Enable Customers to Upload a File With Their Order Shopify
You want to requite your customers the ability to upload files when they add a product to their shopping cart.
This functionality tin can exist required, for example, if you want to offer personalized products on Shopify or if you need some boosted files to fulfill an society.
We are going to show y'all two variants on how you tin add a file upload option to your Shopify production pages.
Variant i - Implement it yourself
Shopify does support file upload when adding an detail to the cart. To make use of the functionality, we accept to extend our theme with some additional code to display a file upload form detail and make sure that the file is uploaded when a customer clicks the "add to cart" button. The implementation details depend on the specific theme and how the products are added to the cart.
If your theme has an AJAX cart implementation, it is not guaranteed to work out of the box.
We are going to bear witness you how you can implement a file upload on the Shopify Debut theme, including AJAX cart support!
Variant ii - Using a Shopify App
There are diverse Shopify apps that allow you lot to add a file upload grade on your product. Nosotros've developed a new app that solves a lot of bug similar file validations and custom CSS for yous. By installing the app, you do not accept to brand whatever theme modifications to enable file uploads on your production pages.
Yous could argue that the whole reason that we wrote this blog postal service is to tell you about the app! Only seriously, you could build it yourself, and nosotros are going to prove you how, have a basic file upload that works merely with your electric current theme, or you can use the app, which provides a beautiful widget with a lot of customization options.
The app has a gratuitous program that allows an unlimited number of uploads. You can discover information technology on the Shopify App Store.
You can skip ahead to see the app in action.
Implementing file upload on Shopify Debut theme
The post-obit instructions are specific to the Debut theme on Shopify.
Tough the general setup can also be practical to other themes.
Creating a custom production template
To exist able to add a file upload pick to specific products on our store, nosotros start create a new production template file and call it "product.upload.liquid".
If you exercise not know how to add a new template, you lot tin follow this Shopify assist doc Create alternate templates.
Adjacent, nosotros copy the code of the default "templates/production. liquid" into the new custom template. (The theme editor does this automatically) After the template is saved, we tin can configure it on a product by selecting it on the product page in the Shopify admin under "Theme templates" in the bottom right corner.
Creating a custom section
Our template file currently includes a section called "product-template." This file is located in the "sections" folder, and it contains the central office of the product page. To implement our new file upload feature, we best create a new section and call information technology "product-upload-template.liquid". Adjacent, we again copy the code of the default "sections/production-template.liquid" into the new custom section. Now we can update our new "production.upload.liquid" template to point to our new section.
{% section 'product-upload-shopify-template' %} Shopify cart items properties
To store the link of the uploaded file somewhere on the cart, we can use custom cart line item backdrop.
When a customer adds a product to cart , a new cart line_item object is added to the cart.items array. The line_item object contains all the necessary information about the called product, like product variant and price.
The line_item.backdrop aspect is an array that can store additional custom information. These properties are saved when an order is created. That makes them a great place to store the link to the uploaded file.
Creating the file input element
To create a custom line_item.properties attribute when adding a production to cart, nosotros create an additional form field on the production form. In "sections/product-upload-template.liquid" we add together the following HTML afterwards to the product course later the variant pick:
{% form 'production', product, class:form_classes, novalidate: 'novalidate', information-product-course: '' %} ... {% annotate %} Custom form field to add together a line_item.properties entry with the name "upload", containing the link to the uploaded file. {% endcomment %} <div class="product-form__item product-form__item--upload"> <characterization for="upload">Upload</characterization> <input required class="required" id="upload" type="file" name="properties[upload]" course="product-form__input"> </div> ... {% endform %} The name of the property is gear up via the name="properties[...]" aspect of the input tag. You tin choose a different holding name that makes sense for your apply case.
Subsequently we saved the section file and our theme is updated, we can navigate to the production with the template and see a file upload input form item appear above the add together to cart push.
If you don't see the upload item on your product page, check the previous steps and brand sure that you've selected the new template on the product configuration page.
Making the cart upload work
When now tin select a file and add the production to cart. Nosotros tin can verify that the production was successfully added to the cart, merely the "upload" belongings is missing on the line_item.backdrop.
The reason information technology is not working out of the box is that the Debut theme default cart implementation is using AJAX to phone call the add together.js API to add line_items to the cart. Unfortunately, this skips the file upload procedure entirely.
We have two options to fix this.
Option 1 - Disable Ajax cart
The Debut theme settings incorporate a property to enable/disable the ajax cart.
In the Shopify Admin Themes section, click on "Customize" on your current Debut based theme. Navigate to the "Theme settings" tab. Click on the "Add to cart notification" section.
Uncheck the checkbox "Bear witness notification when item is added to cart".
Make sure that you save the theme settings.
The setting is reflected as the property "enable_ajax" in the config file "config/settings_data.json".
When we now try once again and select a file and add it to cart, we should see an upload property displayed on the cart line_item on the cart page.
