Slack Message Dialog's Curl Call

Question

can anyone please give me an example of slack message dialog in PHP? How to make curl call to dialog.open method? Please suggest.

Answer 1

Here is a simple example in PHP of how to create a Dialog based on a slash command.

Note that you need to create and install a Slack App first. You also need to add a slash command to your Slack app, which needs to call this script. Finally you need to manually add the OAuth Access Token from your Slack app to this script (replace YOUR_TOKEN).

The script will print the API response in the Slack channel, so you can the response and if they are any errors.

Execute the slash command to run the dialog.

// define the dialog for the user (from Slack documentation example)
$dialog = [
  'callback_id' => 'ryde-46e2b0',
  'title' => 'Request a Ride',
  'submit_label' => 'Request',
  'elements' => [
    [
      'type' => 'text',
      'label' => 'Pickup Location',
      'name' => 'loc_origin'
    ],
    [
      'type' => 'text',
      'label' => 'Dropoff Location',
      'name' => 'loc_destination'
    ]
  ]
];

// get trigger ID from incoming slash request
$trigger = filter_input(INPUT_POST, "trigger_id");

// define POST query parameters
$query = [
    'token' => 'YOUR_TOKEN',
    'dialog' => json_encode($dialog),
    'trigger_id' => $trigger
];

// define the curl request
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, 'https://slack.com/api/dialog.open');
curl_setopt($ch, CURLOPT_HTTPHEADER, [
    'Content-Type: application/x-www-form-urlencoded'
]);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);

// set the POST query parameters
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($query));

// execute curl request
$response = curl_exec($ch);

// close
curl_close($ch);

var_export($response);