toasty_driver_integration_suite/scenarios/
user_comment_article.rs

1use crate::prelude::*;
2
3scenario! {
4    #![id(ID)]
5
6    #[derive(Debug, toasty::Model)]
7    struct User {
8        #[key]
9        #[auto]
10        id: ID,
11
12        name: String,
13
14        #[has_many]
15        comments: toasty::Deferred<Vec<Comment>>,
16
17        // User → comments → article
18        #[has_many(via = comments.article)]
19        commented_articles: toasty::Deferred<Vec<Article>>,
20
21        // User → comments → article → title (scalar terminal)
22        #[has_many(via = comments.article.title)]
23        commented_article_titles: toasty::Deferred<Vec<String>>,
24
25        // User → comments → body: a 2-step scalar terminal. The terminal field
26        // sits directly on the first relation's target, so the relation chain is
27        // a single step — the minimal scalar-via walk.
28        #[has_many(via = comments.body)]
29        comment_bodies: toasty::Deferred<Vec<String>>,
30    }
31
32    #[derive(Debug, toasty::Model)]
33    struct Article {
34        #[key]
35        #[auto]
36        id: ID,
37
38        title: String,
39
40        #[has_many]
41        comments: toasty::Deferred<Vec<Comment>>,
42    }
43
44    #[derive(Debug, toasty::Model)]
45    struct Comment {
46        #[key]
47        #[auto]
48        id: ID,
49
50        body: String,
51
52        #[index]
53        user_id: ID,
54
55        #[belongs_to(key = user_id, references = id)]
56        user: toasty::Deferred<User>,
57
58        #[index]
59        article_id: ID,
60
61        #[belongs_to(key = article_id, references = id)]
62        article: toasty::Deferred<Article>,
63    }
64
65    async fn setup(test: &mut Test) -> toasty::Db {
66        test.setup_db(models!(User, Article, Comment)).await
67    }
68}

toasty_driver_integration_suite/scenarios/user_comment_article.rs

toasty_driver_integration_suite/scenarios/
user_comment_article.rs