Flows (OrchardCore.Flows)

The Flows module provides methods to display content items directly within another content item. This is achieved with the Flow Part and the Bag Part.

A good example of this would be a page with an FAQ section in it. A FAQ content type might have a question and an answer field, and the content editor can add new FAQs directly when editing the page.

Empty Flows and Bags

Flows and Bags that do not contain any content items will be displayed with a different shape name. For empty Flows, the shape name is FlowPart_Empty; for empty Bags, it's BagPart_Empty.

This allows you to conditionally show or hide empty Flows or Bags. For example, to hide a Flow part that has no items, you can add this to your placement file:

  "FlowPart_Empty": [
    {
      "place": "-"
    }
  ]

And if you'd like to use the same template for Flow parts that have items and Flow parts that have no items, you could add this:

  "FlowPart_Empty": [
    {
      "shape": "FlowPart" 
    }
  ]