Update

@strawchemy.pk_update_input builds an input whose id field addresses the record to update; strawchemy.update_by_ids turns it into a mutation field.

Updating by id

@strawchemy.pk_update_input(Post, include=["id", "title"])
class PostUpdateInput: ...


@strawberry.type
class Mutation:
    update_post: PostType = strawchemy.update_by_ids(PostUpdateInput)

mutation {
    updatePost(data: { id: 1, title: "Updated title" }) {
        id
        title
    }
}

Updating several by id

Return list[PostType] instead of PostType, and data takes a list — each item updates the record whose id it carries:

@strawberry.type
class Mutation:
    update_post: PostType = strawchemy.update_by_ids(PostUpdateInput)
    update_posts: list[PostType] = strawchemy.update_by_ids(PostUpdateInput)  

mutation {
    updatePosts(
        data: [
            { id: 1, title: "Updated title" }
            { id: 2, title: "Another title" }
        ]
    ) {
        id
        title
    }
}

Updating by filter

@strawchemy.filter_update_input builds an input whose fields are all optional; strawchemy.update pairs it with a filter input instead, so one data payload applies to every record the filter matches:

@strawchemy.filter_update_input(Post, include=["title"])
class PostPartialInput: ...


@strawchemy.filter(Post, include="all")
class PostFilter: ...


@strawberry.type
class Mutation:
    update_posts_filter: list[PostType] = strawchemy.update(PostPartialInput, PostFilter)

mutation {
    updatePostsFilter(data: { title: "Featured" }, filter: { views: { gt: 100 } }) {
        id
        title
    }
}

The filter takes the same input as a query filter, related records included; the mutation updates each matching record once.