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MultiSelect

This page explains how to use a MultiSelect widget to allow users to select multiple options from a given list.

Content properties​

These properties are customizable options present in the property pane of the widget, allowing users to modify the widget according to their preferences.

Data​

Source Data array<object>​

Specify data as an array of objects to display options in the widget. For example:

[
  {
    name: "Blue",
    code: "BLUE"
  },
  {
    name: "Green",
    code: "GREEN"
  },
  {
    name: "Red",
    code: "RED"
  },
];

You can dynamically generate options by fetching data from queries or JS functions and binding the response to the Source Data property. For example, if you have a query named fetchData, you can bind its response using:

{{fetchData.data}}

If the retrieved data is not in the desired format, you can use JavaScript to transform the data by adding it to the Source Data property, like:

{{fetchData.data.map( p => ({label: p.country, value: p.country}))}}

If you are generating options for MutliSelect widget using JS code as shown above, you must define both the Label and Value properties.

Label string​

Defines the key from the Source Data property that specifies the labels for each option in the MultiSelect widget. To define Label using code, click the JS button next to the property.

Example: If you prefer the label to be displayed in lowercase, you can achieve this using the following code snippet:

{{ item.name.toLowerCase() }}

item.name represents the Source Data's property containing the label, and the toLowerCase() function is applied to convert the label to lowercase.

Value string​

Defines the key from the Source Data property that specifies the values for each option in the MultiSelect widget. Value defined for each option must be unique. To define Value using code, click the JS button next to the property.

Default selected value string​

Sets the initial options that are automatically chosen when the widget is loaded. It serves as the default selection unless the user manually selects another option from the list. Multiple values can be provided in a CSV format or an array of strings for a MultiSelect dropdown. For example, if you want the default option to be Blue and Red, set the Default Selected Value property to:

[
  "GREEN",
  "RED"
]

Label​

Text string​

Sets the label of the widget.

Position string​

Sets the placement of the Label in the widget.

Options:

  • Left: The label is placed on the left of the widget.
  • Top: The label gets placed at the top of the widget.
  • Auto: The label position is determined based on the height of the widget itself.

Alignment string​

Sets the label alignment of the widget when the position selected is Left.

Width (in columns) number​

Sets the width of the label in the widget when the Left position is selected.

Search and filters​

Allow searching boolean​

Enables searching for options within the dropdown list. When this option is enabled, a search input field is displayed in the widget. Additionally, you can control it through JavaScript by clicking on the JS next to the property.

Server side filtering boolean​

Enables server-side filtering via a query request. Use this property when the MultiSelect widget's option data is being bound to a query.

onFilterUpdate​

This event allows you to configure one or multiple actions (Framework functions, queries, or JS functions) to be executed when you update the filter text. You can also write custom JavaScript logic for this event by clicking on the JS next to the property.

Validations​

Required boolean​

Enabling this property for a MultiSelect widget makes it a mandatory field, meaning that the user must select a value from the dropdown. When the MultiSelect widget is placed within a Form widget and the Required property is enabled, the Form's submit button remains inactive until a value is selected in the MultiSelect widget.

General​

Tooltip string​

Sets a tooltip for the widget. You can add hints or extra information about the required input from the user

Placeholder string​

Sets the placeholder text for the MultiSelect widget.

Visible boolean​

Controls the visibility of the widget. If you turn off this property, the widget is not visible in View mode. Additionally, you can use JavaScript by clicking on JS next to the Visible property to control the widget's visibility conditionally.

For example, if you want to make the widget visible only when the user checks an item in a Checkbox widget, you can use the following JavaScript expression in the visible property of the MultiSelect widget:

{{Checkbox1.isChecked}}

Disabled boolean​

Prevents users from selecting the widget. Even though the widget remains visible, user input is not permitted. Additionally, you can use JavaScript by clicking on JS next to the Disabled property to control the widget's disabled state conditionally.

For example, if you want to allow only a specific user to interact with the Multi+-select widget, you can use the following JavaScript expression:

{{appsmith.user.email=="john@appsmith.com"?false:true}}

Animate Loading boolean​

Controls whether the widget is displayed with a loading animation. When enabled, the widget shows a skeletal animation during the loading process. Additionally, you can control it through JavaScript by clicking on the JS next to the property.

Allow select all boolean​

Controls the visibility of Select all option in the dropdown. When enabled, Select all option is visible at the top of the dropdown, allowing you to select all the options with one click.

