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[IMP] product_pricelist_total_margin: Add margin_type selector (Markup vs Commercial Margin)

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- Add margin_type field to choose between calculation methods:
  * Markup (on cost): PVP = Cost × (1 + markup%)
  * Commercial Margin (on PVP): PVP = Cost / (1 - margin%)
- Update _compute_price() to apply correct formula based on margin_type
- Add safety cap for commercial margin >= 100% (caps at 99%)
- Add detailed logging for both calculation types
- Update views to show margin_type field when use_total_margin is enabled
- Add 2 new tests to validate both calculation methods:
  * test_total_margin_markup_type: validates markup formula
  * test_total_margin_commercial_margin_type: validates commercial margin formula
- All 11 tests passing (9 existing + 2 new)

Example with Commercial Margin:
Base: 4.68€, Total Margin: 20%
- Markup: 4.68 × 1.20 = 5.616€ (margin = 16.67% of PVP)
- Commercial Margin: 4.68 / 0.80 = 5.85€ (margin = 20% of PVP) ✓
This commit is contained in:
snt 2026-02-21 18:54:38 +01:00
parent cafa19ffea
commit 0f239601ce
4 changed files with 107 additions and 11 deletions
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6
product_pricelist_total_margin/views/product_pricelist_item_views.xml
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@ -5,12 +5,16 @@
<field name="model">product.pricelist.item</field>
<field name="inherit_id" ref="product.product_pricelist_item_form_view" />
<field name="arch" type="xml">
<!-- Add use_total_margin field after compute_price -->
<!-- Add use_total_margin and margin_type fields after compute_price -->
<field name="compute_price" position="after">
<field
name="use_total_margin"
invisible="compute_price != 'formula' or base != 'pricelist'"
/>
<field
name="margin_type"
invisible="not use_total_margin"
/>
</field>
</field>
</record>