Widget in the Top Panel of the Task Card TASK_VIEW_TOP_PANEL
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Scope:
placement, task
The widget adds an application widget to the task card. In the previous card the item was rendered as a button in the top panel, hence the name of the placement. The handler receives the identifier of the task whose card the widget is opened from.
The placement code is specified in the PLACEMENT parameter of the placement.bind method.
The widget is not displayed in the interface until the application installation is complete. Check the application installation
Where the Widget is Embedded
|
Placement Code |
Location |
|
|
Widget in the top panel of the task card |
Where to Find It in the Interface
Starting from version tasks 25.700.0, a new task card has been released. The placement has no separate button in the top panel in it: all widgets of the card are rendered as rows in the "Applications" block — below the task fields and before the list of additional fields. Open a task and click the row with the application name.

The TASK_VIEW_TAB and TASK_VIEW_SIDEBAR placements are rendered in the same block. Previously registered widgets keep working.
This placement cannot be limited to tasks of specific projects: the groupId connection parameter is supported only by TASK_VIEW_TAB and TASK_VIEW_SIDEBAR.
What the Handler Receives
Data is sent in a POST request: some parameters come in the handler URL query string, the rest in the request body
Array
(
[DOMAIN] => xxx.bitrix24.com
[PROTOCOL] => 1
[LANG] => en
[APP_SID] => dac3aa71afd1a1fd8bef05a282dd0b20
[AUTH_ID] => 3153ba6600705a0700005a4b00000001f0f107fd2c2625abb62bad95fe9b37a0
[AUTH_EXPIRES] => 3600
[REFRESH_ID] => 21d2e16600705a0700005a4b00000001f0f10707ca46d62b79fcd8d19a8c614e
[SERVER_ENDPOINT] => https://oauth.bitrix.info/rest/
[APPLICATION_TOKEN] => 3f0a7c19e5b84d2196c8ad470e5f2b31
[APPLICATION_SCOPE] => task,placement
[member_id] => da45a03b265edd8787f8a258d793cc5d
[status] => L
[PLACEMENT] => TASK_VIEW_TOP_PANEL
[PLACEMENT_OPTIONS] => {"taskId":"31","URI":"\/company\/personal\/user\/1\/tasks\/task\/view\/31\/"}
)
Required parameters are marked with *
Parameters in the Handler URL Query String
|
Parameter |
Description |
|
DOMAIN* |
The Bitrix24 address where the widget handler was invoked |
|
PROTOCOL* |
Secure or non-secure HTTP protocol:
|
|
LANG* |
The user interface language of Bitrix24 that invoked the widget. You can localize the interface language in your widget based on this value |
|
APP_SID* |
Application session identifier. Bitrix24 generates a new one each time the widget is rendered and uses it to link the js library with the application environment |
Parameters in the POST Request Body
|
Parameter |
Description |
|
AUTH_ID |
Authorization token OAuth 2 issued for the user who invoked the widget. Can be used for REST API calls on behalf of this user |
|
AUTH_EXPIRES |
Time in seconds after which the authorization token will become invalid |
|
REFRESH_ID |
Refresh token OAuth 2 issued for the user who invoked the widget. Can be used to refresh the authorization token on behalf of this user |
|
SERVER_ENDPOINT* |
Address of the Bitrix24 authorization server needed to refresh OAuth 2 tokens |
|
APPLICATION_TOKEN* |
Application token. The same value is passed in the |
|
APPLICATION_SCOPE* |
List of scopes granted to the application, separated by commas. Shows which REST API methods are available with the authorization token received |
|
member_id* |
Unique string identifier of Bitrix24 where the widget handler was invoked. |
|
status |
Type of application that registered the handler for this widget. Accepts values:
|
|
PLACEMENT* |
The placement code. You can use the same handler URL for all your widgets. The value that Bitrix24 will report in the |
|
PLACEMENT_OPTIONS |
Additional data in the form of a JSON string that defines the context of the widget execution. For example, this could be an array containing the numeric identifier of the CRM object in the detail form where the widget handler was invoked, etc. The |
Bitrix24 adds a URI key to PLACEMENT_OPTIONS — the path with the query string of the page from which the widget was opened. It arrives for any placement, along with the keys of that placement itself. The key is absent if the browser did not send the Referer header or if the widget was opened from a page on a different domain.
How to Parse the Call Context
PLACEMENT_OPTIONS arrives as a JSON string, not as an array: parse it on the handler side before use. The set of keys is specific to each placement and is described in the PLACEMENT_OPTIONS section of this page.
$placement = $_POST['PLACEMENT'] ?? '';
$options = json_decode($_POST['PLACEMENT_OPTIONS'] ?? '{}', true);
options = json.loads(request.form.get("PLACEMENT_OPTIONS", "{}") or "{}")
In B24JsSDK, there is no need to parse the string: the $b24.placement.options property returns a ready object, and $b24.placement.placement returns the placement code.
What the Handler Must Return
The handler responds with a regular HTML page — Bitrix24 displays it in a frame in place of the widget. The page must allow embedding: if the application server sends the X-Frame-Options or Content-Security-Policy headers that prohibit framing, an empty area remains in place of the widget. How to fix it is described in the article Site Does Not Allow Connection.
PLACEMENT_OPTIONS
The PLACEMENT_OPTIONS value is passed as a JSON string with the call context. In addition to the universal URI key, the context carries the key of the placement itself.
