If your app needs data and you want it to run offline, you’ll have to store (cache) that data in the browser to interact with it. Later, when the app comes back online, we can make the server call using the cached data.

We would then need to consider strategies for storing (caching) data in the browser inside the except block. If we find the app is offline, the code inside the except block runs. In the above example, we use the try/except strategy. # save the data in the browserĪ is raised anytime an offline app attempts to communicate with the server. call ( 'save_data', data ) except anvil. If this returns False, subsequent communications to the server will fail. There are two ways to check if an app is online. If you visit an Anvil app in a browser and lose connection, the app will continue to run as described above. Installing an Anvil app isn’t necessary for an app to work offline.

In Chrome for Android or Safari for iPhone, there is an option to ‘Add to home screen’. On Chrome desktop, the option is available next to the address bar. Specific instructions for installing an Anvil app depends on the platform. Installing Anvil AppsĪnvil apps are progressive web apps (PWAs) and can be installed almost like native apps. This section explores some offline strategies to handle code that communicates with the server. This includes accessing the Users Service, working with Data Tables or any use of.

However, any code that tries to communicate with the server will fail with an.

When an app is offline, client-side code (Forms and Modules) will continue to work. In other words, an app’s client-side code will continue to work if the device loses its internet connection.

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