# Product Main Seller

## Summary

Adds a "Main Vendor" field to products that automatically tracks the primary supplier based on supplierinfo sequence.

## Features

- **Automatic Main Vendor**: Computed field showing the primary supplier
- **Based on Sequence**: Uses the supplierinfo with the lowest sequence number
- **Visible in Views**: Shows in product form and tree views
- **Searchable**: Can search and filter products by main vendor
- **Related Fields**: Access to vendor name and reference

## Technical Details

### Models Extended

- `product.template`: Main product template
- `product.product`: Product variants

### Fields Added

- `main_seller_id` (Many2one → res.partner, computed, stored)
  - The main vendor for this product
  - Computed from `seller_ids` with lowest sequence
  - Stored for performance
  - Searchable and filterable

### Computation Logic

The main vendor is determined by:
1. Looking at all supplierinfo records (`seller_ids`)
2. Filtering for valid suppliers (active partners)
3. Selecting the one with the **lowest sequence** number
4. If no suppliers, returns empty

## Dependencies

- `purchase` (Odoo core)

## Installation

```bash
docker-compose exec odoo odoo -d odoo -u product_main_seller --stop-after-init
```

## Usage

## Usage

### Viewing Main Vendor

1. Open a product form (Products > Products > [Product])
2. See "Main Vendor" field (usually in Purchase tab)
3. Field is automatically computed from vendor list

### Changing Main Vendor

To change the main vendor:
1. Go to product form > Purchase tab
2. Edit the vendor list (`seller_ids`)
3. Change the sequence numbers (lower = more priority)
4. Save - the "Main Vendor" will update automatically

### Searching by Vendor

```python
# Find all products from a specific vendor
products = self.env['product.template'].search([
    ('main_seller_id', '=', vendor_id)
])
```

## Use Cases in Kidekoop

This module is critical for:
- Vendor performance analysis
- Purchase order management
- Inventory planning by supplier
- Default supplier selection in purchase workflows

## Views Modified

- Product Template Form View
- Product Template Tree View
- Product Variant Form View

## Translations

- ✅ Spanish (es)
- ✅ Euskera (eu)

Located in `i18n/` directory.

---

**Version**: 18.0.1.0.0
**Category**: Purchase
**License**: AGPL-3
