I ran into a issue where i could add products to cart and i got success message too but the minicart is not updating with the added items.
I got below error in console, I have upgraded the magento to 2.1.0
TypeError: cart is not a function in knockout.js
Did anyone came across this issue.
I have updated the bind events in the minicart file by comparing the base codes, once after update. It worked.
Just compare the minicart.phtml file from theme
app\design\frontend\Theme_namespace\Theme_module\Magento_Checkout\templates\cart
with core template
vendor\magento\module-checkout\view\frontend\templates\cart
In these two files class and bind events may be different in your theme, that is why it is not updating.
If you're working with Porto theme or 3rd theme. You need one more step : replace content.html of porto theme with core content.html file to make it works.
Three steps which I solved this problem:
minicart.phtml file from theme
(app\design\frontend\Theme_namespace\Theme_module\Magento_Checkout\templates\cart)
with core template
(vendor\magento\module-checkout\view\frontend\templates\cart).content.html file from your theme
(app\design\frontend\Theme_namespace\Theme_module\Magento_Checkout\web\template\minicart\content.html)
with core template
(vendor\magento\module-checkout\view\frontend\web\template\minicart\content.html)php magento setup:static-content:deploy
The function cart() was replaced with getCartParam() in 2.1.5 version, so for example, cart().summary_count becomes getCartParam('summary_count')
The function cart() was replaced with getCartParam(), so for example, cart().summary_count becomes getCartParam('summary_count'). You can download the files in this post http://iddema.com/porto-theme-cart-is-not-function/
Files http://iddema.com/wp-content/uploads/2018/01/Smartwave.zip
