How to display units for opencart? - opencart

Question

Tell me how to display units for opencart 2.3. When the goods were measured in grams, I simply added the "gr" after the weight was displayed. And now I need to display "liters" as well, as now this crutch has outlived itself. How to address the variable that is responsible for the output of units (gr, kg, l) ??
This is how I used to get weight
<?php if($product['weight']>0) { ?>
<div class="weight">
<?php echo $product['weight']; ?>гр.
</div>
<?php } ?>
In the “popular” module and in the categories and in the product’s card itself, I derive the weight using the code above. But this code does not display the units (grams, kilograms, tons) that I choose in the admin panel when creating the product.
Everything that is highlighted with red colour needs to be displayed automatically from the admin panel.

Answer 1

Based on your example weight php code, I assume you mean how to display the weight with unit in the product page.
The code I am attaching below will help you do that easily.
Open file:
catalog/model/catalog/product.php
Find line:
public function getProduct($product_id) {
Before the line mentioned above add the following code:
public function getProductWeightWithUnit($product_id) {
$product_info = $this->getProduct($product_id);
$query = $this->db->query("SELECT unit FROM `" . DB_PREFIX . "weight_class_description` WHERE
weight_class_id='".$product_info['weight_class_id']."'");
if ($query->num_rows) {
return number_format($product_info['weight'],2) . " " . $query->row['unit'];
} else {
return false;
}
}
Save changes and close the file.
Now, open file:
catalog/controller/product/product.php
Find line:
if ($product_info['minimum']) {
Before the line mentioned above add the following code:
if ($product_info['weight']) {
$data['weight'] = $this->model_catalog_product->getProductWeightWithUnit($this->request->get['product_id']);
} else {
$data['weight'] = false;
}
Now, the backend code is ready. Based on the theme that you use, you need to edit the correct product.tpl file from your theme. For example if you use the default theme, then the file to edit is the following:
catalog/view/theme/default/template/product/product.tpl
Find the line:
<li><?php echo $text_stock; ?> <?php echo $stock; ?></li>
and add the following code after:
<li><?php echo $weight; ?></li>
The above example will show the weight like this: