[FIX] Fiscal position tax mapping

It was adding to the product all the right-handed taxes found in the fiscal position, not taking into account the product source tax.

pos_pricelist/static/src/js/db.js

@@ -140,15 +140,24 @@ function pos_pricelist_db(instance, module) {
             });
             return list;
         },
-        find_taxes_by_fiscal_position_id: function (fiscal_position_id) {
+        find_taxes_by_fiscal_position_id: function (fiscal_position_id, taxes_ids) {
             var taxes = [];
+            var found_taxes = {};
             for (var id in this.fiscal_position_tax_by_id) {
                 var tax = this.fiscal_position_tax_by_id[id];
                 if (tax && tax.position_id &&
-                    tax.position_id[0] == fiscal_position_id) {
-                    taxes.push(tax);
+                		tax.position_id[0] == fiscal_position_id &&
+                		taxes_ids.indexOf(tax.tax_src_id[0]) > -1) {
+                    taxes.push(tax.tax_dest_id[0]);
+                    found_taxes[tax.tax_src_id[0]] = true;
                 }
             }
+            for (var i = 0, len = taxes_ids.length; i < len; i++) {
+            	var tax_id = taxes_ids[i];
+            	if (! tax_id in found_taxes) {
+            		taxes.push(tax_id);
+            	}
+            }
             return taxes;
         },
         add_products: function (products) {

pos_pricelist/static/src/js/models.js

@@ -264,38 +264,24 @@ function pos_pricelist_models(instance, module) {
         get_applicable_taxes_for_orderline: function () {
             // find applicable taxes for this product and this customer
             var fiscal_position_taxes = [];
-            var product_taxes = [];
             var product = this.get_product();
-            var partner = this.order ? this.order.get_client() : null;
+            var product_tax_ids = product.taxes_id;
+            var product_taxes = [];
             var taxes = this.pos.taxes;
+            var partner = this.order ? this.order.get_client() : null;
             if (partner && partner.property_account_position) {
-                fiscal_position_taxes =
+            	product_tax_ids =
                     this.pos.db.find_taxes_by_fiscal_position_id(
-                        partner.property_account_position[0]
+                        partner.property_account_position[0], product_tax_ids
                     );
             }
-            for (var i = 0, ilen = fiscal_position_taxes.length;
+            for (var i = 0, ilen = product_tax_ids.length;
                  i < ilen; i++) {
-                var fp_tax = fiscal_position_taxes[i];
-                for (var j = 0, jlen = taxes.length; j < jlen; j++) {
-                    var p_tax = taxes[j];
-                    if (fp_tax && p_tax && fp_tax.tax_src_id[0] === p_tax.id) {
-                        var dest_tax = _.detect(taxes, function (t) {
-                            return t.id === fp_tax.tax_dest_id[0];
-                        });
-                        product_taxes.push(dest_tax);
-                    }
-                }
-            }
-            if (product_taxes.length === 0) {
-                for (var i = 0, ilen = product.taxes_id.length;
-                     i < ilen; i++) {
-                    var _id = product.taxes_id[i];
-                    var p_tax = _.detect(taxes, function (t) {
-                        return t.id === _id;
-                    });
-                    product_taxes.push(p_tax);
-                }
+                var tax_id = product_tax_ids[i];
+                var tax = _.detect(taxes, function (t) {
+                    return t.id === tax_id;
+                });
+                product_taxes.push(tax);
             }
             return product_taxes;
         },