[英]GraphQL - fetch a field conditionally
Imagine that I have a following query (I am using Apollo): 想象一下,我有一个以下查询(我正在使用Apollo):
const userQuery = gql`
query {
user {
id
name
}
}
`;
I want to fetch name
field only if some condition is met (let's say variable shouldFetchName
is true
). 我只想在满足某些条件时获取
name
字段(假设变量shouldFetchName
为true
)。 How should I approach this and what is the best practice? 我应该如何处理这个问题,最佳做法是什么?
You can pass a variable to your query and use a Directive to fetch a field conditionally, like name @include(if: $shouldFetchName)
. 您可以将变量传递给查询并使用指令有条件地获取字段,例如
name @include(if: $shouldFetchName)
。
See the docs for Directives . 请参阅指令文档 。
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