Fix a broken caching strategy - #7
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Oct 5, 2018
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Oct 5, 2018
| # the taxjar_line_item is a hash of the API response | ||
| # the line_item is the Spree::LineItem object | ||
| line_item = Spree::LineItem.find(taxjar_line_item.id) | ||
| res = taxjar_line_item.tax_collectable |
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This is where we would always use the last item's tax amount.
Previously, only the tax amount for the last line item would be used to calculate the taxes for an order. For instance if I had an item with a tax of 0.5 and an item with a tax of 1.2. The total tax would have been 2 * 1.2. Now, we cache the whole TaxJar response and properly pick the correct tax amount for each item. The cache key for the TaxJar response should make sure that any update to the items, address, or shipping will result in a new cache key, and thus an new TaxJar call to fetch up-to-date amounts. Signed-off-by: Rémy Coutable <remy@rymai.me>
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Signed-off-by: Rémy Coutable <remy@rymai.me>
Signed-off-by: Rémy Coutable <remy@rymai.me>
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