Free cookie consent management tool by TermsFeed

Custom Picker Component

Function

a!pickerFieldCustom( label, instructions, required, readOnly, disabled, maxSelections, suggestFunction, selectedLabels, selectedTooltips, value, validations, saveInto, validationGroup, requiredMessage, labelPosition, placeholder, helpTooltip, selectedLinks, accessibilityText, showWhen )

Displays an autocompleting input for the selection of one or more items from an arbitrary data set. For an example of how to configure the picker, see the Configure an Array Picker SAIL Recipe.

See also: DataSubset

Parameters

Name Keyword Types Description

Label

label

Text

Text to display as the field label.

Instructions

instructions

Text

Supplemental text about this field.

Required

required

Boolean

Determines if a value is required to submit the form. Default: false.

Read-only

readOnly

Boolean

Determines if the field should display as not editable. Default: false.

Disabled

disabled

Boolean

Determines if the field should display as potentially editable but grayed out. Default: false.

Maximum Selections

maxSelections

Number (Integer)

Maximum number of allowed selections. Once this number is reached, further selections are blocked until a selection is removed.

Suggestion Function

suggestFunction

Any Type

A reference to a rule or function that populates the suggestion pane. The rule or function must take a single Text parameter and must return a DataSubset, created via a!dataSubset() or a plug-in function, where "data" contains the labels to display and "identifiers" contains the values to save.

Selected Labels

selectedLabels

List of Text String

Array of text display labels for the currently selected items.

Selection Tooltips

selectedTooltips

List of Text String

Array of text tooltips for the currently selected items.

Display Value

value

Any Type

Array of selected identifiers.

Validations

validations

List of Text String

Validation errors to display below the field when the value is not null.

Save Input To

saveInto

List of Save

One or more variables that are updated with the array of selected identifiers when the user adds or removes an item. Use a!save() to save a modified or alternative value to a variable.

Validation Group

validationGroup

Text

When present, the requiredness of the field is only evaluated when a button in the same validation group is pressed. The value for this parameter cannot contain spaces. For example, “validation group” is not a valid value. You need to add an underscore between words: “validation_group”. See the following recipes for more information:

Required Message

requiredMessage

Text

Custom message to display when the field's value is required and not provided.

Label Position

labelPosition

Text

Determines where the label appears. Valid values:

  • "ABOVE" (default) Displays the label above the component.
  • "ADJACENT" Displays the label to the left of the component.
  • "COLLAPSED" Hides the label. The label will still be read by screen readers; see accessibility considerations for more information.
  • "JUSTIFIED" Aligns the label alongside the component starting at the edge of the page.

Placeholder

placeholder

Text

Text to display in the field when it is empty. Does not show if the field is read only.

Help Tooltip

helpTooltip

Text

Displays a help icon with the specified text as a tooltip. The tooltip displays a maximum of 500 characters. The help icon does not show when the label position is "COLLAPSED".

Selected Links

selectedLinks

List of Variant

Array of links to apply to the selected tokens. Create links with a!authorizationLink(), a!documentDownloadLink(), a!dynamicLink(), a!newsEntryLink(), a!processTaskLink(), a!recordLink(), a!reportLink(), a!safeLink(), a!startProcessLink(), a!submitLink(), or a!userRecordLink().

Accessibility Text

accessibilityText

Text

Additional text to be announced by screen readers. Used only for accessibility; produces no visible change.

Visibility

showWhen

Boolean

Determines whether the component is displayed on the interface. When set to false, the component is hidden and is not evaluated. Default: true.

Usage considerations

Using the suggestionFunction parameter

  • When a user types in the picker's text box, the text they type is passed to the suggestionFunction parameter. The returned data-subset must have a text array as data. Each item in that array is a selectable suggestion in the pane. If a suggestion is picked, the component's value is updated with the object at the same index of the data-subset's identifiers array (in addition to any existing selected identifiers).

Text lengths and placeholders

  • selectedLabels, selectedValues, selectedLinks, and selectedTooltips must all be the same length.
  • Whether placeholder text clears on focus or input varies by device and browser.
  • If you are trying to decide whether to use a dropdown with search or a picker component, keep in mind that the dropdown search runs client-side and the performance cost of loading options happens on initial load whereas the picker search runs server-side and the performance cost of loading options happens while the user is searching. For small sets of options, we recommend using the dropdown component.

Feature compatibility

The table below lists this component's compatibility with various features in Appian.
Feature Compatibility Note
Portals Compatible
Offline Mobile Compatible
Sync-Time Custom Record Fields Incompatible
Real-Time Custom Record Fields Incompatible

Custom record fields that evaluate in real time must be configured using one or more Custom Field functions.

Process Reports Incompatible

Cannot be used to configure a process report.

Process Events Incompatible

Cannot be used to configure a process event node, such as a start event or timer event.

The following patterns include usage of the Custom Picker Component.

Feedback