Module eager_loading 

Eager loading utilities for avoiding N+1 query problems

Provides batch loading of related entities to avoid the N+1 query problem.

Example

use ferro_rs::database::BatchLoad;

// Load animals with their shelter in 2 queries instead of N+1
let animals = Animal::query().all().await?;
let shelters = Shelter::batch_load(animals.iter().map(|a| a.shelter_id)).await?;

// Access related data
for animal in &animals {
    if let Some(shelter) = shelters.get(&animal.shelter_id) {
        println!("{} is at {}", animal.name, shelter.name);
    }
}

Macros

impl_batch_load

Macro to implement BatchLoad for an entity with a primary key

impl_batch_load_many

Macro to implement BatchLoadMany for has_many relationships

Traits

BatchLoad

Trait for batch loading entities by their primary key

BatchLoadMany

Trait for loading has_many relationships in batch

Functions

batch_load_by_id

Helper function to batch load entities by primary key

batch_load_has_many

Helper function to batch load has_many relations