如何根据产品订单更新库存。 CodeIgniter

Question

我是初学者，我需要一些有关查询或代码的帮助。

我有一个 codeigniter 库存系统。 这有产品，产品有一种或多种原材料。

我的问题是如何根据每个订单的产品数量更新原材料库存的代码。

• 客户可以订购一种或多种产品
• 一种产品有一种或多种原材料

这是视图：

 <table class="table table-bordered" id="product_order_info_table"> <thead> <tr> <th style="width:35%">Products <span class="req">*</span></th> <th style="width:15%">Qty (m<sup>3</sup>)</th> <th style="width:20%">Price/m<sup>3</sup></th> <th style="width:20%">Sub-total</th> <th style="width:10%"><button type="button" id="add_row_prod_order" class="btn btn-primary btn-sm"><i class="fa fa-plus"></i></button></th> </tr> </thead> <tbody> <tr id="row_1"> <td> <select class="form-control order_product" data-row-id="order_product_row_1" id="order_product_id_1" name="order_product_id[]" style="width:100%;" onchange="get_product_data(1)" required> <option value="" selected="selected">Please Select Product</option> <?php foreach ($lists_products as $list_product): ?> <option value="<?php echo $list_product->product_id; ?>" ><?php echo $list_product->product_name; ?></option> <?php endforeach?> </select> </td> <td><input type="number" step="any" name="order_product_qty[]" id="qty_1" class="form-control" onkeyup="set_subtotal()" onchange="set_subtotal()" required></td> <td><input type="text" name="order_product_price[]" id="price_1" class="form-control" readonly="readonly" required ></td> <td><input type="text" name="order_product_subtotal[]" id="subtotal_1" class="form-control" readonly="readonly" required> <input type="hidden" name="order_product_name[]" id="prodname_1" class="form-control" readonly="readonly" required></td> <td><button type="button" class="btn btn-danger btn-sm" onclick="removeRow_pr('1')"><i class="fa fa-close"></i></button></td> </tr> </tbody> </table>

这是 Model（为订单 tbl 工作，但更新原材料 tbl 的问题）：

public function add_order_m() {
    $form_fields = array(
        'order_idnumber' => stripslashes($this->input->post('order_idnumber')),
        'order_date' => stripslashes($this->input->post('order_date')),
        'order_duedate' => stripslashes($this->input->post('order_duedate')),
        'user_id' => stripslashes($this->input->post('user_id')),
        'customer_id' => stripslashes($this->input->post('customer_id')),
        'order_deliveryno' => stripslashes($this->input->post('order_deliveryno')),
        'order_deliverycost' => stripslashes($this->input->post('order_deliverycost')),
        'order_totalcost' => stripslashes($this->input->post('order_totalcost')),
        'order_notes' => stripslashes($this->input->post('order_notes')),
        'order_status' => stripslashes($this->input->post('order_status')),
        'order_created' => globTimeNow
    );
    $query = $this->db->insert('orders', $form_fields);

    $count_order_product = count($this->input->post('order_product_id'));
    for ($x = 0; $x < $count_order_product; $x++) {
        $items_orders = array(
            'op_order_id' => stripslashes($this->input->post('order_id')),
            'op_customer_id' => stripslashes($this->input->post('customer_id')),
            'op_product_id' => stripslashes($this->input->post('order_product_id')[$x]),
            'op_product_name' => stripslashes($this->input->post('order_product_name')[$x]),
            'op_product_qty' => stripslashes($this->input->post('order_product_qty')[$x]),
            'op_product_price' => stripslashes($this->input->post('order_product_price')[$x]),
            'op_product_subtotal' => stripslashes($this->input->post('order_product_subtotal')[$x])
        );

        $this->db->insert('orders_products', $items_orders);

        // update rawmats inventory
        //$o_prod_id = $this->input->post('order_product_id')[$x];
        //$o_prod_qty = $this->input->post('order_product_qty')[$x];
    }

    if ($query) {
        return true;
    } else {
        return false;
    }
}