I am trying to post a message to slack using node.js but I got invalid_blocks_format error. In the slack API reference says that: this error occurs because of invalid JSON or wrong Block KIT syntax. I have checked both and everything seems correct. An example of my payload:
{
"channel": "CHANNELID",
"blocks": [
{
"type": "section",
"text": {
"type": "mrkdwn",
"text": "*Someone* just replied"
}
},
{
"type": "section",
"fields": [
{
"type": "mrkdwn",
"text": "*Email:*\n<https://example.com/some-url?query-param=value|[email protected]>"
},
{
"type": "mrkdwn",
"text": "*Campaign:*\n<https://example.com/some-url|Name - Some value>"
},
{
"type": "mrkdwn",
"text": "*Replying To:*\nanotheremail.com"
},
{
"type": "mrkdwn",
"text": "*Assigned To:*\nName Surname"
}
]
},
{
"type": "section",
"text": {
"type": "mrkdwn",
"text": ">Stop\n>\n>On Aug 8, 2022, at 6:40 PM, Sender <[email protected]> wrote:\n>\n> Hi Someone,\n>\n>My name is Name from A company.\n>\n>Some content\n> \n>Content continues(https://blog.example.com/ulr?query-param=value) Content. \n>Would you like to book a demo?(https://example.com/url) \n>Let me know and I’ll schedule it.\n>\n>\n>Name Surname\n>Customer Success Manager\n>Company Name\n>\n> \n>\n>\n>\n>CONFIDENTIALITY NOTICE: This message, including any attachments, is the property of Company name Ltd., its affiliates and/or subs"
}
},
{
"type": "actions",
"elements": [
{
"type": "button",
"text": {
"type": "plain_text",
"text": "View Recipient"
},
"action_id": "view",
"url": "https://example.com/view?query=asd",
"style": "primary"
},
{
"type": "static_select",
"placeholder": {
"type": "plain_text",
"text": "Set lead status"
},
"action_id": "set-lead-status",
"options": [
{
"text": {
"type": "plain_text",
"text": "Open Lead"
},
"value": "env=prod;recipientID=1234567;leadStatus=Open"
},
{
"text": {
"type": "plain_text",
"text": "Ignore Lead"
},
"value": "env=prod;recipientID=1234567;leadStatus=Ignored"
},
{
"text": {
"type": "plain_text",
"text": "Lost Lead"
},
"value": "env=prod;recipientID=1234567;leadStatus=Lost"
},
{
"text": {
"type": "plain_text",
"text": "Won Lead"
},
"value": "env=prod;recipientID=1234567;leadStatus=Closed"
}
]
},
{
"type": "button",
"text": {
"type": "plain_text",
"text": "Pause Recipient"
},
"action_id": "pause",
"value": "env=prod;recipientID=1234567;"
},
{
"type": "button",
"text": {
"type": "plain_text",
"text": "Unsubscribe"
},
"action_id": "unsubscribe",
"value": "env=prod;recipientID=1234567;",
"style": "danger",
"confirm": {
"title": {
"type": "plain_text",
"text": "Unsubscribe recipient"
},
"text": {
"type": "plain_text",
"text": "Are you sure you want to unsubscribe [email protected]?"
},
"confirm": {
"type": "plain_text",
"text": "Yes"
},
"deny": {
"type": "plain_text",
"text": "Cancel"
}
}
}
]
}
],
"token": "token-value"
}
Also when I try to post this over https://app.slack.com/block-kit-builder, message posted without any problem. What can be the problem and how can I fix it?
Thanks for any help/suggestion.
UPDATE
I figured out the problem but not the solution.
Problem is url's with more than one query parameters. If any text has a link like;
https://example.com/url?param1=value1¶m2=value2
Sources suggested to encode texts but if I do that, slack prints it without decode it. So sent message is not readable. I am still open to suggestions.
I was using an old version of slack lib on node and messages contain ampersand (&) caused the problem like links with more than one query parameters. Updating library solved my problem.