How to call custom app API from client side?

Shopify Apps
1

Hi everyone.

I’m new to Shopify and maybe my questions will be illogical or strange. I’ve read all the documentation, but there are a lot of white spots and often I just can’t find the information I need.

I’m creating an application where the user can leave feedback about the store (not about the product, about the store).
I’ve created a CRUD within the app. I have an endpoint through which the admin can create, delete, edit and get reviews.

To do this inside the application, I need to send a request to /api/review (GET, POST, PUT, DELETE).

My next step is to create a theme extension and add 2 new blocks. The review list and the form.

These blocks should interact with the endpoint inside the app, but I don’t understand how to achieve this.

To display the reviews, I want to make a request like this in the liquid blocks:

Or render it on server side.

Please advise me how to achieve this. Maybe I need to use a proxy, but it is not described anywhere how to do it.

2

I’ve found solution, but I’m not sure it works good…

In Shopify parniers I went to apps/my app/app setup, and made redirect to app url, that I coped above, but this url is changing all the time. How can I lock it?

3

I’ve foud a lot of similar topics, but no one has answer.
That forum is very useful (no)