0b15f4f5e2
* change: rename `core` crate to `service` in examples * fix(jsonrpsee-example): broken dependency
27 lines
759 B
Rust
27 lines
759 B
Rust
use ::entity::{post, post::Entity as Post};
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use sea_orm::*;
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pub struct Query;
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impl Query {
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pub async fn find_post_by_id(db: &DbConn, id: i32) -> Result<Option<post::Model>, DbErr> {
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Post::find_by_id(id).one(db).await
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}
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/// If ok, returns (post models, num pages).
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pub async fn find_posts_in_page(
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db: &DbConn,
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page: u64,
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posts_per_page: u64,
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) -> Result<(Vec<post::Model>, u64), DbErr> {
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// Setup paginator
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let paginator = Post::find()
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.order_by_asc(post::Column::Id)
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.paginate(db, posts_per_page);
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let num_pages = paginator.num_pages().await?;
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// Fetch paginated posts
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paginator.fetch_page(page - 1).await.map(|p| (p, num_pages))
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}
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}
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