Generate Weekly Article Digest from Postgres

The workflow JSON

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{
  "name": "Weekly Digest Generator",
  "nodes": [
    {
      "parameters": {
        "rule": {
          "interval": [
            {
              "field": "cronExpression",
              "expression": "0 9 * * 1"
            }
          ]
        }
      },
      "name": "Weekly Schedule",
      "type": "n8n-nodes-base.scheduleTrigger",
      "typeVersion": 1,
      "position": [
        250,
        300
      ]
    },
    {
      "parameters": {
        "operation": "executeQuery",
        "query": "SELECT id, title, url, source, published_at, category, summary FROM articles WHERE published_at >= NOW() - INTERVAL '7 days' ORDER BY category, published_at DESC"
      },
      "name": "Fetch Articles",
      "type": "n8n-nodes-base.postgres",
      "typeVersion": 1,
      "position": [
        500,
        300
      ]
    },
    {
      "parameters": {
        "jsCode": "const articles = $input.all();\nconst grouped = {};\nfor (const item of articles) {\n  const cat = item.json.category || 'general';\n  if (!grouped[cat]) grouped[cat] = [];\n  grouped[cat].push(item.json);\n}\nlet md = '# AI News Weekly Digest\\n\\n';\nfor (const [cat, items] of Object.entries(grouped)) {\n  md += `### ${cat.toUpperCase()}\\n\\n`;\n  for (const a of items) {\n    md += `- **[${a.title}](${a.url})**\\n  ${a.summary?.slice(0,200) || ''}\\n  *${a.source}*\\n\\n`;\n  }\n}\nreturn [{ json: { markdown: md } }];"
      },
      "name": "Generate Markdown",
      "type": "n8n-nodes-base.code",
      "typeVersion": 2,
      "position": [
        750,
        300
      ]
    }
  ],
  "connections": {
    "Weekly Schedule": {
      "main": [
        [
          {
            "node": "Fetch Articles",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Fetch Articles": {
      "main": [
        [
          {
            "node": "Generate Markdown",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  }
}

About this workflow

Weekly Digest Generator. Uses postgres. Scheduled trigger; 3 nodes.

Source: https://github.com/statnyk/ai-digest-rag/blob/f331ffcc6cc959966718c37e9241e5faec038e62/n8n-workflows/weekly-digest.json — original creator credit. Request a take-down →

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