![]() The sample invoice data is defined as a JSON object. _REQUEST(requestPayload, function(err, response)Ĭreate the main function (GenInvoice.js) to provide the sample invoice data to be displayed in the generated PDF document. Return new Promise(function(resolve, reject) In the sample code of this article, the doRequest function is called to get the content of an image file from a web URL. The doRequest function returns a Promise object which eventually will return a resolved state or a rejected state. npm initĬreate a Node module (RequestUtil.js) to handle requests. The sample code shown in this article is partly based on another article Generating a PDF in Nodejs ( ).įrom the command line or terminal, add the dependency libraries after project initialization. However, for demonstration purpose, this article shows how these two libraries can be used to load an image from a web URL and display it in the PDF document. During implementation, you only need either Request or axios for requests/responses. Other libraries used in this example are Request ( ) and axios ( ). The documentation can be found at the website ( ). The JavaScript PDF document generation library for Node.js used in this example is PDFKit ( ). There are also backend systems such as Enterprise Resource Planning (ERP), Supply Chain Management, Blockchain network etc. A business application in BTP typically includes a user interface, microservices that contain business logic, and technical operations. SAP Business Technology Platform (BTP) provides a fast and easy way to create, run, manage, and scale business applications in the cloud. This blog post shows examples of how to generate a PDF document in business applications using Node.js. Often enough, a business application needs to generate PDF documents based on business data and images (such as receipts, certificates, etc.). We also have a blog post that guides you through generating PDFs from HTML with Node.js.Portable Document Format (PDF) is one of the most common document formats used for electronic documents in businesses due to its nature of being read-only, having rich formatting styles, and being compact in size, etc. If you’re interested in automating the PDF generation process, take a look at our PDF Generation SDK or our PDF Generation API, both of which let you generate PDF invoices from an HTML document. If you want to display the PDF in a powerful PDF viewer or add advanced functionality such as digital signatures or PDF annotations, we recommend you give our server-backed deployment of PSPDFKit for Web a try. You can check out the source code on GitHub. In the example above, you learned about PDFKit and used it to dynamically generate a PDF invoice from a simple object-based data model. It’s ideally suited for tasks like dynamically generating PDF invoices for your web server. PDFKit allows us to generate PDF documents in Node.js and the browser. In any case, once you add the table headers and footers, you’ll have a full invoice generated on demand using pdfkit in Node.js. You can see the complete example code on GitHub. To keep the code examples in this post concise, we stripped out table headers and footers, along with some utility functions for formatting currency and dates. For now, start with generating the header and footer of the invoice: Then create stub methods for the four sections above. To create an empty PDF document, use the PDFDocument constructor of pdfkit. Your invoice will consist of four visual parts:Ī header that contains information about your company, including your company’s logo. Start by creating a function, createInvoice(invoice, path), which uses the invoice object to create a valid PDF invoice and then saves it to a file located at path. With this data model, you’re now ready to generate a PDF file. invoice_nr is used to identify the invoice. The subtotal key contains the sum of all items in cents, and the paid field allows you to specify how much was already paid for this invoice. The items key contains an array of all items you want to print on the invoice (the amount is the sum for all pieces of this item in cents). In the above object, there’s a shipping key that contains all the shipping information to print on the invoice.
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