0.3.0: Connection "default" was not found for creating entities with dataSource

Issue Description

The datasource I’m using:

export const dataSource = new DataSource({
  type: "postgres",
  url: process.env.DATABASE_URL,
  migrations: [path.join(__dirname, "./migrations/*")],
  entities: [path.join(__dirname, "./entities/*")],
  subscribers: [path.join(__dirname, "./subscribers/*")],
  logging: !__prod__,
  migrationsRun: true,
  synchronize: true,
});

and for a Post entity if I do

dataSource.getRepository(Post).create({...someEntity}).save() (or getTreeRepository)

This will complain that there is no default connection, it does not happen for the other basic methods insert, update, delete etc, I think it will have this problem for other methods like remove though, which aren’t sql methods

Expected Behavior

The post should be created and saved properly along with its tree parent/children if it exists, like in 0.2.x versions

Actual Behavior

Connection "default" was not found

Relevant Database Driver(s)

DB Type	Reproducible
aurora-mysql	no
aurora-postgres	no
better-sqlite3	no
cockroachdb	no
cordova	no
expo	no
mongodb	no
mysql	no
nativescript	no
oracle	no
postgres	yes
react-native	no
sap	no
sqlite	no
sqlite-abstract	no
sqljs	no
sqlserver	no

Are you willing to resolve this issue by submitting a Pull Request?

• ✖️ Yes, I have the time, and I know how to start.
• ✖️ Yes, I have the time, but I don’t know how to start. I would need guidance.
• ✅ No, I don’t have the time, but I can support (using donations) development. 5$
• ✖️ No, I don’t have the time and I’m okay to wait for the community / maintainers to resolve this issue.

[tirathsharma098]

okay I think I know what is the problem. For now you need to set YourEntity.useConnection(dataSource) for each entity you have as a hotfix. I’ll push a PR for this issue.

I am using 0.3.10 still facing same issue.

[pleerock]

okay I think I know what is the problem. For now you need to set YourEntity.useConnection(dataSource) for each entity you have as a hotfix. I’ll push a PR for this issue.