Lucien Cartier-Tilet
bca0619f30
Currently, all methods declared in the Georm trait are available. If a struct has an ID pointing towards another entity, the user can create a get method to get the entity pointed at from the database too (local one-to-one relationship). I still need to implement remote one-to-one relationships (one-to-one relationships when the ID of the remote object is not available locally). I still need to also test and debug one-to-many relationships (ID of the remote entiies not available locally) and many-to-many relationships (declared in a dedicated table). For now, IDs in all cases are simple types recognized by SQLx that are not arrays. Options are only supported when explicitely specified for one-to-one relationships.
64 lines
1.5 KiB
Rust
64 lines
1.5 KiB
Rust
use georm::Georm;
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#[derive(Debug, sqlx::FromRow, Georm, PartialEq, Eq, Default)]
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#[georm(table = "biographies")]
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pub struct Biography {
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#[georm(id)]
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pub id: i32,
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pub content: String,
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}
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#[derive(Debug, sqlx::FromRow, Georm, PartialEq, Eq, Default)]
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#[georm(table = "authors")]
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pub struct Author {
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#[georm(id)]
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pub id: i32,
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pub name: String,
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#[georm(relation = {entity = Biography, table = "biographies", name = "biography", nullable = true})]
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pub biography_id: Option<i32>,
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}
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impl PartialOrd for Author {
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fn partial_cmp(&self, other: &Self) -> Option<std::cmp::Ordering> {
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Some(self.id.cmp(&other.id))
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}
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}
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impl Ord for Author {
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fn cmp(&self, other: &Self) -> std::cmp::Ordering {
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self.id.cmp(&other.id)
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}
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}
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#[derive(Debug, sqlx::FromRow, Georm, PartialEq, Eq, Default)]
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#[georm(table = "books")]
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pub struct Book {
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#[georm(id)]
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ident: i32,
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title: String,
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#[georm(relation = {entity = Author, table = "authors", name = "author"})]
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author_id: i32,
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}
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impl PartialOrd for Book {
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fn partial_cmp(&self, other: &Self) -> Option<std::cmp::Ordering> {
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Some(self.ident.cmp(&other.ident))
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}
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}
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impl Ord for Book {
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fn cmp(&self, other: &Self) -> std::cmp::Ordering {
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self.ident.cmp(&other.ident)
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}
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}
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#[derive(Debug, sqlx::FromRow, Georm, PartialEq, Eq)]
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#[georm(table = "reviews")]
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pub struct Review {
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#[georm(id)]
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pub id: i32,
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#[georm(relation = {entity = Book, table = "books", remote_id = "ident", name = "book"})]
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pub book_id: i32,
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pub review: String
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}
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