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After placing an order, my module calls an external API.

If success from external API, I need to update the order status.

I know how to update status in Magento 1 but how do you do this in Magento 2?

Thanks

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Use \Magento\Sales\Api\OrderRepositoryInterface::get and \Magento\Sales\Api\OrderRepositoryInterface::save. This is public API of sales module and after future Magento releases will not change, so your custom module will not be broken.

Magento 1 style (manipulations with models an resource models directly from third party modules) should not be used in case when suitable public API is available (such classes/methods are marked with @api tag). Such approach will lead to custom module being broken after the next Magento 2 releases.

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  • thanks for your response. Sorry, not sure if I was clear. I'm calling the external API within a custom Magento module (app/code/mymodule) and after return from the call I update the order status in the custom Magento module. With this approach ok to still call \Magento\Framework\App\ObjectManager::getInstance()? Also, after getting instance of OM, I'm using using "load()" method but "save" method is not found. What am I doing wrong. – user20719 Dec 11 '15 at 19:39
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    Object manager should not be used directly, inject dependencies via construct. Also take a look at devdocs.magento.com/guides/v2.0/extension-dev-guide/… – Alex Paliarush Dec 11 '15 at 21:43

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