Variable substitution not working

[joey.bradshaw]

I’ve defined a variable called RedisKeyPrefix with a value of #{Octopus.Release.Created | Format yyyy-MM-dd-HH-mm-ss} in my project.

I’ve turned on Substitute Variables in Files as shown below.

My config file looks like this prior to deployment:
<appSettings>
<add key=“RedisKeyPrefix” value="" />
…
</appSettings>

The resulting config file looks like this after deployment:
<appSettings>
<add key=“RedisKeyPrefix” value="#{Octopus.Release.Created | Format yyyy-MM-dd-HH-mm-ss}" />
…
</appSettings>

How do I get Octopus to take the release’s creation date, format it and put it into the config setting?

[jeremy.miller]

Hey Joey,

First of all, welcome to the Octopus boards!

Thanks for reaching out.

With variable substitution you need to put #{variablename} in the place where you want the variable to be.

I did a repro with the following settings and it worked for me. Take a look and see if you can adapt it on your side.

The variable name is the different, but the value is the same, I believe.

BEFORE:

AFTER:

If changing the variable syntax in your config doesnt work, can you please tell me what version of Octopus Server and Tentacle you’re running? I did the repro on 2020.2.16 and 5.0.13 respectively.

Thanks,
Jeremy

[joey.bradshaw]

Thanks, I’ll give this a shot and see if I can get it to work in my setup.

[jeremy.miller]

Hey Joey,

You’re very welcome. Please let me know if it works or if we need to dig in a bit further.

Thanks,
Jeremy

[joey.bradshaw]

I couldn’t get this to work. I have Octo Server: 2019.6.3 & Tentacle: 5.0.2

Does this feature require a newer versions?

[jeremy.miller]

Hi Joey,

It’s very possible something was fixed between your version and the one I reproduced it on. Is it the same results as before when you change it to #{RedisKeyPrefix}?

Thanks,
Jeremy