Required parameters are marked with *
|
Parameter |
Description |
|
taskId* |
Identifier of the task whose card the widget is opened from. Task data is returned by the tasks.task.get method |
Code Examples
How to Use Examples in Documentation
curl -X POST \
-H "Content-Type: application/json" \
-H "Accept: application/json" \
-d '{
"PLACEMENT": "TASK_VIEW_TOP_PANEL",
"HANDLER": "https://your-domain.com/widgets/task-view-top-panel-handler.php",
"TITLE": "My task widget",
"LANG_ALL": {
"en": {
"TITLE": "My task widget"
},
"de": {
"TITLE": "Mein Aufgaben-Widget"
}
},
"auth": "**put_access_token_here**"
}' \
https://**put_your_bitrix24_address**/rest/placement.bind
// This snippet is an ES module: top-level await requires type="module" or a bundler.
// $b24 is an already-initialized SDK instance (see the SDK "Get started" guide).
import { Text } from '@bitrix24/b24jssdk'
import type { B24Frame } from '@bitrix24/b24jssdk'
declare const $b24: B24Frame
try {
const response = await $b24.actions.v2.call.make<boolean>({
method: 'placement.bind',
params: {
PLACEMENT: 'TASK_VIEW_TOP_PANEL',
HANDLER: 'https://your-domain.com/widgets/task-view-top-panel-handler.php',
TITLE: 'My task widget',
LANG_ALL: {
en: {
TITLE: 'My task widget',
},
de: {
TITLE: 'Mein Aufgaben-Widget',
},
},
},
requestId: Text.getUuidRfc4122()
})
// The payload is available only on a successful response
if (!response.isSuccess) {
console.error(response.getErrorMessages().join('; '))
} else {
const result = response.getData()!.result
console.info('Placement bound successfully:', result)
}
} catch (error) {
// Thrown on transport or SDK failures (AjaxError, SdkError, etc.)
console.error(error)
}
<!-- Load the SDK (UMD build); it is exposed as the global B24Js -->
<script src="https://unpkg.com/@bitrix24/b24jssdk@1/dist/umd/index.min.js"></script>
<script>
async function bindTaskViewTopPanel() {
try {
// Initialize the SDK inside a Bitrix24 frame
const $b24 = await B24Js.initializeB24Frame()
const response = await $b24.actions.v2.call.make({
method: 'placement.bind',
params: {
PLACEMENT: 'TASK_VIEW_TOP_PANEL',
HANDLER: 'https://your-domain.com/widgets/task-view-top-panel-handler.php',
TITLE: 'My task widget',
LANG_ALL: {
en: {
TITLE: 'My task widget',
},
de: {
TITLE: 'Mein Aufgaben-Widget',
},
},
},
requestId: B24Js.Text.getUuidRfc4122()
})
// The payload is available only on a successful response
if (!response.isSuccess) {
console.error(response.getErrorMessages().join('; '))
return
}
const result = response.getData().result
console.info('Placement bound successfully:', result)
} catch (error) {
// Thrown on transport or SDK failures (AjaxError, SdkError, etc.)
console.error(error)
}
}
document.addEventListener('DOMContentLoaded', bindTaskViewTopPanel)
</script>
try {
$response = $b24Service
->core
->call(
'placement.bind',
[
'PLACEMENT' => 'TASK_VIEW_TOP_PANEL',
'HANDLER' => 'https://your-domain.com/widgets/task-view-top-panel-handler.php',
'TITLE' => 'My task widget',
'LANG_ALL' => [
'en' => [
'TITLE' => 'My task widget',
],
'de' => [
'TITLE' => 'Mein Aufgaben-Widget',
],
],
]
);
$result = $response->getResponseData()->getResult();
if ($result->error()) {
error_log($result->error());
} else {
echo 'Success: ' . print_r($result->data(), true);
}
} catch (Throwable $e) {
error_log($e->getMessage());
echo 'Error binding placement: ' . $e->getMessage();
}
BX24.callMethod(
'placement.bind',
{
PLACEMENT: 'TASK_VIEW_TOP_PANEL',
HANDLER: 'https://your-domain.com/widgets/task-view-top-panel-handler.php',
TITLE: 'My task widget',
LANG_ALL: {
en: { TITLE: 'My task widget' },
de: { TITLE: 'Mein Aufgaben-Widget' }
}
},
function(result) {
if (result.error()) {
console.error(result.error());
} else {
console.log(result.data());
}
}
);
require_once('crest.php');
$result = CRest::call(
'placement.bind',
[
'PLACEMENT' => 'TASK_VIEW_TOP_PANEL',
'HANDLER' => 'https://your-domain.com/widgets/task-view-top-panel-handler.php',
'TITLE' => 'My task widget',
'LANG_ALL' => [
'en' => [
'TITLE' => 'My task widget',
],
'de' => [
'TITLE' => 'Mein Aufgaben-Widget',
],
],
]
);
echo '<PRE>';
print_r($result);
echo '</PRE>';
// client and ctx are already created — see the Go SDK section
res, err := client.Core().Call(ctx, "placement.bind", b24.Params{
"PLACEMENT": "TASK_VIEW_TOP_PANEL",
"HANDLER": "https://your-domain.com/widgets/task-view-top-panel-handler.php",
"TITLE": "My task widget",
"LANG_ALL": b24.Params{
"ru": b24.Params{
"TITLE": "My task widget",
},
"en": b24.Params{
"TITLE": "My task widget",
},
},
})
if err != nil {
return fmt.Errorf("placement.bind: %w", err)
}
// The response arrives as json.RawMessage — unmarshal it into the response
// shape of the placement.bind method, see "Response Handling" on its page.
fmt.Printf("%s\n", res.Result)
Continue Learning
- Widgets in Tasks: Overview of Placements
- Widget on the Tab of the Task Card TASK_VIEW_TAB
- Widget in the Right Sidebar of the Task Card TASK_VIEW_SIDEBAR
- Register a Widget Handler placement.bind
- Interaction with UI: Overview of Methods
- Interactivity in Applications: Overview of Scenarios and Methods
- Methods of BX24 SDK for Widgets