[SOLVED] Using Dynamic Variable Names

[Tal]

Is there any way to use dynamic names for variables?

Ex:

:global VALUE true

:foreach varname in "VAR1\n\rVAR2\n\rVAR3" \
do={
	:global "$varname" $VALUE
}

I would think that the above code should work, but it doesn’t, because :global doesn’t like taking a variable name from a variable. Any way to get around this?

[favincen]

This code doesn’t work. But it may give a hint toward a solution :

 :foreach varname in={"VAR1" ; "VAR2" ; "VAR3"  } do={:parse ":global $varname \$VALUE" }

Hope it can help.

[favincen]

Using “:execute” instead of “:parse”, it works :

:foreach varname in={"VAR1" ; "VAR2" ; "VAR3"  } do={:execute ":global $varname \$VALUE" }

[Tal]

@favincen

Using “:execute” instead of “:parse”, it works :

:foreach varname in={"VAR1" ; "VAR2" ; "VAR3"  } do={:execute ":global $varname \$VALUE" }

I used $VALUE instead of $VALUE, but it worked perfectly.

Thanks guys.

[favincen]

@Tal

I used $VALUE instead of $VALUE, but it worked perfectly.

Hi Tal,

Without "" it works for most values. But If VALUE contains, for example, a string with spaces or special characters, “$VALUE” won’t work while “$VALUE” will…

BTW, a warning: I may have missed something but AFAIK, if the “:execute” f command fails, you get no error message of any kind.

Fabrice

[Tal]

@favincen

@Tal

I used $VALUE instead of $VALUE, but it worked perfectly.

Hi Tal,

Without "" it works for most values. But If VALUE contains, for example, a string with spaces or special characters, “$VALUE” won’t work while “$VALUE” will…

BTW, a warning: I may have missed something but AFAIK, if the “:execute” f command fails, you get no error message of any kind.

Fabrice

It didn’t seem to work for me when I used “$VALUE”, but I’ll try again. Pretty useful bit of info - thanks.

[Winand]

@graybeam

This code doesn’t work. But it may give a hint toward a solution :

You just need square brackets:

foreach varname in={"VAR1"; "VAR2"; "VAR3"} do={[parse "global $varname true"]}

[iamarpit]

@Ibrahim92

You just need square brackets:

foreach varname in={"VAR1"; "VAR2"; "VAR3"} do={[parse "global $varname true"]}

yeah but this doesn’t work in this setting, if you put space in the values

foreach key,value in={"VAR1"="foo with space"; "VAR2"="bar"} do={[parse "global $key $value"]}

[PackElend]

I hope that thread is still active as I have a similar challenge

[admin@MikroTik] > :global vlancommon {id=100; name="VLAN_COMMON" ;  comment="COMMON SERVICES AND DEVICES / OFFICE"      }
[admin@MikroTik] > :put ($vlancommon)
comment=COMMON SERVICES AND DEVICES / OFFICE;id=100;name=VLAN_COMMON
[admin@MikroTik] > :put ($vlancommon->"name")
vlancommon 
[admin@MikroTik] > :put ([ :toarray "UP, vlancommon  ,KIDS" ]->1)
vlancommon 
[admin@MikroTik] > :put (:parse "\$([ :toarray "UP, vlancommon  ,KIDS" ]->1)"->"name")
comment=COMMON SERVICES AND DEVICES / OFFICE;id=100;name=VLAN_COMMON

but I would expect

VLAN_COMMON

in the last line.

When I start moving around the quotes, the result is even weirder.
Any idea what the last command has to look like to get the second element of the array vlancommon ?

Last but not least, how to modify when I going to use capital later and/or symbols in the variable name and/or array key name so that they have to be put in quotes?

thx
stefan

[PackElend]

could solve it:
had do add another pair of (), to enclose the parse command

Any idea what the last command has to look like to get the second element of the array vlancommon ?

:put ( ( :parse "\$([ :toarray "UP, vlancommon  ,KIDS" ]->1)" ) -> "name")

.
and pair of "

Last but not least, how to modify when I going to use capital later and/or symbols in the variable name and/or array key name so that they have to be put in quotes?

:put ( ( :parse "\$\"([ :toarray "UP, vlancommon  ,KIDS" ]->1)\"" )->"name")

[rextended]

Returning to OP question, is simple:

concatenate values to create variable name

search tag # rextended dynamic variables This: :global $wan1 1; :put ("wanSta" . $wan1); :set ("wanStatus" . $wanIndex) 10 give two errors: first one because the $ on front of wan1 is forbiden when declaring a global or local variable (I use 6.47.10) second because the wan1 is undefined on second line for the reason writed before third on last line you use another name wanStatus The correct syntax is: :global wan1 1 :put "wanSta$wan1" :set wanSta1 10 but obviously do not create or s…

The soluction is:
:global variablename "test"

Create or set a value (on same command)

[:parse ":global $variablename "REX1""]

:put $test

Set a value (or simply apply previous command)

[:parse "global $variablename;:set $variablename "REX2""]

:put $test

For read the variable inside another declared variable:

:global testx
[:parse "global $variablename;:global testx $$variablename"]

:put $testx

[PackElend]

and pair of "

Last but not least, how to modify when I going to use capital later and/or symbols in the variable name and/or array key name so that they have to be put in quotes?

:put ( ( :parse "\$\"([ :toarray "UP, vlancommon  ,KIDS" ]->1)\"" )->"name")

I made an error here; did not test “vlan_common”.
Any idea how to make

:put ( ( :parse "\$\"([ :toarray "UP, vlan_common  ,KIDS" ]->1)\"" )->"name")

work?

