N8n Form Automation

The workflow JSON

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{
  "name": "n8n-form-automation",
  "nodes": [
    {
      "parameters": {
        "httpMethod": "POST",
        "path": "register",
        "responseMode": "responseNode",
        "options": {}
      },
      "type": "n8n-nodes-base.webhook",
      "typeVersion": 2.1,
      "position": [
        0,
        0
      ],
      "id": "299c78a8-ac2a-49da-adc6-9d61b06de69f",
      "name": "Register Order Webhook"
    },
    {
      "parameters": {
        "jsCode": "const { z } = require('zod');\n\nconst raw = $input.first().json;\nconst payload = raw.body ?? raw;\n\nconst Base64ImageSchema = z\n  .string({ required_error: 'Image is required' })\n  .trim()\n  .min(1, 'Image is required')\n  .regex(/^[A-Za-z0-9+/]+={0,2}$/, 'Image must be a valid Base64 string');\n\nconst OrderPayloadSchema = z\n  .object({\n    name: z.string({ required_error: 'Name is required' }).trim().min(1, 'Name is required'),\n    phone_calling_code: z\n      .string({ required_error: 'Phone calling code is required' })\n      .trim()\n      .regex(/^\\+\\d{1,4}$/, 'Phone calling code must be an international dial code'),\n    phone: z.string({ required_error: 'Phone is required' }).trim().min(1, 'Phone is required'),\n    product: z.string({ required_error: 'Product is required' }).trim().min(1, 'Product is required'),\n    zip_code: z\n      .string({ required_error: 'ZIP code is required' })\n      .transform((value) => value.replace(/\\D/g, ''))\n      .refine((value) => value.length === 8, 'ZIP code must contain 8 digits'),\n    image: Base64ImageSchema,\n    product_name: z.string().trim().min(1).optional(),\n    phone_country_code: z.string().trim().min(1).optional(),\n    submitted_at: z.string().trim().min(1).optional(),\n  })\n  .passthrough();\n\nconst result = OrderPayloadSchema.safeParse(payload);\n\nif (!result.success) {\n  return [\n    {\n      json: {\n        ...payload,\n        zip_code_digits: '00000000',\n        validation_error: result.error.issues.map((issue) => issue.message).join('. '),\n      },\n    },\n  ];\n}\n\nreturn [\n  {\n    json: {\n      ...result.data,\n      zip_code: result.data.zip_code,\n      zip_code_digits: result.data.zip_code,\n      product_name: result.data.product_name || result.data.product,\n      submitted_at: result.data.submitted_at || new Date().toISOString(),\n      validation_error: '',\n    },\n  },\n];"
      },
      "type": "n8n-nodes-base.code",
      "typeVersion": 2,
      "position": [
        260,
        0
      ],
      "id": "e56ca6d5-c9b1-4468-8d70-e0ef6769ea8d",
      "name": "Validate Payload"
    },
    {
      "parameters": {
        "url": "=https://viacep.com.br/ws/{{ $json.zip_code_digits }}/json/",
        "options": {
          "timeout": 10000
        }
      },
      "type": "n8n-nodes-base.httpRequest",
      "typeVersion": 4.3,
      "position": [
        520,
        0
      ],
      "id": "0e55c2d4-34b5-4ab0-aeb2-1287800005bb",
      "name": "Lookup ZIP Code",
      "onError": "continueRegularOutput"
    },
    {
      "parameters": {
        "jsCode": "const WORKFLOW_NODE = Object.freeze({\n  VALIDATE_PAYLOAD: 'Validate Payload',\n});\n\nconst payload = $(WORKFLOW_NODE.VALIDATE_PAYLOAD).first().json;\nconst viaCepResponse = $input.first().json;\n\nconst ViaCepAdapter = Object.freeze({\n  toAddress(response) {\n    if (response.error) {\n      return {\n        ok: false,\n        message: `ZIP code lookup failed: ${response.error.message || 'unknown error'}`,\n      };\n    }\n\n    if (response.erro === true) {\n      return {\n        ok: false,\n        message: 'ZIP code not found',\n      };\n    }\n\n    if (!response.localidade || !response.uf) {\n      return {\n        ok: false,\n        message: 'ZIP code lookup returned an invalid response',\n      };\n    }\n\n    return {\n      ok: true,\n      city: response.localidade,\n      state: response.uf,\n    };\n  },\n});\n\nfunction buildError(message) {\n  return [\n    {\n      json: {\n        status: 400,\n        message,\n      },\n    },\n  ];\n}\n\nfunction createOrderId() {\n  return `#${Date.now().toString().slice(-6)}`;\n}\n\nfunction formatDateTime(date) {\n  return new Intl.DateTimeFormat('pt-BR', {\n    day: '2-digit',\n    month: '2-digit',\n    year: 'numeric',\n    hour: '2-digit',\n    minute: '2-digit',\n    second: '2-digit',\n    hour12: false,\n    timeZone: 'America/Sao_Paulo',\n  }).format(date);\n}\n\nif (payload.validation_error) {\n  return buildError(payload.validation_error);\n}\n\nconst address = ViaCepAdapter.toAddress(viaCepResponse);\n\nif (!address.ok) {\n  return buildError(address.message);\n}\n\nconst orderId = createOrderId();\nconst dateTime = formatDateTime(new Date());\n\nreturn [\n  {\n    json: {\n      status: 200,\n      message: 'Order created successfully',\n      orderId,\n      order_id: orderId,\n      city: address.city,\n      state: address.state,\n      product: payload.product_name,\n      product_name: payload.product_name,\n      dateTime,\n      date_time: dateTime,\n    },\n  },\n];"
      },
      "type": "n8n-nodes-base.code",
      "typeVersion": 2,
      "position": [
        780,
        0
      ],
      "id": "7348d5f8-5a2a-47e0-a7b7-47f0d55d8e09",
      "name": "Build Workflow Response"
    },
    {
      "parameters": {
        "respondWith": "json",
        "responseBody": "={{ $json }}",
        "options": {
          "responseCode": "={{ $json.status }}",
          "responseHeaders": {
            "entries": [
              {
                "name": "Content-Type",
                "value": "application/json"
              },
              {
                "name": "Access-Control-Allow-Origin",
                "value": "*"
              }
            ]
          }
        }
      },
      "type": "n8n-nodes-base.respondToWebhook",
      "typeVersion": 1.1,
      "position": [
        1040,
        0
      ],
      "id": "b3cd3869-0be3-4fa9-9214-22a13ff85258",
      "name": "Respond to Frontend"
    }
  ],
  "connections": {
    "Register Order Webhook": {
      "main": [
        [
          {
            "node": "Validate Payload",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Validate Payload": {
      "main": [
        [
          {
            "node": "Lookup ZIP Code",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Lookup ZIP Code": {
      "main": [
        [
          {
            "node": "Build Workflow Response",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Build Workflow Response": {
      "main": [
        [
          {
            "node": "Respond to Frontend",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  },
  "active": false,
  "settings": {
    "executionOrder": "v1"
  },
  "versionId": "87c697d6-6d3e-4a8a-b1ba-5a5c4867e04d",
  "meta": {
    "templateCredsSetupCompleted": true
  },
  "nodeGroups": [],
  "tags": []
}

About this workflow

n8n-form-automation. Uses httpRequest. Webhook trigger; 5 nodes.

Source: https://github.com/GuilhermeAlbert/n8n-form/blob/main/n8n/workflows/n8n-form-automation.json — original creator credit. Request a take-down →

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