":"type","description":null,"args":[],"type":{"kind":"NON_NULL","name":null,"ofType":{"kind":"OBJECT","name":"__Type","ofType":null}},"isDeprecated":false,"deprecationReason":null},{"name":"deprecationReason","description":null,"args":[],"type":{"kind":"SCALAR","name":"String","ofType":null},"isDeprecated":false,"deprecationReason":null},{"name":"description","description":null,"args":[],"type":{"kind":"SCALAR","name":"String","ofType":null},"isDeprecated":false,"deprecationReason":null},{"name":"isDeprecated","description":null,"args":[],"type":{"kind":"NON_NULL","name":null,"ofType":{"kind":"SCALAR","name":"Boolean","ofType":null}},"isDeprecated":false,"deprecationReason":null},{"name":"name","description":null,"args":[],"type":{"kind":"NON_NULL","name":null,"ofType":{"kind":"SCALAR","name":"String","ofType":null}},"isDeprecated":false,"deprecationReason":null}],"inputFields":null,"interfaces":[],"enumValues":null,"possibleTypes":null},{"kind":"ENUM","name":"__TypeKind","description":"","fields":null,"inputFields":null,"interfaces":null,"enumValues":[{"name":"SCALAR","description":null,"isDeprecated":false,"deprecationReason":null},{"name":"OBJECT","description":null,"isDeprecated":false,"deprecationReason":null},{"name":"INTERFACE","description":null,"isDeprecated":false,"deprecationReason":null},{"name":"UNION","description":null,"isDeprecated":false,"deprecationReason":null},{"name":"ENUM","description":null,"isDeprecated":false,"deprecationReason":null},{"name":"INPUT_OBJECT","description":null,"isDeprecated":false,"deprecationReason":null},{"name":"LIST","description":null,"isDeprecated":false,"deprecationReason":null},{"name":"NON_NULL","description":null,"isDeprecated":false,"deprecationReason":null}],"possibleTypes":null},{"kind":"ENUM","name":"__DirectiveLocation","description":"","fields":null,"inputFields":null,"interfaces":null,"enumValues":[{"name":"QUERY","description":null,"isDeprecated":false,"deprecationReason":null},{"name":"MUTATION","description":null,"isDeprecated":false,"deprecationReason":null},{"name":"SUBSCRIPTION","description":null,"isDeprecated":false,"deprecationReason":null},{"name":"FIELD","description":null,"isDeprecated":false,"deprecationReason":null},{"name":"FRAGMENT_DEFINITION","description":null,"isDeprecated":false,"deprecationReason":null},{"name":"FRAGMENT_SPREAD","description":null,"isDeprecated":false,"deprecationReason":null},{"name":"INLINE_FRAGMENT","description":null,"isDeprecated":false,"deprecationReason":null}],"possibleTypes":null},{"kind":"SCALAR","name":"String","description":"The String scalar type represents textual data, represented as UTF‐8 character sequences","fields":null,"inputFields":null,"interfaces":null,"enumValues":null,"possibleTypes":null},{"kind":"SCALAR","name":"Boolean","description":"The Boolean scalar type represents true or false","fields":null,"inputFields":null,"interfaces":null,"enumValues":null,"possibleTypes":null},{"kind":"SCALAR","name":"Float","description":"The Float scalar type represents signed double‐precision fractional values as specified by IEEE 754","fields":null,"inputFields":null,"interfaces":null,"enumValues":null,"possibleTypes":null},{"kind":"SCALAR","name":"Int","description":"The Int scalar type represents a signed 32‐bit numeric non‐fractional value","fields":null,"inputFields":null,"interfaces":null,"enumValues":null,"possibleTypes":null},{"kind":"SCALAR","name":"Long","description":"The Long scalar type represents a signed 64‐bit numeric non‐fractional value","fields":null,"inputFields":null,"interfaces":null,"enumValues":null,"possibleTypes":null},{"kind":"OBJECT","name":"Mutation","description":"Mutation object","fields":[{"name":"test","description":null,"args":[],"type":{"kind":"NON_NULL","name":null,"ofType":{"kind":"OBJECT","name":"HelloWorld","ofType":null}},"isDeprecated":false,"deprecationReason":null}],"inputFields":null,"interfaces":[],"enumValues":null,"possibleTypes":null},{"kind":"OBJECT","name":"Query","description":"Query object","fields":[{"name":"hero","description":null,"args":[],"type":{"kind":"NON_NULL","name":null,"ofType":{"kind":"OBJECT","name":"HelloWorld","ofType":null}},"isDeprecated":false,"deprecationReason":null}],"inputFields":null,"interfaces":[],"enumValues":null,"possibleTypes":null}],"directives":[{"name":"skip","description":null,"locations":["FIELD","FRAGMENT_SPREAD","INLINE_FRAGMENT"],"args":[{"name":"if","description":null,"type":{"kind":"NON_NULL","name":null,"ofType":{"kind":"SCALAR","name":"Boolean","ofType":null}},"defaultValue":null}]},{"name":"include","description":null,"locations":["FIELD","FRAGMENT_SPREAD","INLINE_FRAGMENT"],"args":[{"name":"if","description":null,"type":{"kind":"NON_NULL","name":null,"ofType":{"kind":"SCALAR","name":"Boolean","ofType":null}},"defaultValue":null}]}]}}}I don't know if this is an issue with GraphiQL or this library. I found a similar issue on "graphql-ruby", which got fixed. Issue Fix.
If I find the time I might try to fix it by myself.
Hi @TobiasWalle, thank you for your report!
I've played a little bit with GraphiQL and reproduced your issue. As you said, GraphiQL requires mutation object with at least one field. No mutation object in schema yields same error, and in my opinion this is a bug in GraphiQL.
GraphQL specification explicitly states that:
The mutation type is optional; if it is null, that means the system does not support mutations. If it is provided, it must be an object base type.
Moreover, it does not state that Object type has to contain at least one field.
Adding built-in mutation field (like in graphql-ruby library you've linked) is dirty workaround. Right now, I think we should create section on documentation about integration with Graphiql, and leave creating mutation fields to users.
Hello @pgutkowski, thank you for reviewing this issue.
I also want to thank you for the work you putting in this library. I really enjoy using it.
Thank you @TobiasWalle for your kind words! I hope you won't meet any further problems using KGraphQL in future.