我正在努力使用文档后面的join-monster库实现应用层分页:http://join-monster.readthedocs.io/en/latest/pagination/
所有示例都是关于从特定节点分页关系,但我想从RootQuery中分页。我的RootQuery看起来像这样:
const RootQuery = new GraphQLObjectType({
name: "Query",
articles: {
type: new GraphQLList(ArticleType),
args: {},
resolve(parentValue, args, context, resolveInfo) {
return joinMonster(
resolveInfo,
{},
sql => {
return knex.raw(sql).then(result => {
return result[0];
});
},
{ dialect: "mysql" }
);
}
}
})
});
我想对文章字段进行分页,因此我尝试将其转换为连接:
const RootQuery = new GraphQLObjectType({
name: "Query",
fields: () => ({
articles: {
type: ArticleConnection,
args: gqlUtils.connectionArgs,
resolve(parentValue, args, context, resolveInfo) {
return joinMonster(
resolveInfo,
{},
sql => {
return knex.raw(sql).then(result => {
return gqlUtils.connectionFromArray(result[0], args);
});
},
{ dialect: "mysql" }
);
}
}
})
});
但是当针对它运行查询时,我收到错误
函数必须返回/解析每个对象所在的对象数组 结果集中的一行。取而代之的是{edge ...
现在我被卡住了。我是以错误的方式接近它吗?我该怎么办呢?
感谢。
答案 0 :(得分:1)
这几乎是正确的,问题是我在将数据发送到joinMonster之前调用了“connectionFromArray”,显然它必须在之后调用:
const RootQuery = new GraphQLObjectType({
name: "Query",
fields: () => ({
articles: {
type: ArticleConnection,
args: connectionArgs,
resolve(parentValue, args, context, resolveInfo) {
return joinMonster(
resolveInfo,
{},
sql => {
return knex.raw(sql).then(result => {
return result[0];
});
},
{ dialect: "mysql" }
).then(data => connectionFromArray(data, args));
}
}
})
});