[rextended]

for example, start to remove all significant spaces:

:put ">$([:toarray "UP, vlancommon  ,KIDS"]->1)<"
>vlancommon  <
:put ">$([:toarray "UP,vlancommon,KIDS"]->1)<"
>vlancommon<

[PackElend]

for example, start to remove all significant spaces:

:put ">$([:toarray "UP, vlancommon  ,KIDS"]->1)<"
>vlancommon  <
:put ">$([:toarray "UP,vlancommon,KIDS"]->1)<"
>vlancommon<

try the same but replace vlancommon by vlan**_**common
result shall be:

VLAN_COMMON

from

[admin@MikroTik] > :global "vlan_common" {id=100; name="VLAN_COMMON" ;  comment="COMMON SERVICES AND DEVICES / OFFICE"      }

[rextended]

whu replace “vlancommon by vlan_common”?
the problem are the spaces between elements on array…

and parse do not give results, you must USE parse…

:global vlancommon {id=100;name="VLAN_COMMON";comment="COMMON SERVICES AND DEVICES / OFFICE"}
:put ($vlancommon)
:put ($vlancommon->"name")
:put ([:toarray "UP,vlancommon,KIDS"]->1)
:global testx
[:parse "global vlancommon;:global testx (\$$([:toarray "UP,vlancommon,KIDS"]->1)->\"id\")"]
:put $testx
[:parse "global vlancommon;:global testx (\$$([:toarray "UP,vlancommon,KIDS"]->1)->\"name\")"]
:put $testx
[:parse "global vlancommon;:global testx (\$$([:toarray "UP,vlancommon,KIDS"]->1)->\"comment\")"]
:put $testx

[mikro@tik] > :global vlancommon {id=100;name=“VLAN_COMMON”;comment=“COMMON SERVICES AND DEVICES / OFFICE”}
[mikro@tik] > :put ($vlancommon)
comment=COMMON SERVICES AND DEVICES / OFFICE;id=100;name=VLAN_COMMON
[mikro@tik] > :put ($vlancommon->“name”)
VLAN_COMMON
[mikro@tik] > :put ([:toarray “UP,vlancommon,KIDS”]->1)
vlancommon
[mikro@tik] > :global testx
[mikro@tik] > [:parse “global vlancommon;:global testx ($$([:toarray “UP,vlancommon,KIDS”]->1)->"id")”]
[mikro@tik] > :put $testx
100
[mikro@tik] > [:parse “global vlancommon;:global testx ($$([:toarray “UP,vlancommon,KIDS”]->1)->"name")”]
[mikro@tik] > :put $testx
VLAN_COMMON
[mikro@tik] > [:parse “global vlancommon;:global testx ($$([:toarray “UP,vlancommon,KIDS”]->1)->"comment")”]
[mikro@tik] > :put $testx
COMMON SERVICES AND DEVICES / OFFICE
[mikro@tik] >

[PackElend]

I got

[mikro@tik] > :global vlancommon {id=100;name="VLAN_COMMON";comment="COMMON SERVICES AND DEVICES / OFFICE"}

but not

[mikro@tik] > :global "vlan_common" {id=100;name="VLAN_COMMON";comment="COMMON SERVICES AND DEVICES / OFFICE"}

regardless the spaces.

The problem is Operations with Arrays - Manual:Scripting - MikroTik Wiki

Warning: Key name in array contains any character other than lowercase character, it should be put in quotes

[rextended]

Why you mix the cards?
I talk about spaces on array elements, not underscores…

[PackElend]

Why you mix the cards?
I talk about spaces on array elements, not underscores....

because I would like to know how to deal with:
:global "vlan_common" {id=100;name="VLAN_COMMON";comment="COMMON SERVICES AND DEVICES / OFFICE"} #variable has to be quoted

[rextended]

ah, on this way, obvious

:global "vlan_common" {id=100;name="VLAN_COMMON";comment="COMMON SERVICES AND DEVICES / OFFICE"}
:put ($"vlan_common")
:put ($"vlan_common"->"name")
:put ([:toarray "UP,vlan_common,KIDS"]->1)
:global testx
[:parse ("global \"vlan_common\";:global testx (\$\"$([:toarray "UP,vlan_common,KIDS"]->1)\"->\"id\")")]
:put $testx
[:parse ("global \"vlan_common\";:global testx (\$\"$([:toarray "UP,vlan_common,KIDS"]->1)\"->\"name\")")]
:put $testx
[:parse ("global \"vlan_common\";:global testx (\$\"$([:toarray "UP,vlan_common,KIDS"]->1)\"->\"comment\")")]
:put $testx

[mikro@tik] > :global “vlan_common” {id=100;name=“VLAN_COMMON”;comment=“COMMON SERVICES AND DEVICES / OFFICE”}
[mikro@tik] > :put ($“vlan_common”)
comment=COMMON SERVICES AND DEVICES / OFFICE;id=100;name=VLAN_COMMON
[mikro@tik] > :put ($“vlan_common”->“name”)
VLAN_COMMON
[mikro@tik] > :put ([:toarray “UP,vlan_common,KIDS”]->1)
vlan_common
[mikro@tik] > :global testx
[mikro@tik] > [:parse (“global "vlan_common";:global testx ($"$([:toarray “UP,vlan_common,KIDS”]->1)" → "id")”)]
[mikro@tik] > :put $testx
100
[mikro@tik] > [:parse (“global "vlan_common";:global testx ($"$([:toarray “UP,vlan_common,KIDS”]->1)" → "name")”)]
[mikro@tik] > :put $testx
VLAN_COMMON
[mikro@tik] > [:parse (“global "vlan_common";:global testx ($"$([:toarray “UP,vlan_common,KIDS”]->1)" → "comment")”)]
[mikro@tik] > :put $testx
COMMON SERVICES AND DEVICES / OFFICE
[mikro@tik] >

[rextended]

xxx