![]() ![]() ![]() In the example of above the diagram will go from top to the bottom. You need to define the flowchart orientation at the beggining. The Mermaid flowcharts are composed of nodes: shapes, edges, arrows and lines. I could represent this in code like this: ```mermaidĪnd this code will render the following diagram: Diagram with MermaidĪs you can see, the syntax is quite simple and easy to understand. The "A" node will have arrows to "B" and "C", and both "B" and "C" have arrows with a "D" node. How to use Mermaid tags?Īll you need to do is to define the diagram using a simple text-based syntax and then render the diagram using the `mermaid` tag.įor example, let's say I want a flowchart diagram of 4 components. In this article you will know how to use Mermaid to design diagrams with examples using the `mermaid` tags. It's also open source and you can use it in GitHub. It is easy to use and can be used to create diagrams using simple text commands. Mermaid is a popular library for creating diagrams and flowcharts from text. ![]() With flowcharts, you can illustrate the sequence of steps in a process, the different components of a system, or the relationship between elements (like classes). READMEs are a great way to provide a visual description of how your project works, from overall architecture to specific details. And on GitHub, we have a native solution within our Markdown files (like READMEs) for creating these diagrams. When explaining this part to our friends, it can be very helpful for them to also have clear diagrams of the core parts of a system. or maybe a timeline using a start date and end date of issues.Īrchitecturally, I would like to find a method of rendering the diagrams without an external service whether that is via another serverless application or directly in Forge.Many times when we think about how to solve a problem we choose to draw a flowchart or another type of visualization with the aim that everything is clear and that we don't miss anything by the end. I would like to add more dynamic charts, for example to pull in Jira issues and display a pie chart of the statistics. In my case, I did not need to rewrite the Mermaid libraries, but instead just extended the Mermaid project. I learned that Forge apps can be used to build on top of other solutions. Working with Forge has been a pleasure, and the main accomplishment that I have personally gained is how quick it has been for me to get prototypes working. I ended up not going with PlantUML because it did not secure the connection with SSL and made the whole page appear unsecured. PlantUML was more fully featured with support for more diagram types than Mermaid. I looked at both using Mermaid and PlantUML. In my second spike I investigated further into using external services to provide the rendering. Given the time limitation for completing the project, I chose not to rewrite a rendering engine. It became apparent that I could not use most libraries as they all required a window DOM. The first spike I conducted was to determine libraries that I could use so that I could render the images in Forge. So I started spikes to determine the paths I could take. Challenges I ran intoįrom the beginning, I did not know how to approach the problem, all I wanted was to use markup to create diagrams. The app encodes the markdown added through the macro and displays an image sourced from the live editor project. Macro - to provide the diagram image and the configuration formįunction - to define the behaviour of rendering the diagram and the formĬredit should be given to the Mermaid project for defining the markdown rendering and Mermaid’s Live Editor project for rendering the diagram to an image format. The app was created with Forge using the the following modules: Credit should be given to Mermaid and the live editor for creating the markup rendering. This a good time to point out that the app I have written is solely for integrating Mermaid’s Live Editor project into Confluence using the Forge framework. What it doesĪ ->|Get money| B(Go shopping)Īnd a bunch of other ‘experimental’ types. I did some research and found two popular alternatives: Mermaid and PlantUML (more on this with challenges later). So I wanted to find a more consistent method, that would allow me to just focus on the content and not the style. I like graphical user interfaces as much as everyone else as they naturally have an easier learning curve, however I found this was overkill for some simple diagram types, for example flow diagrams would have different padding and spacing depending on the mood I was on that day. Have you ever wanted to create diagrams in a standard format, without the need to click and drag around? Or you wanted people to make diagrams where the look and feel were automatically consistent? ![]()
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