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Extension to CS-Cart and Multi-Vendor allows blocking order placement depending on profile fields customer fills.
We start from installing an extension:

After installation, tab "Customers" shows a new menu "Customers blocking rules".

Each record in this menu consists of the following values
- name: serves informational purpose.
- notification: displayed if customer types incorrect value into profile field.
- profile field: selection of field that will be checked.
- rule: a pre-made rule used to check field content.
- regular expressions, which can be used to program the custom rule.
On below example, we validate the "Phone" field, to check if it contains exactly nine and only nine

If customer types more digits into this field and tries to place an order, he will be prevented and notification will be displayed.
If preset rules are not sufficient, through field "Regex for checking field content" and "Disallowed chars" you can program a custom rule, that will validate the field in similar manner as example above.
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SoftSolid has been an official CS-Cart developer since February 2010. We build add-ons that a store owner can set up without calling a developer: clear settings, sensible defaults and documentation. Every add-on is kept compatible with new CS-Cart releases.
2010 official CS-Cart developer since | 160+ add-ons in this marketplace |
5.0 average rating from 90+ reviews | 29 add-ons also on a low monthly subscription |
What we do for CS-Cart and Multi-Vendor stores
Beyond ready add-ons, we take on almost any development work for CS-Cart, Store Builder and Multi-Vendor:
Custom add-on development New features for your store built as separate, update-safe add-ons, from a small admin tool to a complete module. | |
Changes to existing functionality Checkout, product pages, promotions, orders, admin panel and vendor panel adjusted to the way your business works. | |
Integrations ERP and accounting systems, marketplaces and order management, couriers and parcel lockers, payment gateways, and any service with an API or data feed. | |
Multi-Vendor marketplaces Vendor plans, commissions, payouts, vendor permissions and tools that make running a marketplace easier. | |
Upgrades and migrations CS-Cart and Multi-Vendor upgrades to new versions, moving data from other platforms, imports and exports. | |
Performance and security Store audits, finding and removing malicious code, speed and server configuration. | |
AI and automation AI chat assistants trained on your store content, automatic translations and automation of repetitive work. | |
Support and maintenance Ongoing care of your store, fixes and keeping custom code compatible with new CS-Cart releases. | |
Turnkey stores A complete CS-Cart or Multi-Vendor store set up on a ready theme: configuration, add-ons, integrations, data import and launch. | |
Mobile applications Mobile apps for your store or marketplace, connected to your CS-Cart data. |
Our flagship add-ons
![]() | Base.com (BaseLinker) integration Exchange orders and products between your store and Base.com, and sell on marketplaces from one place. |
![]() | DeepL translations Translate products, categories, pages and menus into every language of your store: one click, in bulk or automatically. |
![]() | AI Agent / Chat Bot (RAG) An AI assistant that answers your customers using the real content of your store. |
![]() | Promotions for vendors Promotions with vendor conditions on Multi-Vendor, and vendors can create promotions of their own. |
Why merchants choose us
- Direct contact with the developer team, no ticket queue
- Add-ons for integrations, shipping, payments, ERP, AI and Multi-Vendor vendor tools
- One team for ready add-ons and custom work, since 2010
- Buy for $200 or more from our offer and get a 20% discount
Tell us what your store needs to do. We will point you to the add-on that already does it, or build a solution for your case.
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