Below is a quick reference that can be used to translate traditional extensions.conf dialplan concepts to their analog in extensions.lua.
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| exclude | extensions.conf|extensions.lua |
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Extension Patterns
Extension pattern matching syntax on logic works the same for extensions.conf and extensions.lua.
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extensions.conf| Code Block |
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[users]
exten => _1XX,1,Dial(SIP/${EXTEN})
exten => _2XX,1,Voicemail(${EXTEN:1})
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extensions.lua| Code Block |
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extensions = {}
extensions.users = {}
extensions.users["_1XX"] = function(c, e)
app.dial("SIP/" .. e)
end
extensions.users["_2XX"] = function(c, e)
app.voicemail("1" .. e:sub(2))
end
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Context Includes
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extensions.conf| Code Block |
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[users]
exten => 100,1,Noop
exten => 100,n,Dial("SIP/100")
[demo]
exten => s,1,Noop
exten => s,n,Playback(demo-congrats)
[default]
include => demo
include => users
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extensions.lua| Code Block |
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extensions = {
users = {
[100] = function()
app.dial("SIP/100")
end;
};
demo = {
["s"] = function()
app.playback(demo-congrats)
end;
};
default = {
include = {"demo", "users"};
};
}
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Loops
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extensions.conf| Code Block |
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exten => 100,1,Noop
exten => 100,n,Set(i=0)
exten => 100,n,While($[i < 10])
exten => 100,n,Verbose(i = ${i})
exten => 100,n,EndWhile
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extensions.lua| Code Block |
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i = 0
while i < 10 do
app.verbose("i = " .. i)
end
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Variables
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extensions.conf| Code Block |
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exten => 100,1,Set(my_variable=my_value)
exten => 100,n,Verbose(my_variable = ${my_variable})
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extensions.lua| Code Block |
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channel.my_variable = "my_value"
app.verbose("my_variable = " .. channel.my_variable:get())
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Applications
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extensions.conf| Code Block |
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exten => 100,1,Dial("SIP/100",,m)
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extensions.lua| Code Block |
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app.dial("SIP/100", nil, "m")
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Macros/GoSub
Macros can be defined in pbx_lua by naming a context 'macro-*' just as in extensions.conf, but generally where you would use macros or gosub in extensions.conf you would simply use a function in lua.
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extensions.conf| Code Block |
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[macro-dial]
exten => s,1,Noop
exten => s,n,Dial(${ARG1})
[default]
exten => 100,1,Macro(dial,SIP/100)
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extensions.lua| Code Block |
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extensions = {}
extensions.default = {}
function dial(resource)
app.dial(resource)
end
extensions.default[100] = function()
dial("SIP/100")
end
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Goto
While Goto is an extenstions.conf staple, it should generally be avoided in pbx_lua in favor of functions.
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extensions.conf| Code Block |
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[default]
exten => 100,1,Goto(102,1)
exten => 102,1,Playback("demo-thanks")
exten => 102,n,Hangup
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extensions.lua| Code Block |
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extensions = {}
extensions.default = {}
function do_hangup()
app.playback("demo-thanks")
app.hangup()
end
extensions.default[100] = function()
do_hangup()
end
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| Info |
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The app.goto() function will not work as expected in pbx_lua in Asterisk 1.8. If you must use app.goto() you must manually return control back to asterisk using return from the dialplan extension function, otherwise execution will continue after the call to app.goto(). Calls to app.goto() should work as expected in Asterisk 10 but still should not be necessary in most cases. | Code Block |
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| title | In Asterisk 1.8, use return |
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function extension_function(c, e)
return app.goto("default", "100", 1)
-- without that 'return' the rest of the function would execute normally
app.verbose("Did you forget to use 'return'?")
end
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