CODEWITHSUNDEEP
ansiblejinja2supercollider
cleary
cleary

Reputation: 113

Is there a way to use the list output from a jinja2 `range` function directly in a template?

I'm using jinja2 to template a supercollider startup file.

I have a variable {{ sc_option_numOutputBusChannels }} from which I need to generate a list.

Specifically, if sc_option_numOutputBusChannels = 8, then I need to create the following list:

[0, 2, 4, 6]

for use in the line:

~dirt.start(57120, [0, 2, 4, 6]);

The function range(0, sc_option_numOutputBusChannels, 2 ) outputs that list exactly as I need it, but I've been unable to find a way to use the output of range directly as a string in my template - eg these don't work:

~dirt.start(57120, {% range(0, sc_option_numOutputBusChannels, 2 ) %} );

~dirt.start(57120, {{ range(0, sc_option_numOutputBusChannels, 2 ) }} );

Is there a way to do this?

Upvotes: 0

Views: 784

Answers (1)

mdaniel
mdaniel

Reputation: 33203

I would guess it is because range by itself is a generator, and thus needs a consumer to indicate to ansible that you're done with the generator pipeline; the most common one I know of is | list

- debug:
    msg: ~dirt.start(57120, {{ range(0, sc_option_numOutputBusChannels, 2 ) | list }} );

Upvotes: 3

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