lengthawarepaginator

toml length_aware_paginator = "1.0.0"

Length aware paginator enables you to paginate Diesel queries and have information about the length 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 lengthawarepaginator::{Paginate, Response}; use serde::{Deserialize, Serialize};

/// Get the database connection /// panics if no DATABASEURL is defined in the env or if the db is unreachable fn getconnection() -> PgConnection { let databaseurl = dotenv::var("DATABASEURL").expect("You have to provide DATABASE_URL to run tests");

PgConnection::establish(&database_url)
    .unwrap_or_else(|_| panic!("Error connecting to {}", &database_url))

}

// schema.rs : autogenerated by diesel after running migration table! { users (id) { id -> Int4, email -> Varchar, firstname -> Varchar, lastname -> Varchar, password -> Varchar, } }

// user.rs : your model for the table represented in schema.rs

[derive(Queryable, Deserialize, Serialize)]

pub struct User { id: i32, email: String, firstname: String, lastname: String, password: String, }

[test]

fn testormquerypagination() { let mut connection = getconnection();

// Use `length_aware_paginator::LoadPaginated` trait to enable
// using the `load_paginated` method on your query.
// Your query will return `length_aware_paginator::Response<T>` struct
let response: Response<User> = schema::users::table
    .into_boxed()
    .page(Some(1))
    .per_page(Some(10))
    .load_paginated(&mut connection)
    .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);

} ```

License

Licensed under either of

• Apache License, Version 2.0, (LICENSE-APACHE or https://www.apache.org/licenses/LICENSE-2.0)
• MIT license (LICENSE-MIT or https://opensource.org/licenses/MIT)

at your option.

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.