In the checkout process, when a user adds a new address, the system needs to automatically set that address as the default address (either shipping or billing) based on the context. This ensures that the newly added address is used for further transactions unless the user selects another one.
We will extend the existing OrderWizardModuleAddressShipping (or OrderWizardModuleAddress) class to capture address selection events and automatically mark a new address as the default address.
- Override the Initialize Method:
The initialize method is the starting point when the address module is initialized. We extend this method to add our custom functionality.
_.extend(OrderWizardModuleAddressShipping.prototype, {
initialize: function () {
// Call the parent class’s initialize method
OrderWizardModuleAddressShipping.__super__.initialize.apply(this, arguments);
// Unbind any previous events
Backbone.Events.off(“selectionnew”);
// Bind the ‘selectionnew’ event to trigger the selectionnew method
Backbone.Events.on(“selectionnew”, this.selectionnew, this);
// Handle modal events (for the modal views in the checkout flow)
this.handleModalEvents();
},
});
In the code above:
- initialize() method calls the parent class’s initialize() method to retain default behaviors.
- The Backbone.Events.off(“selectionnew”) removes any pre-existing listeners.
- The Backbone.Events.on(“selectionnew”, this.selectionnew, this) binds a new listener to the selectionnew event.
- Selection Logic for New Address:
The selectionnew method handles the logic when a new address is selected. Here, we ensure that if a new address is added, it is automatically selected as the default address.
selectionnew: function (addressId) {
try {
if (!addressId) {
console.warn(“selectionnew: No addressId provided.”);
return;
}
var element = $(‘[data-action=”select”][data-id=”‘ + addressId + ‘”]’);
if (element.length) {
element.trigger(“click”); // Trigger click event to select the address
console.log(“selectionnew: Click triggered for addressId:”, addressId);
} else {
console.warn(“selectionnew: Element not found for addressId:”, addressId);
}
// Re-render the view to update the UI with the newly selected address
this.render();
} catch (err) {
console.error(“selectionnew: Unexpected error occurred.”, err);
}
},
- This method receives the addressId of the new address that the user has added.
- If the addressId is valid, it triggers the click event to simulate the user selecting the address.
- The render() function is then called to update the UI, ensuring that the new default address appears in the address list.
- Handling Modal Events (Optional):
If the checkout flow uses modals for editing or selecting addresses, it’s important to ensure that modal events are handled properly.
this.handleModalEvents();
This method is responsible for handling any modal-specific actions such as opening, closing, or updating the modal content. This step is usually necessary when working with modals for user interactions during checkout.
- Setting the Default Address During Save:
For new addresses, you must ensure that the address is set as default when saved. This is done by setting the defaultshipping or defaultbilling flags based on the context.
Example (Inside AddressModel.prototype.save method):
if (this.newaddress) {
this.set({
defaultshipping: isShipping, // Mark as default shipping if it’s a new shipping address
defaultbilling: isBilling, // Mark as default billing if it’s a new billing address
});
}
The code above checks if the address is new and sets it as the default shipping or billing address accordingly.
- Triggering Address Saved Event:
After successfully saving the address, the system triggers an event to notify other components about the saved address. This ensures that the new default address is propagated throughout the checkout system.
Backbone.Events.trigger(“address:saved”, {
addressId,
address: savedAddress,
isBilling,
isShipping,
});
- address:saved event is triggered to notify the rest of the application that the address has been saved successfully and that it is now the default.
Summary:
- Extend the initialize() method to bind the selectionnew event to handle new address selection.
- Use selectionnew() to trigger the click event on the newly added address and re-render the view.
- Set the new address as default by modifying the AddressModel.save method to mark the new address as the default address for shipping or billing.
- Trigger address:saved event after successfully saving the address to ensure that the changes are reflected across the system.