Problem: Fetching products via the Shopify REST API with the since_id parameter triggered a runtime error: “expected String to be a Integer,” even after converting the value to an integer.
Context: since_id is a query parameter used to return products with IDs greater than the provided one (pagination).
Cause: The parameter was appended in the request path/URL instead of being passed as a query/search parameter, leading the client/SDK to mis-handle the type.
Resolution: Pass since_id through the client’s query options (searchParams) on the GET call, ensuring it’s a number (e.g., parseInt of the last product’s ID). After this change, the request succeeds.
Outcome: Issue resolved; no further questions or disagreements.
Notes: Screenshots and a code snippet were included to show the error and the corrected request approach.
Hi! When i try to get products info using RESTP API, i parse the last product id with parameter “since_id” to of course, get the other products since the mentioned one. When i execute the code, i get an error saying that “expected String to be a Integer”. I’ve already checked the type of variable and of course, convert it to Int but I keep getting the same error.
And my code:
Finally I found how to solve it!
Here is how (you need to parse another parameter to get method instead of apply the parameter in the “path”):
response = await shopifyClient.get(“/products”, { searchParams: { since_id: parseInt(finalResult[finalResult.length - 1].id) } });
