E - Approval Handler

The workflow JSON

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{
  "name": "E - Approval Handler",
  "nodes": [
    {
      "parameters": {
        "updates": [
          "callback_query"
        ]
      },
      "type": "n8n-nodes-base.telegramTrigger",
      "typeVersion": 1.1,
      "position": [
        -500,
        0
      ],
      "id": "telegram-trigger-approval-1",
      "name": "Approval Callback Listener",
      "credentials": {
        "telegramApi": {
          "name": "<your credential>"
        }
      }
    },
    {
      "parameters": {
        "jsCode": "const cq = $json.callback_query;\nif (!cq) { return []; }\nconst parts = (cq.data || '').split('|');\nconst approvalType = parts[0] || '';\nconst approvalId = parts[1] || '';\nconst decision = (parts[2] || '').toUpperCase();\nreturn [{\n  json: {\n    approvalType,\n    approvalId,\n    decision,\n    callbackQueryId: cq.id,\n    chatId: cq.message && cq.message.chat ? cq.message.chat.id : '',\n    messageId: cq.message ? cq.message.message_id : '',\n    originalText: cq.message ? (cq.message.text || '') : ''\n  }\n}];\n"
      },
      "type": "n8n-nodes-base.code",
      "typeVersion": 2,
      "position": [
        -260,
        0
      ],
      "id": "code-parse-callback-1",
      "name": "Parse Callback"
    },
    {
      "parameters": {
        "operation": "read",
        "documentId": {
          "__rl": true,
          "value": "1lVPDfBIyFNGt3zKf3Xb3tUSaIRkIi6IZCKCtHtYj-c8",
          "mode": "id"
        },
        "sheetName": {
          "__rl": true,
          "value": "Approvals",
          "mode": "name"
        },
        "options": {}
      },
      "type": "n8n-nodes-base.googleSheets",
      "typeVersion": 4.5,
      "position": [
        -20,
        0
      ],
      "id": "sheets-read-approvals-1",
      "name": "Read Approvals Sheet",
      "credentials": {
        "googleSheetsOAuth2Api": {
          "name": "<your credential>"
        }
      }
    },
    {
      "parameters": {
        "jsCode": "const rows = $input.all();\nconst cb = $('Parse Callback').first().json;\nlet matchIndex = -1;\nfor (let i = 0; i < rows.length; i++) {\n  if ((rows[i].json.ApprovalID || '') === cb.approvalId) { matchIndex = i; break; }\n}\nif (matchIndex === -1) {\n  return [{ json: { ...cb, found: false, resultText: `${cb.originalText}\\n\\n\\u26A0\\uFE0F Couldn't find this approval (it may already be resolved).` } }];\n}\nconst row = rows[matchIndex].json;\nconst rowNumber = matchIndex + 2;\nconst newStatus = cb.decision === 'YES' ? 'Approved' : 'Backlog';\nconst resolvedDate = new Date().toISOString().slice(0,10);\nlet details = {};\ntry { details = JSON.parse(row.Details || '{}'); } catch (e) {}\nconst label = cb.decision === 'YES' ? '\\u2705 Approved \\u2014 moving forward' : '\\uD83D\\uDDC4 Saved to backlog for later';\nconst resultText = `${cb.originalText}\\n\\n${label}`;\nreturn [{\n  json: {\n    ...cb,\n    found: true,\n    rowNumber,\n    newStatus,\n    createdDate: row.CreatedDate || '',\n    resolvedDate,\n    approvalTypeStored: row.Type || cb.approvalType,\n    details,\n    resultText\n  }\n}];\n"
      },
      "type": "n8n-nodes-base.code",
      "typeVersion": 2,
      "position": [
        220,
        0
      ],
      "id": "code-match-row-1",
      "name": "Match Row & Build Update"
    },
    {
      "parameters": {
        "conditions": {
          "options": {
            "caseSensitive": true,
            "leftValue": "",
            "typeValidation": "strict"
          },
          "conditions": [
            {
              "leftValue": "={{ $json.found }}",
              "rightValue": true,
              "operator": {
                "type": "boolean",
                "operation": "true",
                "singleValue": true
              }
            }
          ],
          "combinator": "and"
        }
      },
      "type": "n8n-nodes-base.if",
      "typeVersion": 2.2,
      "position": [
