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Create multi-language app (EN/DE/ES)


I’m interesting in create an app available in more than one lenguaje. I found that Flask has the option as shows the following link:

Do you know if is possible to develop in Dash??


It is certainly possible to do it in Dash following a similar approach as in the link you shared. One could use the structure of a multi-page application with a page template that can be filled by text in speficic language, just like they did using json files.

@AnnMarie, it could be a good functionality to be demo-ed with the /pages features…

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Hi @isaamarod

Yes, as @jlfsjunior mentioned, it’s possible to make an app like this with Dash, and it’s much, much easier with Dash than in the blog post you linked to, especially if you use the new /pages feature.

In the blog, they use flask to render a page template that uses the Jinja2 template engine as described here. With Dash, the “template” is the page layout. If you make the layout a function, then you can pass variables to it from the URL using query strings - or as path variables.

For example:

if the URL is: (query string)

or a path variable:

the language parameter will be passed to the layout - for example:

def layout(lang="english", **other_unknown_query_strings):
    translate = {"english": {"greeting":"hello"}, "french": {"greeting": "bonjour"}}
    return html.Div(translate[lang]["greeting"])

This example will render:

If no language is specified, it will show the default english greeting of “hello”

Note - /page will be in a future release of Dash, but for now, you can try it out in dash-labs


Thank you for your help !! :smile:

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