support to change trackInventory for channel

[choim4389]

Is your feature request related to a problem? Please describe.

StockLevel can be set differently for each channel, but trackInventory can only be set globally, which is inconvenient.
For example, if you want to track inventory only in a specific store, there is currently no way to do so.

Describe the solution you'd like
To move trackInventory to stock_level from product_variant can be a solution, but I have no idea about side effects.

Describe alternatives you've considered

Additional context

[michaelbromley]

This is actually implemented at the data-model level:

vendure/packages/core/src/entity/channel/channel.entity.ts

Lines 97 to 105 in bdf2329

	trackInventory: boolean;
	/**
	* @description
	* Specifies the value of stockOnHand at which a given ProductVariant is considered
	* out of stock.
	*/
	@Column({ default: 0 })
	outOfStockThreshold: number;

It is just not currently used in the actual business logic. This means we can add support for this without requiring a breaking DB schema change.

[choim4389]

I think there was some confusion with my question.
If you only use the channel's trackInventory, can't you still set it for each variant?

[michaelbromley]

The way it will work in a future version will be like this:

global -> channel -> variant

So the trackInventory can be set at those 3 levels.

• If set on the variant, that takes precedent
• Otherwise, it will use the setting for the given Channel
• Otherwise, it will use the global setting.

From what I understand, you are asking for something slightly different: that the trackInventory is associated with a given StockLocation. That's not something that can be supported by the current data model, but I can see how this may be a desirable feature to consider.

[choim4389]

The way it will work in a future version will be like this:

global -> channel -> variant

So the trackInventory can be set at those 3 levels.

• If set on the variant, that takes precedent
• Otherwise, it will use the setting for the given Channel
• Otherwise, it will use the global setting.

If I understand correctly, variant is ChannelAware. so, variant assigned to multiple channel will have multiple trackInventory. is this right?

[michaelbromley]

Yes, variants are channel aware. So in future, once the channel-level trackInventory setting is actually being used, then yes. Currently that is not the case.