How to check every row of a table to continue my loop? - php

Question

I'm stuck with this problem because my loop stops at only the first row of the table. Every customer has a set budget for purchasing products which resets every week to purchase items if ever the qty is not equal to 0. The admin is the one who can process the order for the customer. Customers have a budget = 1000 from customers table. Then customer_product table has the qty of products to be purchased by the customer. For example product_id = 1 has a price of 20 and has the qty of 10 so 20 x 10 = 200. Budget would be deducted by 200, remaining budget would be 800 after looping through the first row. Now i want to continue looping through the 2nd row with the remaining 800 budget instead of the 1000. It continues to loop as long as he still has a budget.
Database tables
customer
id | name | budget
customer_product
product_id | cus_id | qty | status
products
id | name | price
Controller
public function processOrder($id)
{
$customers = Customer::find($id);
foreach ($customers->products as $product)
{
$status = $product->pivot->status;
$budget = $product-budget;
$price = $product->price;
$qty = $product->pivot->qty;
if ($status == 1) {
$i = $qty;
for ($i; $i > 0; $i--) {
if ($budget < 1) {
break;
} else {
$budget-=$price;
}
}
};
echo "Status 0";
}
}
Routes
Route::get('processOrder/{id}', ['as' => 'processOrder',
'uses' => 'AdminController#processOrder']);
I can process the first row of the table and when it reaches 0 qty with my for loop, it stops there and doesn't continue to process the next row even though his budget is still enough to purchase products from the next row. Can someone please help me with this problem?

Answer 1

You should save the customer's budget before going into the loop, then update it while you iterate through the products.
public function processOrder($id)
{
$customer = Customer::find($id);
$remainingBudget = $customer->budget;
foreach ($customer->products as $product) {
// Calculate the total price to get the desired qty of product
$cost = $product->price * $product->pivot->qty;
// If we have enough remaining budget go ahead with the purchase
if ($product->pivot->status == 1 && $remainingBudget >= $cost) {
// Decrease the remaining budget
$remainingBudget -= $cost;
}
}
}

Answer 2

You are forcing the loop to break at the very first index
echo "Status 0"; break;
So remove break; at the end.
update:
foreach($customers->products as $product){
$status = $product->pivot->status;
$budget = $product-budget;
$price = $product->price;
$qty = $product->pivot->qty;
if($status == 1){
do {
if($budget < 1) break;
$budget -=$price;
} while ($qty != 0);
}
}