Adding your existing Julia code into Genie apps
If you have existing Julia code (modules and files) which you'd like to quickly integrate into a web app, Genie provides an easy way to add and load your code.
Adding your Julia code to the
If you have some Julia code which you'd like to integrate in a Genie app, the simplest thing is to add the files to the
lib/ folder. The files (and folders) in the
lib/ folder are automatically loaded by Genie recursively. This means that you can also add folders under
lib/, and they will be recursively loaded (included) into the app. Beware though that this only happens when the Genie app is initially loaded. Hence, an app restart will be required if you add files and folders after the app is started.
Genie won't create the
lib/ folder by default. If the
lib/ folder is not present in the root of the app, just create it yourself:
Once your code is added to the
lib/ folder, it will become available in your app's environment. For example, say we have a file called
# lib/MyLib.jl module MyLib using Dates function isitfriday() Dates.dayofweek(Dates.now()) == Dates.Friday end end
Assuming that the name of your Genie app (which is also the name of your main module in
MyGenieApp, the modules loaded from
lib/ will be available under the
MyGenieApp namespace as
Instead of using the actual Genie app (main module) name, we can also use the alias
So we can reference and use our modules in
routes.jl as follows:
# routes.jl using Genie using MyGenieApp.MyLib # or using ..Main.UserApp.MyLib route("/friday") do MyLib.isitfriday() ? "Yes, it's Friday!" : "No, not yet :(" end
lib/ folder to host your Julia code so that Genie knows where to look in order to load it and make it available throughout the application.