[Administration] Produits > prix spécifiques : calcul des prix via un champs de remises en pourcentage #1156

backend/views/product/update/prices/_form.php

         <?= $form->field($model, 'price', [
                 'template' => '
                         <div class="row">
-                        <div class="col-xs-6">
+                        <div class="col-xs-4">
+                            <label for="reduction-increase-percent" class="control-label">Réduction / augmentation</label>
+                            <div class="input-group">
+                            <input type="text" id="reduction-increase-percent" class="form-control" name="" value="" data-price-base="'.$productManager->getPrice($modelProduct).'"> 
+                            <span class="input-group-addon">%</span>
+                            </div>
+                        </div>
+                        <div class="col-xs-4">
                             <label for="product-price" class="control-label without-tax">Prix ('. $productManager->strUnit($productManager->getRefUnit($modelProduct->unit), 'wording_unit').') HT</label>
                             <div class="input-group">
                             {input} <span class="input-group-addon"><span class="glyphicon glyphicon-euro"></span></span>
                             </div>
                         </div>
-                        <div class="col-xs-6">
+                        <div class="col-xs-4">
                             <label for="productprice-price-with-tax" class="control-label with-tax">Prix ('. $productManager->strUnit($productManager->getRefUnit($modelProduct->unit), 'wording_unit').') TTC</label>
                             <div class="input-group">
                                 <input type="text" id="productprice-price-with-tax" class="form-control" name="" value="" data-tax-rate-value="'.$taxRateValue.'">

backend/web/js/backend.js

         opendistrib_product_prices_event_price_with_tax();
         $('#productprice-price').change(opendistrib_product_prices_event_price_with_tax);
         $('#productprice-price-with-tax').change(opendistrib_product_prices_event_price);
+        $('#reduction-increase-percent').change(function() {
+            opendistrib_product_prices_event_reduction_increase();
+        });
     }
 }
 
         $('#productprice-price-with-tax').val(getPriceWithTax(price, taxRateValue));
         // formattage
         $('#productprice-price').val(parseFloat(price).toFixed(5));
+
+        opendistrib_product_prices_update_reduction_increase();
     }
 }
 
         $('#productprice-price').val(getPrice(priceWithTax, taxRateValue));
         // formattage
         $('#productprice-price-with-tax').val(parseFloat(priceWithTax).toFixed(2));
+
+        opendistrib_product_prices_update_reduction_increase();
+    }
+}
+function opendistrib_product_prices_update_reduction_increase() {
+    var productPriceBase = $('#reduction-increase-percent').data('price-base');
+    var productPriceSpecific = $('#productprice-price').val().replace(',', '.');
+    var reductionIncreasePercent = (productPriceSpecific / productPriceBase) * 100 - 100;
+    $('#reduction-increase-percent').val(parseFloat(reductionIncreasePercent).toFixed(5));
+}
+
+function opendistrib_product_prices_event_reduction_increase() {
+    var productPriceBase = $('#reduction-increase-percent').data('price-base');
+    var reductionIncreasePercent = $('#reduction-increase-percent').val();
+    if(reductionIncreasePercent) {
+        var newPrice = productPriceBase + productPriceBase * (reductionIncreasePercent / 100);
+        $('#productprice-price').val(parseFloat(newPrice).toFixed(5));
+        opendistrib_product_prices_event_price_with_tax();
     }
 }