在先前的文章裡，我們已經建立了備份單篇 Threads 貼文的基礎流程。現在，我們要進一步完善它，讓主流程可以自動呼叫這個備份流程，並在完成後自動刪除 Discord 中的訊息，實作更完整的自動化
首先，我們需要回到先前建立的「備份流程」，為它新增一個觸發點，讓其他 workflow 可以呼叫它並傳送資料
前往備份的流程，新增一個起始節點「When Executed by Another Workflow」
設定來接收參數 url
下個節點同樣選擇「Edit Fields」，然後把該參數指派到新的變數 url 身上
{
{
$json.url;
}
}
而現在備份流程的畫布看起來會長得像這樣，有兩個進入點
延續上一篇，從 Loop 的路徑拉出下一個節點「Execute Workflow」，選擇之前做好的備份流程
設定傳入變數 url
{
{
$json.content.split("?")[0];
}
}
下個節點選擇「If」來判斷假如沒有錯誤，就可以繼續進行
{
{
!$json.error;
}
}
假如沒有錯誤，備份流程會回傳訊息，但我們後續也需要 Discord 訊息的參數，所以接下來在「true」的路徑使用「Merge」來合併這些資料，把「Loop」節點連到「Merge」的「input1」，剛才「true」的路徑連到「Merge」的「input2」
接著在「Merge」後選擇「If」來判斷是檔案都上傳到雲端硬碟了
{
{
$input.all()[1].json.is_downloadable;
}
}
接著在「true」路徑，設定下個節點「Limit」
接著選擇「Discord」的「Delete a message」來刪除該訊息
{
{
$json.id;
}
}
而一筆資料跑完就要進行下一筆，所以把 Discord 的節點再連回去「Loop」
底下也附上本次的 JSON
{
"nodes": [
{
"parameters": {},
"type": "n8n-nodes-base.manualTrigger",
"typeVersion": 1,
"position": [80, -200],
"id": "fe19ea5e-606a-4a3f-8350-d430586d4375",
"name": "When clicking ‘Execute workflow’"
},
{
"parameters": {
"workflowId": {
"__rl": true,
"value": "YOUR_WORKFLOW_ID",
"mode": "list",
"cachedResultName": "Sub-Workflow Name"
},
"workflowInputs": {
"mappingMode": "defineBelow",
"value": {
"url": "={{ $json.content.split('?')[0] }}"
},
"matchingColumns": ["content"],
"schema": [
{
"id": "url",
"displayName": "url",
"required": false,
"defaultMatch": false,
"display": true,
"canBeUsedToMatch": true,
"type": "string",
"removed": false
}
],
"attemptToConvertTypes": false,
"convertFieldsToString": true
},
"options": {
"waitForSubWorkflow": true
}
},
"type": "n8n-nodes-base.executeWorkflow",
"typeVersion": 1.2,
"position": [740, 80],
"id": "694dd593-07f7-4e84-be8f-54c2467a976b",
"name": "Execute Workflow",
"alwaysOutputData": false,
"onError": "continueRegularOutput"
},
{
"parameters": {},
"type": "n8n-nodes-base.merge",
"typeVersion": 3.2,
"position": [1080, -160],
"id": "729ab407-c778-4789-a009-0501587cce2d",
"name": "Merge"
},
{
"parameters": {},
"type": "n8n-nodes-base.limit",
"typeVersion": 1,
"position": [1340, 0],
"id": "6da8a716-0ecb-4745-9c6f-4e348f6cf9be",
"name": "Limit"
},
{
"parameters": {
"resource": "message",
"operation": "deleteMessage",
"guildId": {
"__rl": true,
"value": "YOUR_DISCORD_GUILD_ID",
"mode": "list",
"cachedResultName": "Your Guild Name",
"cachedResultUrl": "https://discord.com/channels/YOUR_DISCORD_GUILD_ID"
},
"channelId": {
"__rl": true,
"value": "YOUR_DISCORD_CHANNEL_ID",
"mode": "list",
"cachedResultName": "Your Channel Name",
"cachedResultUrl": "https://discord.com/channels/YOUR_DISCORD_GUILD_ID/YOUR_DISCORD_CHANNEL_ID"
},
"messageId": "={{ $json.id }}"
},
"type": "n8n-nodes-base.discord",
"typeVersion": 2,
"position": [1500, 60],
"id": "390b42ff-3883-4873-925f-59c3e0ad5705",
"name": "DELETE",
"webhookId": "YOUR_WEBHOOK_ID",
"credentials": {