        460,
        0
      ],
      "id": "if-found-row-1",
      "name": "Found Row?"
    },
    {
      "parameters": {
        "method": "PUT",
        "url": "=https://sheets.googleapis.com/v4/spreadsheets/1lVPDfBIyFNGt3zKf3Xb3tUSaIRkIi6IZCKCtHtYj-c8/values/Approvals!D{{ $json.rowNumber }}:F{{ $json.rowNumber }}?valueInputOption=RAW",
        "authentication": "predefinedCredentialType",
        "nodeCredentialType": "googleSheetsOAuth2Api",
        "sendBody": true,
        "specifyBody": "json",
        "jsonBody": "={{ JSON.stringify({ values: [[ $json.newStatus, $json.createdDate, $json.resolvedDate ]] }) }}",
        "options": {}
      },
      "type": "n8n-nodes-base.httpRequest",
      "typeVersion": 4.2,
      "position": [
        700,
        -100
      ],
      "id": "http-update-approval-1",
      "name": "Update Approval Status",
      "credentials": {
        "googleSheetsOAuth2Api": {
          "name": "<your credential>"
        }
      }
    },
    {
      "parameters": {
        "resource": "callback",
        "operation": "answerQuery",
        "queryId": "={{ $('Match Row & Build Update').first().json.callbackQueryId }}"
      },
      "type": "n8n-nodes-base.telegram",
      "typeVersion": 1.2,
      "position": [
        940,
        0
      ],
      "id": "telegram-answer-query-1",
      "name": "Answer Callback Query",
      "credentials": {
        "telegramApi": {
          "name": "<your credential>"
        }
      }
    },
    {
      "parameters": {
        "resource": "message",
        "operation": "editMessageText",
        "chatId": "={{ $('Match Row & Build Update').first().json.chatId }}",
        "messageId": "={{ $('Match Row & Build Update').first().json.messageId }}",
        "text": "={{ $('Match Row & Build Update').first().json.resultText }}",
        "reply_markup": "none"
      },
      "type": "n8n-nodes-base.telegram",
      "typeVersion": 1.2,
      "position": [
        1180,
        0
      ],
      "id": "telegram-edit-message-1",
      "name": "Edit Approval Message",
      "credentials": {
        "telegramApi": {
          "name": "<your credential>"
        }
      }
    }
  ],
  "connections": {
    "Approval Callback Listener": {
      "main": [
        [
          {
            "node": "Parse Callback",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Parse Callback": {
      "main": [
        [
          {
            "node": "Read Approvals Sheet",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Read Approvals Sheet": {
      "main": [
        [
          {
            "node": "Match Row & Build Update",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Match Row & Build Update": {
      "main": [
        [
          {
            "node": "Found Row?",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Found Row?": {
      "main": [
        [
          {
            "node": "Update Approval Status",
            "type": "main",
            "index": 0
          }
        ],
        [
          {
            "node": "Answer Callback Query",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Update Approval Status": {
      "main": [
        [
          {
            "node": "Answer Callback Query",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Answer Callback Query": {
      "main": [
        [
          {
            "node": "Edit Approval Message",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  },
  "active": false,
  "settings": {}
}

Credentials you'll need

Each integration node will prompt for credentials when you import. We strip credential IDs before publishing — you'll add your own.

• googleSheetsOAuth2Api
• telegramApi

About this workflow

E - Approval Handler. Uses telegramTrigger, googleSheets, httpRequest, telegram. Event-driven trigger; 8 nodes.

Source: https://gist.github.com/APalermo79/973b0e2d09e7b4163606d578015b1b61 — original creator credit. Request a take-down →

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