The downside of this approach is that now all of our other products tin can not make use of the cart ajax functionality, especially the cart popup in the summit right is not shown anymore. This causes an overall worse user experience.
Choice 2 - Modify theme.js to back up AJAX file uploads
If y'all disabled the "enable_ajax" setting from the starting time option. Enable it again. We know you want to have that nice cart popup functionality dorsum!
We have to change some of the theme's javascript code to brand the ajax cart support file uploads.
Open the "assets/theme.js" file and search for the "_addItemToCart" function. Rename the function, add a suffix "_original" to be able to restore to the original function if needed.
_addItemToCart_original: role(information) { ... } Next, add together we add our new implementation beneath the original ane:
// NEW: implementation to allow ajax file uploads & required checks _addItemToCart: function($form) { // You need to use standard javascript object hither // create form data with all the fields from the form // FormData is >=IE10 var formData = new FormData($form[0]); var params = { type: 'Post', contentType: fake, // NEEDED, DON'T OMIT THIS (requires jQuery 1.6+) processData: simulated, // NEEDED, DON'T OMIT THIS url: '/cart/add.js', data: formData, dataType: 'json', success: role(item) { this._hideErrorMessage(); this._setupCartPopup(particular); }.bind(this), error: office(response) { this.$previouslyFocusedElement.focus(); var errorMessage = response.responseJSON ? response.responseJSON.description : theme.strings.cartError; this._showErrorMessage(errorMessage); this._handleButtonLoadingState(fake); }.demark(this) }; // execute ajax add to cart $.ajax(params); }, Our new function makes use of the FormData Javascript object to parse and send all form fields, including our new upload field. As commented in the code, the FormData only supports IE >= 10.
We so pass the formData every bit the data parameter to the jQuery.ajax() method. The success and error handlers are the same as in the original function.
If nosotros now try again and select a file and add together it to cart, we should run across the cart popup with our upload belongings displayed on the cart line_item in the top right corner.
Making the file upload required
As yous may have noticed, nosotros set the "required" aspect on the upload input field. But when we click on "Add together to cart" without selecting a file, the product is still added to cart! The reason for this is again the Ajax cart skips the browser native form validation. We have to implement it ourselves in the "_addItemToCart" function.
Nosotros add the following code to cheque if all the inputs that are marked as required have a value. If not, we evidence an error on the page and skip adding the production to the cart.
_addItemToCart: function($form) { var valid = truthful; // required fields validation $.each($form.find('input.required'), function (index, element) { if(!$(element).val()){ valid = fake; } }); if(!valid){ this._showErrorMessage('missing required fields'); this._handleButtonLoadingState(simulated); return; } ... } If we at present effort to add a production to the cart without selecting a file start, nosotros see an error message displayed on the page.
Using the Upload-Lift App
If you don't want to implement the upload functionality yourself, or if you lot want a more customizable and more pleasing upload widget, then using an app like Upload-Lift is the right way to go. You can install it directly from the Shopify App Store.
Creating a file upload field
After you have installed the app, you will see a UI to create a new upload field. On the UI, we tin configure the grade input settings like required and the name of the properties. We can also set up the look and feel of the widget to match with our theme colors.
In the display settings section, nosotros can configure the field to exist shown on a specific production. The app besides supports complex conditions to display a single upload field on multiple product pages. If we would desire to place the widget on a specific place on the page, we could likewise provide a CSS selector. The default location is at the finish of the product form.
Testing the file upload
When we visit our product page, we should encounter the upload widget shown correct above the "Add to cart" button.
You lot can check a alive example on this product page: personalized-canvas
Seeing the uploaded files
One prissy additional characteristic of the app is the ability to come across the uploaded files straight in the app.
You can download the files at any time. If the client makes an order, the files become linked with the order.
Customizing the product page based on the uploaded file
The widget triggers custom events on the form chemical element that you tin can subscribe to with javascript. By subscribing to the "upload:added" event, we tin can, for example, alter the production image and replace it with the uploaded image.
You lot can run into a alive example of the events on this production page: upload-events
If yous need aid with the implementation details, ship us a message on the support part of the app!
Customizing the cart page based on the uploaded file
As described earlier, the uploaded file link is stored in the cart line_item.properties.
This means you lot can access them in your liquid templates to display the uploaded files on your cart folio or any folio where y'all have access to the cart object.
Again if you need aid with the implementation details, send the states a bulletin on the back up function of the app!
Conclusion
Nosotros have shown you 2 different ways to add a file upload characteristic to your production pages. Depending on how much coding you want to do yourself, information technology is entirely possible to implement the characteristic with the Shopify core platform. However, to support ajax cart functionality, we had to change the theme-specific javascript lawmaking. Past using a third-party Shopify app like Upload-Lift, the setup becomes straightforward and allows the states to provide a style amend user experience.
Source: https://www.cloudlift.app/blogs/shopify/how-to-add-a-file-upload-on-shopify-product-pages
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