toml
lenght_aware_paginator = "0.1.0"
Lenght aware paginator enables you to paginate Diesel queries and have information about the lenght of data being paginated. It will give you total number of items, and last page that you can navigate to and still get some kind of data.
You will only have to provide page and per_page parameters.
```rust use diesel::pg::PgConnection; use diesel::Connection; use diesel::QueryDsl; use lenghtawarepaginator::{LoadPaginated, Response}; use serde::{Deserialize, Serialize};
// user.rs : your model for the table represented in schema.rs
pub struct User { id: i32, email: String, firstname: String, lastname: String, password: String, }
fn getconnection() -> PgConnection { let databaseurl = dotenv::var("DATABASEURL").expect("You have to provide DATABASEURL to run tests");
PgConnection::establish(&database_url)
.unwrap_or_else(|_| panic!("Error connecting to {}", &database_url))
}
fn testormquerypagination() { let connection = getconnection();
// Use `lenght_aware_paginator::LoadPaginated` trait to enable
// using the `load_paginated` method on your query.
// Your query will return `lenght_aware_paginator::Response<T>` struct
let response: Response<User> = schema::users::table
.into_boxed()
.load_paginated(connection, page, per_page)
.unwrap();
assert_eq!(response.page, 1);
assert_eq!(response.per_page, 10);
assert_eq!(response.total, 15);
assert_eq!(response.last_page, 2);
assert_eq!(response.data.len(), 10);
} ```
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