When conditional can be used with variables??

[NEW HOMIE]

Hello there~

Is this possible using when conditional with variables?

For instance, I use two kind of was (Jboss, Weblogic)

I create for checking process id some yml files like under line

check.yml

- shell: ps -ef | grep '{{ nodename }}' | grep XX | awk {'print $2'}

  register: pid

  ignore_errors: True

  when: {{ was }} == jboss

- shell: /usr/ucb/ps -auxwww | grep '{{ nodename }}' | grep XX | awk {'print $2'}

  register: pid

  ignore_errors: True

  when: {{ was }} == weblogic

and then, put this yml file in main.yml

main.yml

- include: check.yml

  tags: check

now I would execute this command

# ansible-playbook playbook -i inventory -t check -e component=somecomponent -e nodename=somenodename -e was=jboss

however It gives me under error message?

{"failed": true, "reason": "ERROR! Syntax Error while loading YAML.

The error appears to have been in 'check.yml': line 5, column 19, but maybe elsewhere in the file depending on the exact syntax problem.

The offending line appears to be: ignore_errors: True\n  when: {{ was }} == jboss^ here

We could be wrong, but this one looks like it might be an issue with missing quotes. 

Always quote template expression brackets when they start a value. For instance: with_items: - {{ foo }} Should be written as: with_items: - \"{{ foo }}\""}

What's problem in my check.yml??

[Brian Coca]

you are writing your conditionals wrong, vars don't need  {{}} and strings need quoting:

  when: was == 'jboss'

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Brian Coca

[Arthur Reyes]

I might be misinformed but I believe that syntax will be deprecated soon and the best way to write that conditional is:

when: '{{ was }}' == 'jboss'

[Brian Coca]

you are misinformed

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Brian Coca

[Arthur Reyes]

Rereading the porting to 2.0 guide, there are a number of instances where bare variables do produce warnings of future deprecation, but when conditions are not mentioned there.

Apologies for any confusion I may have caused.