Height string​

This property determines how the widget's height adjusts to changes in its content.

Options:

  • Fixed: The height of the widget remains as set using drag and resize.
  • Auto Height: The widget's height adjusts dynamically in response to changes in its content.
  • Auto Height with limits: Same as Auto height, with a configurable option to set the minimum and maximum number of rows the widget can occupy.

Events​

onOptionChange​

Allows you to configure one or multiple actions (Framework functions, queries, or JS functions) to be executed when the user selects an option in the dropdown list. It enables you to capture the user's input and perform specific actions in response. You can also write custom JavaScript logic for this event by clicking on the JS button next to the property.

onDropdownOpen​

Allows you to configure one or multiple actions (Framework functions, queries, or JS functions) to be executed when the user opens the dropdown list. For example, you could use the onDropdownOpen event to retrieve data from a database, populate the options in the dropdown list, or display additional information to the user. You can also write custom JavaScript logic for this event by clicking on the JS button next to the property.

onDropdownClose​

Allows you to configure one or multiple actions (Framework functions, queries, or JS functions) to be executed when the user closes the dropdown list. For example, you could use the onDropdownClose event to store the selected option in a database, hide additional information, or reset the widget to its original state. You can also write custom JavaScript logic for this event by clicking on the JS button next to the property.

Style properties​

Style properties allow you to change the look and feel of the widget.

Label styles​

Font color string​

Allows you to set text color for the label. Additionally, you can programmatically modify the text color using JavaScript functions.

Font size string​

Allows you to control the size of the label text. Additionally, you can programmatically modify the text size using JavaScript functions.

Emphasis string​

Allows you to choose a font style; bold or italic. You can click on the JS button to programmatically modify the font style using JavaScript functions.

Border and shadow​

Border radius string​

Applies rounded corners to the outer edge of the widget. To control the border radius programmatically, click the JS button to enable JavaScript and specify a valid CSS border-radius to adjust the radius of the corners.

Box Shadow string​

This property adds a drop shadow effect to the frame of the widget. To control the Box Shadow programmatically, click the JS button to enable JavaScript and specify a valid CSS box-shadow value to customize the appearance of the shadow.

Reference properties​

Reference properties enable you to access the widget's data and state using the dot operator in other widgets or JavaScript functions. They provide additional information or allow interaction with the widget programmatically. For instance, to retrieve the visibility status of a select widget, you can use MultiSelect1.isVisible.

filterText string​

Returns the text entered in the search filter of the MultiSelect widget. For more information, see Server side filtering.

Example:

{{MultiSelect1.filterText}}

isDisabled boolean​

It reflects the state of the widget's Disabled setting. It is represented by a boolean value, where true indicates that the widget is disabled, and false indicates that it is enabled for user interaction.

Example:

{{MultiSelect1.isDisabled}}

isVisible boolean​

The isVisible property indicates the visibility state of a widget, with true indicating it is visible and false indicating it is hidden.

Example:

{{MultiSelect1.isVisible}}

isDirty boolean​

This property is a boolean value that indicates whether the user has interacted with the widget. If the user selects an option from the dropdown list, the isDirty property returns true. However, if the user does not make any selection and the initial value remains unchanged, the isDirty property returns false.

Example:

{{MultiSelect1.isDirty}}

options array​

Returns an array of objects that contain the label and value of the options in the dropdown list.

Example:

{{MultiSelect1.options}}

selectedOptionValues string​

Returns the value of the option displayed in the MultiSelect widget. It changes if the default value of the widget changes or the user selects an option.

Example:

{{MultiSelect1.selectedOptionValues}}

selectedOptionLabels string​

Returns the label of the option displayed in the MultiSelect widget. It changes if the default value of the widget changes or the user selects an option.

Example:

{{MultiSelect1.selectedOptionLabels}}

Methods​

Widget property setters enable you to modify the values of widget properties at runtime, eliminating the need to manually update properties in the editor.

These methods are asynchronous and return a Promise. You can use the .then() block to ensure execution and sequencing of subsequent lines of code in Appsmith.

setDisabled (param: boolean): Promise​

Sets the disabled state of the widget.

Example:

MultiSelect1.setDisabled(false)

setRequired (param: boolean): Promise​

Sets whether the widget is required or not.

Example:

MultiSelect1.setRequired(true)

setSelectedOptions (param: object): Promise​

Sets the selected option of the MultiSelect widget.

Example:

MultiSelect1.setSelectedOption({ label: 'Option 2', value: 'option2' })