61 lines
2.1 KiB
Markdown
61 lines
2.1 KiB
Markdown
# Account Invoice Triple Discount Readonly
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## Description
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This module fixes a bug in `account_invoice_triple_discount` when combined with `purchase_triple_discount`.
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### Original Problem
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In purchase orders, when configuring a discount in the `discount2` or `discount3` columns, upon saving:
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- All discounts were accumulated in the `discount1` column
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- The `discount2` and `discount3` fields were reset to zero
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This occurred because the original mixin's `write` method always reset `discount2` and `discount3` to 0 when the computed `discount` field was included in the write (which happens when any discount is modified).
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### Solution
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The module overrides the `write` method of `triple.discount.mixin` to:
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1. Detect if `discount1`, `discount2` or `discount3` are being explicitly modified
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2. If there are explicit discounts, ignore the computed `discount` field
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3. If only the `discount` field comes, maintain legacy behavior (map to `discount1` and reset the rest)
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Additionally, it makes the `discount` field (total discount) **readonly** in:
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- Partner form view (`res.partner`)
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- Supplier info in product form (`product.supplierinfo`)
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- Base mixin (`triple.discount.mixin`)
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This forces users to work only with the `discount1`, `discount2` and `discount3` columns, avoiding confusion.
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## Installation
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1. Make sure `account_invoice_triple_discount` and `purchase_triple_discount` are installed
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2. Update the module list
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3. Install `account_invoice_triple_discount_readonly`
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## Usage
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After installation:
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- The total discount field will be readonly and automatically calculated
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- Users must use discount1, discount2, and discount3 fields to set discounts
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- When saving, the individual discount values will be preserved correctly
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## Bug Tracker
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Bugs are tracked on [GitHub Issues](https://github.com/OCA/account-invoicing/issues).
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In case of trouble, please check there if your issue has already been reported.
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## Credits
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### Contributors
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* Coop Makers
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### Maintainers
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This module is maintained by the OCA.
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## Compatibility
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- Odoo 16.0
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- account_invoice_triple_discount
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- purchase_triple_discount
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