passing data from theme app extension to backend, and update section based on data received

Shopify Partner
4 0 1



I am trying to pass a data from live website to my application, data will be entered by live user on theme app extension and this data need to be collected on my application backend, Once data is received, application will do processing in the bacend and will send some response back, based on the response received, the live website will have some modification (bassicaly adding one or two lines of html code, which can be done using javascript). Is there a way to achieve this?


I cannot post data directly to another domain, and as I understand app proxy is also not suitable for this, as app proxy works for admin, not for live website. Any help will be appreciated.


Thanks in advance.

Replies 3 (3)

Shopify Staff
2731 299 769

Hi Satyajit1,


Instead of using an app proxy, you could explore using the Ajax API to potentially pass data to the live theme. Have a look at our documentation here to see if it would work for your usecase. 

Liam | Developer Advocate @ Shopify 
 - Was my reply helpful? Click Like to let me know! 
 - Was your question answered? Mark it as an Accepted Solution
 - To learn more visit or the Shopify Web Design and Development Blog

Shopify Partner
4 0 1

thanks @Liam for your response. I can use ajax to process the data received, but how do i send data to a remote server? or application in this case?

Shopify Partner
180 8 49

Hi Liam,


I am confused!  I am trying to generate and use access/session tokens for authorization of communications between my theme extension and backend, but coming up short in a few ways.  Pls ... what am I doing wrong or ??


Problem #1.


Running on my development server, I installed via npm the @Shopify/admin-ui-extensions.   But when I attempt to import it into my extension js code, I keep getting failed references to the shopify CDN at ...

I have tried all sorts of locations in the install line, none seem to work


 import ... from '@shopify/admin-ui-extensions'  =>  Relative references must start with either "/", "./", or "../".
import {extend, TextField, Button} from '../../../@shopify/admin-ui-extensions'; 
import {extend, TextField, Button} from '../../../node_modules/@shopify/admin-ui-extensions';
import {extend, TextField, Button} from '/@shopify/admin-ui-extensions' 
import { extend, TextField, Button } from '/node_modules/@shopify/admin-ui-extensions';
Problem 2.
The documentation seems to be telling me that I cannot use this in production anyway.  What should I use instead to get/use tokens?
Admin UI block extensions are currently in developer preview. You can only render them while developing locally on a development store.
Thanks and best regards, jb