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Update relation formwidget with availables options #243

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5 changes: 4 additions & 1 deletion backend/forms.md
Original file line number Diff line number Diff line change
Expand Up @@ -1153,7 +1153,7 @@ Option | Description

### Relation

`relation` - renders either a dropdown or checkbox list according to the field relation type. Singular relationships display a dropdown, multiple relationships display a checkbox list. The label used for displaying each relation is sourced by the `nameFrom` or `select` definition.
`relation` - renders either a dropdown or checkbox list according to the field relation type. Singular relationships display a dropdown, multiple relationships display checkbox as an indented list or as a collapsable tree. The label used for displaying each relation is sourced by the `nameFrom` or `select` definition.

```yaml
categories:
Expand All @@ -1180,6 +1180,9 @@ Option | Description
`order` | an order clause to sort options by. Example: `name desc`.
`emptyOption` | text to display when there is no available selections.
`scope` | specifies a [query scope method](../database/model#query-scopes) defined in the **related form model** to apply to the list query always.
`quickselect` | if true, controls allowing all/none checkboxes to be selected will be displayed.
`displayTree` | if true and the related model implements [NestedTree](./database/traits#nested-tree) trait, display the list as a collapsable tree.
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Under what conditions would you want a tree relationship to not display like a tree (i.e. set this to false)?

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To keep the default behavior.

`quickTreeActions` | if true and `displayTree` is true, display controls to open all, open selected or close all tree nodes.
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Under what conditions would you want to disable those buttons?

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With "short" list which doesn't have a lot of nodes maybe!?


### Relation Manager

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