object-dropdown

Overview

Version compatibility

• object-dropdown is supported in all versions of the JourneyApps Container and Runtime.

• It received several functional updates in version 4.84.0 of the JourneyApps Runtime, including the ability to bind to an array, which allows a user to select multiple options.

The object-dropdown UI component lists objects from a database query or array for selection by the user. Once an object, or multiple objects (since runtime version 4.84.0) are selected, they can be stored as a field, or used to further your app's workflow.

Basic Example

Binding a single object

main.view.xml

<var name="countries" type="query:country" />
<!-- OR -->
<var name="countries" type="array:country" />

<var name="selected_country" type="country" />

<object-dropdown label="Country of residence" query="countries" bind="selected_country" required="false" />

main.js

function init() {
     view.countries = DB.country.all();
     // OR
     view.countries = DB.country.all().toArray();
}

Binding multiple objects

main.view.xml

<var name="countries" type="query:country" />
<!-- OR -->
<var name="countries" type="array:country" />

<var name="selected_countries" type="array:country" />

<object-dropdown label="Country of residence" query="countries" bind="selected_countries" required="false" />

main.js

function init() {
     view.countries = DB.country.all();
     // OR
     view.countries = DB.country.all().toArray();
}

A selected option in the object-dropdown component:

List of options in the object-dropdown component:

Note

By default, when 12 or more options are listed in an object-dropdown a search box appears at the top of the list of options. It can be used to more efficiently find an option. See the search-controls reference for more information.

Standard Attributes

bind

bind

Example - bind to a single object:

main.view.xml

 <var name="countries" type="query:country" />
 <var name="selected_country" type="country" />

 <object-dropdown label="Country of residence" placeholder="Select a country" query="countries" bind="selected_country" required="false" />

Example - bind to an array:

Version compatibility

Binding an object-dropdown to an array was introduced in version 4.84.0 of the JourneyApps Runtime.

main.view.xml

<var name="countries" type="query:country" />
<var name="selected_countries" type="array:country" />

<object-dropdown label="Previous countries of residence" placeholder="Select all that apply" query="countries" bind="selected_countries" required="false" />

label

label

query

Required

Default: unset

query contains the name of the database query or array variable to populate the objects in the object-dropdown.

<var name="countries" type="query:country" />
<!-- OR -->
<var name="countries" type="array:country" />

<object-dropdown query="countries" bind="selected_country" required="false" />

required

required

Advanced Attributes

align-content

Version compatibility

align-content was introduced in version 4.84.0 of the JourneyApps Runtime.

align-content

align-dialog-content

Optional

Type: center | left | right

Default: center

Version compatibility

align-dialog-content was introduced in version 4.84.0 of the JourneyApps Runtime.

Specifies how the content of the list of options dialog should be aligned. This includes the display value of each option, as well as the header text of the dialog.

<object-dropdown label="Country of residence" align-dialog-content="left" query="countries" bind="selected_country" />

align-label

align-label

clear-button-visibility

clear-button-visibility

dialog-title

Optional

Type: string

Default: "Choose an option"

Version compatibility

dialog-title was introduced in version 4.84.0 of the JourneyApps Runtime.

Header text of the dialog that displays the list of options of the object-dropdown.

<object-dropdown label="Country of residence" dialog-title="Choose the country of residence" query="countries" bind="selected_country" />

disabled

disabled

display

Optional

Type: string

Default: The <display/> tag of the object as defined in the app's data model

Specifies the display value of each option in the object-dropdown list. Can be a static string, a format string or a JS/TS function.

schema.xml

<model name="country" label="Country">
    <field name="name" label="Name" type="text:name"/>
    <field name="population" label="Population" type="integer"/>
    
    <display>{name}</display>
</model>

main.view.xml

<!-- Here the display value for each option is the country's name and population, separated by a "-" -->
<object-dropdown label="Country of residence" display="{name} - {population}" query="countries" bind="selected_country" required="true" />

empty-message

Version compatibility

empty-message was introduced in version 4.84.0 of the JourneyApps Runtime.

Optional

Type: string (static text, a format string or the return value of a JS/TS function)

Default: unset

Text that is displayed if no options are available to list once the user opens the object-dropdown.

icon-position

Version compatibility

icon-position was introduced in version 4.86.1 of the JourneyApps Runtime.

icon-position

id

id

label-case

Version compatibility

label-case was introduced in version 4.84.0 of the JourneyApps Runtime.

label-case

label-color

label-color

modifier-text

Version compatibility

modifier-text was introduced in version 4.84.0 of the JourneyApps Run

modifier-text

on-change

on-change

placeholder

placeholder

search-controls

Optional

Type: auto | none | show

Default: auto

Version compatibility

search-controls was introduced in version 4.84.0 of the JourneyApps Runtime.

Set the visibility of the search box of the object-dropdown component. auto shows the search box when the list of options contains 12 options or more. none never shows the search box, and show always shows the search box at the top of the list of options.

<object-dropdown label="Country of residence" query="countries" bind="selected_country" search-controls="show" />

show-if and hide-if

show-if

hide-if

Component Methods

The following component methods are available when an id is assigned to the component and component.objectDropdown({id:'my-id'}) is called from JS/TS:

clear

Programmatically clear the selected value(s) bound to the object-dropdown.

clearSearch

Programmatically clear a value entered into the search box.

openDropdown

Programmatically open the list of items.

closeDropdown

Programmatically close the list of items.

scrollDown

Programmatically scroll down the list of items when the object-dropdown is opened.

scrollIntoView

Programmatically scroll until the object-dropdown is visible in the view.

scrollUp

Programmatically scroll up the list of items when the object-dropdown is opened.

selectItem

Programmatically select an item from the list by its display value.

main.view.xml

<var name="countries" type="query:country" />
<var name="selected_country" type="country" />

<object-dropdown id="my-dropdown" query="countries" bind="selected_country" label="Country" />

main.js

function select() {
    component.objectDropdown({id: 'my-dropdown'}).openDropdown(); // Need to open the dropdown first
    component.objectDropdown({id: 'my-dropdown'}).selectItem("Germany");
}

selectItemByIndex

Programmatically select an item from the list by its index. Note: Indexes begin at 1.

main.view.xml

<var name="countries" type="query:country" />
<var name="selected_country" type="country" />

<object-dropdown id="my-dropdown" query="countries" bind="selected_country" label="Country" />

main.js

function select() {
    component.objectDropdown({id: 'my-dropdown'}).openDropdown(); // Need to open the dropdown first
    component.objectDropdown({id: 'my-dropdown'}).selectItemByIndex(2);
    // Selects the second country in the list
}

setSearch

Programmatically enter a search value and triggers a search of the object-dropdown.