Custom decorator?

[leesiongchan]

Issue type:

[ ] question
[ ] bug report
[x] feature request
[ ] documentation issue

Database system/driver:

[ ] cordova
[ ] mongodb
[ ] mssql
[ ] mysql / mariadb
[ ] oracle
[x] postgres
[ ] sqlite
[ ] sqljs
[ ] react-native
[ ] expo

TypeORM version:

[x] latest
[ ] @next
[ ] 0.x.x (or put your version here)

Steps to reproduce or a small repository showing the problem:

How if I want to create a custom decorator say for example a blameable decorator?

[Kononnable]

I don't see how creating custom decorator is related to ORM. Could you describe your issue(if it is related to typeorm)?

[leesiongchan]

I mean a column decorator, like @CreateDateColumn or @UpdateDateColumn, what if I want to create a custom column decorator like @CreateCreatorColumn or @UpdateCreatorColumn? Or can we have an example in doc?

[Kononnable]

It really depends on what you want to do. Look at existing decorator - it just stores some metadata which is used later in ORM logic. You can use e.g. custom subscriber to act on yours metadata.

typeorm/src/decorator/columns/UpdateDateColumn.ts

Lines 8 to 18 in bcd5d82

	export function UpdateDateColumn(options?: ColumnOptions): Function {
	return function (object: Object, propertyName: string) {
	getMetadataArgsStorage().columns.push({
	target: object.constructor,
	propertyName: propertyName,
	mode: "updateDate",
	options: options ? options : {}
	} as ColumnMetadataArgs);
	};
	}

[leesiongchan]

Yea, but it doesn't seem to have the flexibility to add your custom metadata, ORM later uses mode to determine the logic I believe.