Letting customers upload certificates, signed forms or other business documents can simplify administration. But a file interface must be designed as a controlled document service, not as an unrestricted public uploads folder.
Collect only the documents you need
Describe the purpose of each requested document and avoid asking for unnecessary personal information. Use a neutral default label such as “Document”, with a descriptive name editable by administrators. Explain accepted formats and whether customers can replace a file.
Authorize every access request
Being logged in is not enough: each upload, listing and download must verify that the customer owns the file or that an authorized administrator is requesting it. Guessable URLs and sequential file IDs must not expose another customer’s documents.
Restrict types, sizes and storage
Check extensions, content types and reasonable size limits, and rename files safely on storage. Keep sensitive documents outside public web access or serve them through a controlled endpoint. Handle directory creation failures gracefully, since hosting layouts differ.
Make administration predictable
Administrators should see who uploaded a document, its business label and its status, and should be able to rename or remove it when authorized. Use consistent back-office and customer-account terminology. Log important actions without copying document contents into logs.
Plan confidentiality and retention
Define who may access documents, how long they are kept and how deletion requests are processed. Backups may retain copies, so document their lifecycle too. Consider the implications when an administrator closes a customer account.
Test functional and security scenarios
Try valid and invalid formats, oversized files, duplicate names and interruptions during upload. Confirm that customer A cannot download customer B's file by changing an identifier. Repeat with restricted staff permissions and after module reinstall or migration.
Frequently asked questions
Can any logged-in customer download all uploaded documents?
No. Access must be checked against the specific customer and document on every request.
Is a public uploads directory suitable for confidential files?
Not without additional effective access restrictions. Private storage or controlled delivery is preferable.
Related guides on Concepty
- Private PrestaShop store: control access to a restricted product catalogue
- Website backups: why practising a restore matters more than having a file
- Developing a custom PrestaShop module
- Explore the matching Concepty plugin or module
For a specific implementation or compatibility question, explore Concepty services or contact Concepty.