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Added the ability to override the default gtm url #129

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Added the ability to override the default gtm url #129

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1 change: 1 addition & 0 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -205,6 +205,7 @@ Look for gtm_auth and gtm_preview
|events| `Object`| No | Additional events such as 'gtm.start': new Date().getTime(),event:'gtm.js'.|
|auth| `String` | No | used to set environments. |
|preview| `String` | No | used to set environments, something like `env-00`. |
|url| `String` | No | used to override the default gtm url. |


### Note:
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9 changes: 6 additions & 3 deletions src/Snippets.js
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Expand Up @@ -3,21 +3,24 @@ import warn from './utils/warn'
// https://developers.google.com/tag-manager/quickstart

const Snippets = {
tags: function ({ id, events, dataLayer, dataLayerName, preview, auth }) {
tags: function ({ id, events, dataLayer, dataLayerName, preview, auth, url }) {
const gtm_auth = `&gtm_auth=${auth}`
const gtm_preview = `&gtm_preview=${preview}`
const pattern = /^(https:\/\/)/;

if (!id) warn('GTM Id is required')

if(!pattern.test(url)) warn('URL needs to be a valid url')

const iframe = `
<iframe src="https://www.googletagmanager.com/ns.html?id=${id}${gtm_auth}${gtm_preview}&gtm_cookies_win=x"
<iframe src="${url}/ns.html?id=${id}${gtm_auth}${gtm_preview}&gtm_cookies_win=x"
height="0" width="0" style="display:none;visibility:hidden" id="tag-manager"></iframe>`

const script = `
(function(w,d,s,l,i){w[l]=w[l]||[];
w[l].push({'gtm.start': new Date().getTime(),event:'gtm.js', ${JSON.stringify(events).slice(1, -1)}});
var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';
j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl+'${gtm_auth}${gtm_preview}&gtm_cookies_win=x';
j.async=true;j.src='${url}/gtm.js?id='+i+dl+'${gtm_auth}${gtm_preview}&gtm_cookies_win=x';
f.parentNode.insertBefore(j,f);
})(window,document,'script','${dataLayerName}','${id}');`

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5 changes: 3 additions & 2 deletions src/TagManager.js
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Expand Up @@ -29,14 +29,15 @@ const TagManager = {
dataScript
}
},
initialize: function ({ gtmId, events = {}, dataLayer, dataLayerName = 'dataLayer', auth = '', preview = '' }) {
initialize: function ({ gtmId, events = {}, dataLayer, dataLayerName = 'dataLayer', auth = '', preview = '', url = "https://www.googletagmanager.com"}) {
const gtm = this.gtm({
id: gtmId,
events: events,
dataLayer: dataLayer || undefined,
dataLayerName: dataLayerName,
auth,
preview
preview,
url
})
if (dataLayer) document.head.appendChild(gtm.dataScript)
document.head.insertBefore(gtm.script(), document.head.childNodes[0])
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