value-not-existing-in-collection.ts
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value-not-existing-in-collection.ts
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	import ValueExistingInCollection from "./value-existing-in-collection";
	import { Context, Field } from "../../../main";

	export default class ValueNotExistingInCollection extends ValueExistingInCollection {
	getTypeName = () => "value-not-existing-in-collection";
	async isProperValue(
	context: Context,
	new_value: unknown,
	old_value: unknown
	) {
	const field = this.getField(context.app);
	await field.checkValue(context, new_value, old_value);
	if (this.include_forbidden) {
	context = new this.app.SuperContext();
	}
	const sealious_response = await field.collection
	.list(context)
	.filter({ [field.name]: new_value })
	.fetch();
	if (!sealious_response.empty) {
	return Field.invalid(
	`Collection ${field.collection.name} already has a record with '${field.name}' set to '${new_value}'`
	);
	}
	return Field.valid();
	}
	}