I need to create a modal to show the profile of a user, but i don’t know how i can do this implementation within the live view. Does anyone know, or have you used something similar? 
The blog post above might be outdated. For a “fresher” approach see the modal generated in a new live view project:
mix phx.new --live app
mix phx.gen.live Accounts User users name:string age:integer
The relevant file is in lib/app_web/live/modal_component.ex.
https://hexdocs.pm/phoenix/Mix.Tasks.Phx.Gen.Live.html#content
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