The offset value must be greater than or equal to zero – CodeIgniter 4 Pagination library

Question

The goal is to use CodeIgniter 4’s Pagination library to display large datasets without encountering the validation error "The offset value must be greater than or equal to zero." The library computes the offset as ($page - 1) * $perPage and passes it directly to the Query Builder’s limit method, which throws the error when the offset is negative. There is no automatic guard against negative offsets in the pagination component, leaving it to developers to ensure that page numbers and per_page settings produce only non‑negative values.

This raises uncertainty about whether the framework should clamp negative offsets to zero, validate page numbers internally, or rely on developer‑side checks. The lack of clear guidance in the documentation makes the behavior ambiguous across different deployment scenarios.

Should the Pagination library automatically adjust negative offsets to zero before calling the Query Builder?
Is it acceptable for developers to validate the current page number (ensuring it is ≥ 1) before invoking pagination, or should the framework enforce this?
Does the Query Builder’s limit method need to treat a negative offset as zero instead of throwing an error?

Tasadduq Burney · Answer

Direct answer

No. CodeIgniter 4’s pagination component does not universally clamp negative offsets to zero, and it should not. The offset is computed as ($page - 1) * $perPage, so a page value below 1 produces a negative number before the Query Builder ever sees it.
Yes. Validating that page >= 1 on the server side is acceptable and is the developer’s responsibility. The framework does not enforce this uniformly across CI4 releases.
No. QueryBuilder::limit() should continue throwing DatabaseException for negative offsets. Silently coercing to zero would mask invalid input and change result sets for requests such as ?page=0.

Confirmed facts and likely explanation

Confirmed: QueryBuilder::limit($limit, $offset) throws a DatabaseException with “The offset value must be greater than or equal to zero” when $offset < 0. The message originates from the database layer, not the pagination library.
Likely cause: page is 0, negative, missing, or non-numeric, making ($page - 1) * $perPage negative. A per_page value of zero or less can also produce invalid pagination math.
Uncertainty: class names, default query keys, and model->paginate() signatures vary across CodeIgniter 4 releases. The installed version determines which API applies.

Steps for this case

Read page and per_page from the request.
Cast both to integers, then clamp page to at least 1 and per_page to at least 1 before computing any offset.
Pass the normalized page to the model’s pagination method, or compute max(0, ($page - 1) * $per_page) and pass that non-negative offset to QueryBuilder::limit().

Verification

Request ?page=0, ?page=-1, and a URL with no page parameter; each should return the first page without a DatabaseException.
Request ?page=1 and ?page=2; confirm offset is 0 for page 1 and equals per_page for page 2.
Inspect generated SQL with getCompiledSelect() or the database debugger if available.

Missing diagnostic detail
Which CodeIgniter 4 version are you running, and are you calling model->paginate() or QueryBuilder::limit() directly? This changes the exact class names and method signatures to use.

The offset value must be greater than or equal to zero – CodeIgniter 4 Pagination library

1 answer

Direct answer

Confirmed facts and likely explanation

Steps for this case

Verification

Missing diagnostic detail

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