{"id":8808,"date":"2026-08-05T14:01:03","date_gmt":"2026-08-05T12:01:03","guid":{"rendered":"https:\/\/www.lukaswojcik.com\/blog\/?page_id=8808"},"modified":"2026-08-05T15:36:49","modified_gmt":"2026-08-05T13:36:49","slug":"gtm-datalayer-variable-path-flattener","status":"publish","type":"page","link":"https:\/\/www.lukaswojcik.com\/blog\/en\/toolbox\/gtm-datalayer-variable-path-flattener\/","title":{"rendered":"GTM DataLayer Variable Path Flattener"},"content":{"rendered":"<div class=\"gtm-analyser-container\" style=\"background: var(--bg-panel, #1e1e24); padding: 25px; border-radius: 8px; border: 1px solid var(--border, #2a2a35);\">\n<p style=\"color: var(--text-secondary); margin-bottom: 20px;\">\n        Paste a nested <code>dataLayer<\/code> JSON object to generate exact dot-notation paths for Google Tag Manager variables.\n    <\/p>\n<div style=\"margin-bottom: 15px;\">\n        <label style=\"color: var(--text-primary); font-weight: bold; display: block; margin-bottom: 6px;\">Nested DataLayer Object:<\/label><br \/>\n        <textarea id=\"gtm-dl-input\" style=\"width: 100%; height: 150px; padding: 12px; background: var(--bg-body, #101416); border: 1px solid var(--border); color: var(--text-primary); border-radius: 6px; font-family: monospace; resize: vertical;\">{<br \/>\n  &#8220;event&#8221;: &#8220;purchase&#8221;,<br \/>\n  &#8220;ecommerce&#8221;: {<br \/>\n    &#8220;transaction_id&#8221;: &#8220;T_8493021&#8221;,<br \/>\n    &#8220;value&#8221;: 349.99,<br \/>\n    &#8220;items&#8221;: [<br \/>\n      { &#8220;item_id&#8221;: &#8220;RPI5_8GB&#8221;, &#8220;price&#8221;: 89.99 }<br \/>\n    ]<br \/>\n  }<br \/>\n}<\/textarea>\n    <\/div>\n<p>    <button id=\"flatten-dl-btn\" class=\"button\" style=\"background: var(--accent, #2ba6df); color: #0b1114; border: none; padding: 12px 24px; border-radius: 6px; font-weight: 700; cursor: pointer; margin-bottom: 20px;\">Generate GTM Variable Paths<\/button><\/p>\n<div id=\"gtm-dl-results\"><\/div>\n<\/div>\n<p><script>\ndocument.getElementById(\"flatten-dl-btn\").addEventListener(\"click\", () => {\n    const input = document.getElementById(\"gtm-dl-input\").value.trim();\n    const results = document.getElementById(\"gtm-dl-results\");<\/p>\n<p>    try {\n        const obj = JSON.parse(input);\n        const paths = [];<\/p>\n<p>        const recurse = (current, propPath) => {\n            if (Object(current) !== current) {\n                paths.push({ path: propPath, value: current });\n            } else if (Array.isArray(current)) {\n                current.forEach((item, idx) => recurse(item, propPath ? propPath + \".\" + idx : String(idx)));\n            } else {\n                for (const key in current) {\n                    if (Object.prototype.hasOwnProperty.call(current, key)) {\n                        recurse(current[key], propPath ? propPath + \".\" + key : key);\n                    }\n                }\n            }\n        };<\/p>\n<p>        recurse(obj, \"\");<\/p>\n<p>        const rows = paths.map(row => [\n            \"<\/p>\n<tr style='border-bottom:1px solid var(--border);'>\",\n            \"  <\/p>\n<td style='padding:10px; color:#51cf66; font-family:monospace;'>\" + row.path + \"<\/td>\n<p>\",\n            \"  <\/p>\n<td style='padding:10px; color:var(--text-primary); font-family:monospace;'>\" + String(row.value) + \"<\/td>\n<p>\",\n            \"<\/tr>\n<p>\"\n        ].join(\"\"));<\/p>\n<p>        results.innerHTML = [\n            \"<\/p>\n<table style='width:100%; border-collapse:collapse; background:var(--bg-body); border-radius:6px; overflow:hidden;'>\",\n            \"  <\/p>\n<thead>\n<tr style='border-bottom:1px solid var(--border); text-align:left;'>\",\n            \"    <\/p>\n<th style='padding:10px; color:var(--text-secondary);'>GTM Variable Path<\/th>\n<p>\",\n            \"    <\/p>\n<th style='padding:10px; color:var(--text-secondary);'>Extracted Value<\/th>\n<p>\",\n            \"  <\/tr>\n<\/thead>\n<p>\",\n            \"  <\/p>\n<tbody>\" + rows.join(\"\") + \"<\/tbody>\n<p>\",\n            \"<\/table>\n<p>\"\n        ].join(\"\");<\/p>\n<p>    } catch (e) {\n        results.innerHTML = \"<\/p>\n<p style='color:#ff6b6b;'>Invalid JSON structure.<\/p>\n<p>\";\n    }\n});\ndocument.getElementById(\"flatten-dl-btn\").click();\n<\/script><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Flatten nested dataLayer JSON structures into copy-ready dot-notation paths for Google Tag Manager variables.<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":38,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"template-tool-base.php","meta":{"footnotes":""},"class_list":["post-8808","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.1 - 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