Why doesn't the delete modal appear in backendmodules?
Maybe you've forgotten to add the correct RequireJs-Module:
$pageRenderer->loadRequireJsModule('TYPO3/CMS/Backend/Modal');
Documentation
TYPO3 Modules by coding.ms
TYPO3 toolbox for Frontend-User-Registration, Profile, Invitations, Listing with detailview, Addressmanagement, and Frontend-Recordmanagement. User friendly Backendmodule for managing Frontend- and Backend-Users and other Records. Toolbox for frontend and backend modules in TYPO3 for registration, profile editing, address management, and user listings with detail view, plus extensive intranet and application areas.
Menu
- Configuration
- Backend
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Frontend
- Todo List for Frontend Integration
- Form Definition
- Available Validators
- Integrate Management in own Extension Preparation
- Integrate Management in own Extension Create
- Integrate Management in own Extension List
- Integrate Management in own Extension Edit
- Integrate Management in own Extension Delete
- Integrate Management in own Extension Error
- Automatic Slug Generation
- Clear Page Cache
- Send Mail On Changed Records
- Use Form Tabs
- HowTo
- FAQ
- Developer