Empty end date in Coupons display

[soaptray]

When adding in coupons, if you leave the "Date End" field blank, to indicate that you wish to have the coupon never expire, it displays the date as "30/11/-0001" on the administrative panel.

Furthermore, when you go and edit said date, it shows up as "-0001-11-30" in the text box.

[ghost]

I believe this is caused by strtotime() returning false on '0000-00-00'; Changing the coupon.php controller from:

$this->data['date_end'] = date('Y-m-d', strtotime($coupon_info['date_end']));

to:

$this->data['date_end'] = ($coupon_info['date_end'] == '0000-00-00' ? $coupon_info['date_end'] : date('Y-m-d', strtotime($coupon_info['date_end'])));

would get rid of the immediate issue in the coupon form.

[gurubobnz]

Seems to be the same issue if you leave the date available field blank on a product. I didn't look further into after I found that the github trunk wasn't stable (confirmed on another issue).

[opencart]

fixed