Matthieu Bessat
5f45671b74
Allow one to specify that a field of a model is a foreign key. It will generate a bunch of helper methods to query related entities from one entity.
39 lines
830 B
Markdown
39 lines
830 B
Markdown
# Design draft
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This document is at the attention of the developers of sqlxgentools.
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## Implementing basic relation ship
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### Issues
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Problems with Struct non-flexibility
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### Turning the problem around: Views
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### hasMany / belongsTo relationship
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So we can implements a method
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```rs
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use repositories::impls::post::RelationShips;
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let post = PostRepository::new(db).get_one_by_id("id_machin")?;
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post.first_name // OK
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let authors = post.get_authors()? // we need to require the implementation
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```
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.relations() => give you a RelationFetcherBuilder
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.of(entity) => give you a RelationFetcher
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.author
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```rs
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let post_repo = PostRepository::new(db);
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let author: User = post_repo.relations()
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.of(post)
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.author().ok_or(Err)?;
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let comments: Vec<Comment> = post_repo.relations()
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.of(post)
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.comments().ok_or(Err)?;
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```
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