"discordBotApi": {
"id": "YOUR_CREDENTIAL_ID",
"name": "Discord Bot account"
}
}
},
{
"parameters": {
"resource": "message",
"operation": "getAll",
"guildId": {
"__rl": true,
"value": "YOUR_DISCORD_GUILD_ID",
"mode": "list",
"cachedResultName": "Your Guild Name",
"cachedResultUrl": "https://discord.com/channels/YOUR_DISCORD_GUILD_ID"
},
"channelId": {
"__rl": true,
"value": "YOUR_DISCORD_CHANNEL_ID",
"mode": "list",
"cachedResultName": "Your Channel Name",
"cachedResultUrl": "https://discord.com/channels/YOUR_DISCORD_GUILD_ID/YOUR_DISCORD_CHANNEL_ID"
},
"limit": 50,
"options": {}
},
"type": "n8n-nodes-base.discord",
"typeVersion": 2,
"position": [280, -200],
"id": "28289e49-fa10-41cd-8e6e-759da069518b",
"name": "GET messages",
"webhookId": "YOUR_WEBHOOK_ID",
"credentials": {
"discordBotApi": {
"id": "YOUR_CREDENTIAL_ID",
"name": "Discord Bot account"
}
}
},
{
"parameters": {
"options": {}
},
"type": "n8n-nodes-base.splitInBatches",
"typeVersion": 3,
"position": [560, 0],
"id": "6bacf2a5-8e7c-4ffd-9be2-c248c5e3f5b7",
"name": "Loop Over Items"
},
{
"parameters": {
"conditions": {
"options": {
"caseSensitive": true,
"leftValue": "",
"typeValidation": "strict",
"version": 2
},
"conditions": [
{
"id": "3f4db064-3249-4aae-9e46-54eebe49515e",
"leftValue": "={{ !$json.error }}",
"rightValue": "",
"operator": {
"type": "boolean",
"operation": "true",
"singleValue": true
}
}
],
"combinator": "and"
},
"options": {}
},
"type": "n8n-nodes-base.if",
"typeVersion": 2.2,
"position": [920, 60],
"id": "44fe353e-e047-45b3-b7d9-bd4f189e7b47",
"name": "Check"
},
{
"parameters": {
"conditions": {
"options": {
"caseSensitive": true,
"leftValue": "",
"typeValidation": "strict",
"version": 2
},
"conditions": [
{
"id": "c0245864-98c9-4845-9682-c3e08e4d6349",
"leftValue": "={{ $input.all()[1].json.is_downloadable }}",
"rightValue": 2,
"operator": {
"type": "boolean",
"operation": "true",
"singleValue": true
}
}
],
"combinator": "and"
},
"options": {}
},
"type": "n8n-nodes-base.if",
"typeVersion": 2.2,
"position": [1140, 80],
"id": "0b05e42f-f903-45a8-98b4-4e0023dde89c",
"name": "IF upload"
},
{
"parameters": {
"conditions": {
"options": {
"caseSensitive": true,
"leftValue": "",
"typeValidation": "strict",
"version": 2
},
"conditions": [
{
"id": "3fb106b3-25f9-4cf1-a622-d46a65389218",
"leftValue": "={{ $json.embeds[0].provider.name }}",
"rightValue": "Threads",
"operator": {
"type": "string",
"operation": "equals",
"name": "filter.operator.equals"
}
}
],
"combinator": "and"
},
"options": {}
},
"type": "n8n-nodes-base.if",
"typeVersion": 2.2,
"position": [280, 20],
"id": "8f723f84-401a-4385-94a5-6e188313818f",
"name": "IF threads"
}
],
"connections": {},
"pinData": {},
"meta": {
"templateCredsSetupCompleted": true,
"instanceId": "YOUR_N8N_INSTANCE_ID"
}
}
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