tree-based view for Backpack

[blondie63]

It would be useful to have a CRUD that shows the main records with the classic "+" on the left showing the child records (e.g., invoices and invoice lines).
Something a little different from enableDetailsRow(), like enableChildsRow().

[backpack-ai-bot[bot]]

Short answer: there’s no built-in “tree view” or enableChildsRow() in Backpack right now.

What you can do today:

• Use Details Row and render any custom HTML inside it (including your own table of child records). You must enable it, allow access, and provide the view/controller method yourself (enableDetailsRow/allowAccess + showDetailsRow or setDetailsRowView) (CRUD API: Details Row and Cheat Sheet).
  Example:

$this->crud->enableDetailsRow();
$this->crud->allowAccess('details_row');
// either override showDetailsRow($id) or:
$this->crud->setDetailsRowView('your-view');

(CRUD API: Details Row)

• Put relation tables or widgets inside the Details Row. A commonly used community add-on is izica’s “relations-widgets-for-backpack” (maintained externally) (Forum: ListOperation with sub-records, Issue: relations widgets, Forum: Table component for Show operations).

• Alternatives for Show page:

  • Use a relationship column with subfields to list related items inline on Show (Table component for Show operations).
  • Build a custom widget/column or a custom Show view to render children as you like (Table component for Show operations).

Notes:

• The “+” master/detail behavior you describe is exactly what Details Row enables; Backpack leaves the inner content up to you. There’s no separate enableChildsRow API (Master/Detail discussion).
• A native “table widget inside Show/List” has been requested but is not built-in yet (Feature request).

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Relevant sources:

CRUD API Cheat Sheet|Details Row
Github Issue (closed): Relations widgets for edit and view pages
Github Issue (closed): I want to show the child Model items inside the Parent setupShowOperation()
Github Issue (closed): [Feature] Ability to define any (nested) fields inside "table" field
Table component for Show operations
Github Issue (closed): CRUD : Adding Multiple Child Records (1-n relationships) on related CRUD form?
CRUD API|Details Row
Github Issue (open): [Feature Request] Table Widget (aka ListOperation inside ShowOperation) aka. multiple existing list views in a show view
Github Issue (closed): Works on addField but not on addColumn
Master / Detail
ListOperation with sub-records