Prevent Accidental Attribute Changes in Laravel Using isDirty() & wasChanged()

isDirty() → Before Save

Checks if attributes were modified before saving.

$product = Product::find(1);
$product->price = 200;
$product->isDirty('price');

👉 Returns:

true

Real Project Example

if ($product->isDirty('price')) {
    // recalculate discount
}

Perfect before calling:

$product->save();

wasChanged() → After Save

Checks what actually changed after saving.

$product->save();
$product->wasChanged('price');

Real Project Example

$product->save();
if ($product->wasChanged('status')) {
    dispatch(new SendStatusNotification());
}

Difference Between Them

isDirty()

👉 Checks pending unsaved changes

wasChanged()

👉 Checks saved changes after persistence

Why This Is Useful

It helps you:

• Avoid unnecessary operations
• Prevent duplicate logic
• Trigger actions only when needed
• Optimize model workflows

When to Use Them

Use:

• isDirty() → before save
• wasChanged() → after save