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Add model association override to @auth/sequelize-adapter #13120

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Add model association override to @auth/sequelize-adapter #13120

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e7fdf03
Add model association override
chipgpt Jul 17, 2025
11f3438
Should not be async
chipgpt Jul 17, 2025
935df4f
Fix associations call
chipgpt Jul 17, 2025
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35 changes: 31 additions & 4 deletions packages/adapter-sequelize/src/index.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -55,14 +55,37 @@ export interface SequelizeAdapterOptions {
Account: ModelCtor<AccountInstance>
Session: ModelCtor<SessionInstance>
VerificationToken: ModelCtor<VerificationTokenInstance>
}>
}>;
/**
* Override the default model {@link https://sequelize.org/docs/v6/core-concepts/assocs/ associations}
*
* Default Associations:
* ```ts
* Account.belongsTo(User, { onDelete: "cascade" })
* Session.belongsTo(User, { onDelete: "cascade" })
* ```
*
* Example:
* ```ts
* (User, Account, Session) => {
* Account.belongsTo(User, { onDelete: "cascade", foreignKey: "userId", as: 'user' });
* Session.belongsTo(User, { onDelete: "cascade", foreignKey: "userId", as: 'user' });
* }
* ```
*/
associations?: (
User: ModelCtor<UserInstance>,
Account: ModelCtor<AccountInstance>,
Session: ModelCtor<SessionInstance>,
VerificationToken: ModelCtor<VerificationTokenInstance>
) => void;
}

export default function SequelizeAdapter(
client: Sequelize,
options?: SequelizeAdapterOptions
): Adapter {
const { models, synchronize = true } = options ?? {}
const { models, synchronize = true, associations } = options ?? {}
const defaultModelOptions = { underscored: true, timestamps: false }
const { User, Account, Session, VerificationToken } = {
User:
Expand Down Expand Up @@ -111,8 +134,12 @@ export default function SequelizeAdapter(
}
}

Account.belongsTo(User, { onDelete: "cascade" })
Session.belongsTo(User, { onDelete: "cascade" })
if (associations) {
associations(User, Account, Session, VerificationToken);
} else {
Account.belongsTo(User, { onDelete: 'cascade' });
Session.belongsTo(User, { onDelete: 'cascade' });
}

return {
async createUser(user) {
Expand Down