Module patch 

Query patchers for list/detail layers.

Query patchers

QueryPatcher modifies SeaORM selects before list or detail layers execute. Use them for:

• Eager-loading relations (avoid N+1 queries)
• Tenant or account scoping (WHERE account_id = ?)
• Full-text search filters from query params
• Custom sort orders

use lariv_rs::layers::QueryPatcher;
use sea_orm::{ColumnTrait, QueryFilter, QuerySelect};

struct PublishedOnly;

impl QueryPatcher<BlogPostEntity> for PublishedOnly {
    fn patch(&self, query: sea_orm::Select<BlogPostEntity>) -> sea_orm::Select<BlogPostEntity> {
        query.filter(blog_post::Column::Published.eq(true))
    }
}

// Attach to DetailLayer via query_patchers field

Fold multiple patchers as an HList with FoldQueryPatchers.

Built-in patterns

The blog plugin demonstrates tag hierarchy filters; the users plugin applies role-based query scoping on list views. Browse those plugins’ layers.rs files for real patcher impls.