Product price history

[gonandriy]

Can I see product price history, if price have been changed several times?
Is such feature in prestashop, or I heed install some module?

[rocky]

PrestaShop doesn't store the history of prices. I'm not aware of any module that does this. If it is possible to write a module, it would need to add a new table where a new row is created every time a price is changed, preserving the rows with the old prices. It wouldn't work if you have already changed the prices, since it would no history to work with.

[gonandriy]

I agree with you about creating separate table for history of prices. But can I implement this without edit core source?
Must I override Product class (method update) or is some other way?

[rocky]

You could create a module that uses the addproduct, updateproduct and deleteproduct hooks and updates the price history table.

[gonandriy]

I often think about handling events system for prestashop. For example: in ObjectModel class in method update and add (may be in some others) add event dispatcher such as dispatchEvent('add', $classname, $obj)
I think in this way can be implements many extensions without editing core files. This may be very usefull.

I am sorry if my post is off topic

[gonandriy]

Thanks, rocky
I don't know about such hooks. Can you point me where I can read about this, or place of code, where they are implemented.

Thanks in advance!

[rocky]

A hook is basically a placeholder in PrestaShop that modules can use to insert code. I've got a page that lists PrestaShop's hooks and a little information about how to use them here. You can find a tutorial for how to write modules here.

[gonandriy]

I have found and understand my task. My idea have now has been implemented across hooks. Thanks again!