Advanced Select (selectEx)

The Advanced Select (selectEx) element provides a feature-rich dropdown experience by integrating the vue-multiselect component. It supports functionalities like single/multiple selections, search/filtering within options, tagging (creating new options on the fly), and custom option templating.

In BetterForms, this element is ideal for scenarios requiring more than a simple dropdown, such as selecting multiple tags, choosing from a long list of searchable items, or allowing users to add new choices.

Common Configuration Properties

Property	Type	Description
type	String	Must be set to "selectEx".
label	String	The label for the select field.
model	String	The key in your BetterForms data model where the selected option(s) will be stored.
values	Array	An array of options to choose from. Each option can be a simple string/number or an object.
disabled	Boolean	If true, the select will be visible but not interactive. Defaults to false.
readonly	Boolean	Similar to disabled. If true, the value cannot be changed. Defaults to false.
required	Boolean	If true, a selection must be made. Defaults to false.
hint	String	Additional helper text.
styleClasses	String / Array	CSS classes for styling the wrapper.
selectOptions	Object	Crucial property. An object containing options for the underlying vue-multiselect component. See below.

selectOptions (for vue-multiselect)

This object is passed directly to vue-multiselect. Key vue-multiselect properties you might configure here include:

vue-multiselect Option	Type	Description
options	Array	The array of available options. Often, values from the main schema is mapped here.
multiple	Boolean	Set to true for multi-select. Defaults to false.
trackBy	String	Used when options are objects. Name of the property to use as the unique key for tracking selections.
label	String	Used when options are objects. Name of the property to display as the option's text.
searchable	Boolean	If true (default), allows users to search/filter options.
clearOnSelect	Boolean	If true (default for single select), closes the dropdown after selection.
hideSelected	Boolean	If true (default for multi-select), hides already selected options from the list.
placeholder	String	Placeholder text for the select input.
allowEmpty	Boolean	If true (default for single select), allows deselecting the current option.
taggable	Boolean	If true, allows users to create new options (tags) if their input doesn't match existing options.
tagPlaceholder	String	Placeholder text when taggable is true (e.g., "Press enter to create a tag").
max	Number	Maximum number of options that can be selected (for multi-select).
loading	Boolean	Set to true to display a loading spinner (useful for async options).
optionHeight	Number	Height of each option in pixels (for performance with many options). Default 40.
showLabels	Boolean	If true (default), shows selected/noResult/noOptions messages.

Refer to the vue-multiselect documentation for all available options.

Example Schema Snippet (Single Select with Search)

{
  "type": "selectEx",
  "label": "Choose a Category",
  "model": "selectedCategory",
  "values": [
    { "id": 1, "name": "Electronics" },
    { "id": 2, "name": "Books" },
    { "id": 3, "name": "Clothing" }
  ],
  "selectOptions": {
    "options": "self.schema.values", // Refers to the values array above
    "searchable": true,
    "placeholder": "Search or select a category",
    "label": "name",       // Property to display for each option
    "trackBy": "id"        // Property to use as unique key
  }
}

Example Schema Snippet (Multi-Select with Tagging)

{
  "type": "selectEx",
  "label": "Assign Tags",
  "model": "assignedTagsArray", // Model will store an array of selected tag objects
  "values": [
    { "code": "urgent", "desc": "Urgent Task" },
    { "code": "feature", "desc": "New Feature Request" }
  ],
  "selectOptions": {
    "options": "self.schema.values",
    "multiple": true,
    "taggable": true,
    "tagPlaceholder": "Add a new tag",
    "placeholder": "Select or create tags",
    "label": "desc",
    "trackBy": "code"
  }
}

BetterForms Specific Notes

• The values array in the main schema provides the source for options. You often reference this in selectOptions.options using a path like "self.schema.values" or by directly providing an array if the structure is different.

• When options in selectOptions are objects (which is common), trackBy is essential to uniquely identify options, and label specifies which object property to display.

• The value stored in the model will be a single selected option object (or its trackBy value, depending on configuration) for single select, or an array of selected option objects (or their trackBy values) for multi-select.

• Ensure vue-multiselect is integrated into your BetterForms environment for this component to function. (User confirmed this is the case).

Full Property Reference

This element is built upon Vue Form Generator and heavily utilizes vue-multiselect. For complete details on selectOptions:

• VFG selectEx Field Documentation
• vue-multiselect Official Documentation (for all selectOptions props, events, and slots)