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Productive. Reliable. Fast. A productive web framework that does not compromise speed or maintainability.
Security advisory:
This version has known vulnerabilities.
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Files
lib/mix/tasks/phx.gen.presence.ex
defmodule Mix.Tasks.Phx.Gen.Presence do
@shortdoc "Generates a Presence tracker"
@moduledoc """
Generates a Presence tracker.
$ mix phx.gen.presence
$ mix phx.gen.presence MyPresence
The argument, which defaults to `Presence`, defines the module name of the
Presence tracker.
Generates a new file, `lib/my_app_web/channels/my_presence.ex`, where
`my_presence` is the snake-cased version of the provided module name.
"""
use Mix.Task
@doc false
def run([]) do
run(["Presence"])
end
def run([alias_name]) do
if Mix.Project.umbrella?() do
Mix.raise(
"mix phx.gen.presence must be invoked from within your *_web application's root directory"
)
end
context_app = Mix.Phoenix.context_app()
otp_app = Mix.Phoenix.otp_app()
web_prefix = Mix.Phoenix.web_path(context_app)
inflections = Mix.Phoenix.inflect(alias_name)
inflections =
Keyword.put(inflections, :module, "#{inflections[:web_module]}.#{inflections[:scoped]}")
binding =
inflections ++
[
otp_app: otp_app,
pubsub_server: Module.concat(Mix.Phoenix.context_base(context_app), "PubSub")
]
files = [
{:eex, "presence.ex", Path.join(web_prefix, "channels/#{binding[:path]}.ex")}
]
Mix.Phoenix.copy_from(paths(), "priv/templates/phx.gen.presence", binding, files)
Mix.shell().info("""
Add your new module to your supervision tree,
in lib/#{otp_app}/application.ex:
children = [
...
#{binding[:module]}
]
You're all set! See the Phoenix.Presence docs for more details:
https://hexdocs.pm/phoenix/Phoenix.Presence.html
""")
end
defp paths do
[".", :phoenix]
end
end