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GraphQLの循環定義を解決する必要がありますが、何らかの理由で解決できません。 I'veはサンクと遅延読み込みに関するいくつかの記事をチェックして、ここに私の現在のコードです:Thunkを使用したGraphQL循環参照 - エラー:フィールドタイプは出力タイプである必要がありますが、未定義です
歴史/ types.js
const fields = {
id: {
type: new GraphQLNonNull(GraphQLID),
resolve: (obj) => dbIdToNodeId(obj._id, "History")
},
timestamp: {
type: GraphQLLong
},
objectId: {
type: GraphQLString
},
user: {
type: require('../User/connections').default,
args: connectionArgs,
resolve: (source, args) => {
return UserModel.findOne({ id: source.id }).exec();
}
},
action: {
type: new GraphQLNonNull(GraphQLString)
}
};
export const HistoryType = new GraphQLObjectType({
name: 'History',
description: 'History',
interfaces:() => [NodeInterface],
isTypeOf: (value) => value instanceof HistoryModel,
fields:() => (fields)
});
歴史/ connections.js:
import { HistoryType } from './types';
const { connectionType: HistoryConnectionType } = connectionDefinitions({ nodeType: HistoryType });
export default HistoryConnectionType;
ユーザー/ types.js
const fields = {
id: {
type: new GraphQLNonNull(GraphQLID),
resolve: (obj) => dbIdToNodeId(obj._id, "User")
},
email: {
type: GraphQLString
},
history: {
type: require('../History/connections').default,
args: connectionArgs,
resolve: (source, args, context) => {
return HistoryModel.find({ deleted: false, objectId: source.id}).sort('timestamp').exec();
}
}
};
export const UserType = new GraphQLObjectType({
name: 'User',
description: 'User',
interfaces:() => [NodeInterface],
isTypeOf: (value) => value instanceof UserModel,
fields:() => (fields)
});
ユーザー/ connections.js
import { UserType } from './types';
const { connectionType: UserConnectionType } = connectionDefinitions({ nodeType: UserType });
export default UserConnectionType;
会社/ types.js
const fields = {
id: {
type: new GraphQLNonNull(GraphQLID),
resolve: (obj) => dbIdToNodeId(obj._id, "Company")
},
name: {
type: GraphQLString
},
users: {
type: require('../User/connections').default,
args: connectionArgs,
resolve: (source, args) => {
const { id } = source;
return UserModel.find({ companyId: id }).then((rows) => connectionFromArray(rows,args));
}
},
history: {
type: require('../History/connections').default,
args: connectionArgs,
resolve(source, args, context) {
return loaders.getHistory(source.id);
}
}
};
export const CompanyType = new GraphQLObjectType({
name: 'Company',
description: 'Company',
interfaces:() => [NodeInterface],
isTypeOf: (value) => value instanceof CompanyModel,
fields:() => (fields)
});
会社/ connections.js
import { CompanyType } from './types';
const { connectionType: CompanyConnectionType } = connectionDefinitions({ nodeType: CompanyType });
export default CompanyConnectionType;
私はcan'tそれを機能させる。実行しているとき私は次の出力を得る:
History.user field type must be Output Type but got: undefined
私はそれを解決するために感謝します。
これが役に立つかもしれませんhttps://stackoverflow.com/questions/42498900/graphql-error-undefined-adding-a-relationship/42500391#42500391 –