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Improve one_to_many example

This commit is contained in:
vabenil 2022-11-05 14:17:47 +02:00
parent f070c08ff8
commit d252b39a6e
1 changed files with 12 additions and 7 deletions
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19
database_generation.d
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@ -833,19 +833,24 @@ string toFieldName(T)(string s, bool isPlural = false)
}
/++
generates get functions for a one-to-many relationship
generates get functions for a one-to-many relationship with the form
`T2 get_<t2>(T1 row, Database db)` and
`TabResultSet!T1 get_<t1>(T2 row, Database db)`
Example:
```d
Struct Role { int id; }
struct User {
@ForeignKey!(Role.id, "") int role_id;
}
mixin(one_to_many!(User.role_id), "role", "users");
/*
this will generate the following functions
Role get_role(User role, Database db) {...}
TabResultSet!User get_users(Role row, Database db) {...}
*/
mixin(one_to_many!(User.role_id, "role", "users"));
void main()
{
Database db = ...
User user = db.find!User(1);
Role role = user.get_role(db);
auto users = role.get_users(db);
}
```
if t2 or t1 are set as null they will be infered from either
the `DBName` attribute or from the name of the the Table