13. Enrollment Plugins (enrol/): Automated Course Enrollment, Webhook Triggers & Subscriptions • Moodle LMS: Enterprise Architecture & Plugin Development • Rishabh Ki Kaksha

Moodle LMS: Enterprise Architecture & Plugin Development › 13. Enrollment Plugins (enrol/): Automated Course Enrollment, Webhook Triggers & Subscriptions

45 mins

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Course Syllabus

Module 1: Moodle Core Architecture, Directory Structure & $CFG

01. Moodle Core Architecture: Modular Architecture, Directory Tree, $CFG & $SITE 02. Moodle Request Lifecycle: setup.php, config.php, $PAGE & $OUTPUT Renderers 03. The Frankenstyle Component Naming Convention & Plugin Types Taxonomy

Part 1: Core Architecture, Database & Plugin Dev

Module 2: Database Layer ($DB API) & XMLDB Schema Management

04. Moodle Database API ($DB): get_records, insert_record, execute & Safe Parameter Binding 05. XMLDB Schema Architecture: db/install.xml, upgrade.php & Automated Database Migrations 06. Complex SQL Queries with Recordsets, Pagination & Memory-Efficient Iterators

Part 2: Web Services, High-Scale MUC & AI Subsystem

Module 3: Plugin Development Lifecycle: Block, Local & Activity Modules

07. Building Custom Block Plugins (blocks/): Structure, view.php, Capabilities & Settings 08. Building Custom Local Plugins (local/): System Hooks, Navigation Injection & Cron Tasks 09. Building Custom Activity Modules (mod/): mod_form.php, Grades Integration & Completion API 10. Moodle Form API (moodleform): Validation Rules, File Manager & AJAX Elements

Module 4: Security, Access Control (Access API) & Authentication

11. Moodle Access API: Contexts Hierarchy, Roles, Capabilities (db/access.php) & has_capability() 12. Authentication Plugins (auth/): Single Sign-On (SSO), OAuth2, SAML & Active Directory Sync 13. Enrollment Plugins (enrol/): Automated Course Enrollment, Webhook Triggers & Subscriptions

Module 5: Web Services, Events & High-Scale Caching (MUC)

14. External REST Web Services: db/services.php, External API Functions & Mobile App Interop 15. Moodle Events API: Observer Pattern, Custom Events (core\event) & Triggering Webhooks 16. Moodle Task API: Ad-hoc Tasks vs Scheduled Cron Tasks with Queuing & Logging 17. Moodle Universal Cache (MUC): Definition of Cache (db/caches.php), Redis & Memory Scaling

Module 6: Enterprise AI Integration, Performance & Cloud Clustering

18. Moodle AI Subsystem (core_ai): Pluggable AI Providers, Course Summaries & Smart AI Tutors 19. Moodle Multi-Tier Enterprise Performance: Redis Session Caching, NFS Moodledata & Read Replicas 20. Production High-Availability Cloud Deployment: Dockerized Moodle, Nginx Tuning & MySQL Clustering

Interactive Lesson Studio

# 13. Enrollment Plugins (enrol/): Automated Course Enrollment, Webhook Triggers & Subscriptions

> Moodle LMS Enterprise Notes by Rishabh - Topic 13

---

### 1. `enrol_plugin` Subsystem Architecture 🎓

Enables automated student enrollments based on Stripe/Razorpay payment webhooks, subscription expiry, or cohort sync:

```php
// enrol/boost_pay/lib.php
class enrol_boost_pay_plugin extends enrol_plugin {
    public function enrol_user(stdClass $instance, int $userid, int $roleid = null, int $timestart = 0, int $timeend = 0): void {
        global $DB;
        // Assign student role in course context:
        parent::enrol_user($instance, $userid, $roleid, $timestart, $timeend);
    }
}
```

---

### 2. Interview Ke 3 Sawal Is Topic Se

1. **Course Access vs Course Enrollment me kya farak hai?** -> Enrollment formal academic roster tracking (Grades, Assignments, Attendance) create karta hai; Guest Access sirf read-only browsing allow karta hai.
2. **Automated Expiry Handling Moodle Cron me kaise chalti hai?** -> `enrol_sync_expiry` cron task `timeend < time()` check karke expired students ke roles un-assign ya suspend karta hai.
3. **Cohort Sync (`enrol_cohort`) enterprise university scaling me kaise help karta hai?** -> Batch-level groups (e.g. "Batch 2026 CS") ko single click me hazaron courses me bulk enroll karna.

---
**Next Topic:** 14. External REST Web Services: db/services.php, External API Functions & Mobile App Interop

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Rishabh Gehlot

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