Created
July 6, 2021 02:25
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Parse Html Mail Template with node.js replacing string between brackets.
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| // Require the module | |
| const { parseMailTemplate } = require("./path/to/parseMailTemplate"); | |
| // The params we need to pass | |
| const html = '<html lang="es"><head><meta charset="utf-8"><title>Email Verification</title></head><body><h1>Hey, {{ name }}</h1><p>You have just created an account on <strong>{{ company }}</strong>. Please click the following <a href="{{ link }}" target="_blank">link</a> so you can start using your account.</p></body></html>'; | |
| const data = { | |
| name: "Jhon Doe", | |
| company: "My awesome company", | |
| link: "http://example.com, | |
| }; | |
| // Call the function | |
| parseMailTemplate(html, data, (error, parsedHtml) => { | |
| if (error) console.log(error); | |
| console.log(parsedHtml); | |
| // Do whatever you want with your parsed tamplate | |
| }); | |
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| /** | |
| * Parse Html Mail Template | |
| * Replace all strings between brackets with the given data | |
| * | |
| * @param {string} html The hatml sting | |
| * @param {object} data The values taht will replace all strings between brackets | |
| * @param {function} next Callback function | |
| * | |
| * @returns {string} parsedHtml || {object} error | |
| */ | |
| exports.parseMailTemplate = (html, data, next) => { | |
| let error, parsedHtml; | |
| // If not html given, sets error | |
| if (!html) { | |
| error = { | |
| name: "RequiredValue", | |
| message: "You need to specify a template to parse", | |
| }; | |
| } | |
| // If not data given sets error | |
| if (!data) { | |
| error = { name: "RequiredValue", message: "You need to specify the data" }; | |
| } | |
| // If error retunn error | |
| if (error) { | |
| if (next && typeof next === "function") next(error, null); // If there is a callback function, send the error | |
| return error; | |
| } | |
| // Repalces string between brackets | |
| parsedHtml = html.replace(/\{\{(.+?)\}\}/g, (_, g) => { | |
| // If there is a wrong data index, returns error | |
| if (!data[g.trim()]) { | |
| error = { name: "IndexDoesNotExists", message: "Index missing on data" }; | |
| if (next && typeof next === "function") next(error, null); | |
| return error; | |
| } | |
| return data[g.trim()]; | |
| }); | |
| if (next && typeof next === "function") next(error, parsedHtml); // If there is a callback function, send the parsed html | |
| return parsedHtml; | |
| }; |
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