How to optional pass a required param in update?

[dohaicuong]

Hi team, I'm trying to build a simple crud api.

with the prisma model

model Post {
  id        String   @id @default(uuid())
  title     String
  content   String?
}

the update input

#[derive(Deserialize)]
struct PostUpdateInput {
    title: Option<String>,
    content: Option<String>,
}

How can I optionally update the required title field ?
since post::title::set will only accept String not Option<String>

let updated_post_result = db
        .post()
        .find_unique(post::id::equals(post_id))
        .update(vec![
            // post::title::set(input.title),
            post::content::set(input.content),
        ])
        .exec()
        .await?;

[Brendonovich]

There's many ways to do it, but I would do something like the following:

// Array instead of Vec to avoid memory allocation
let params = [
    // If title is provided, will be Some(SetParam)
    // If title is not provided, will be None
    input.title.map(post::title::set),
    // Will always be Some(SetParam)
    Some(post::content::set(input.content))
];

// Filter array to remove None values and extract value inside Some(_)
let params = params
    .into_iter()
    .filter_map(|p| p)
    .collect();

let updated_post_result = db
    .post()
    .find_unique(post::id::equals(post_id))
    .update(params)
    .exec()
    .await?;