is it possible to maintain order within with_ loops?

[Guy Matz]

Hi! I have a custom iterator that needs to execute in the order specified in the data structure being passed to it.  It seems, however, that the order is getting lost when it enters the looping code and gets converted to a dict.

Does anyone know if there's a way to maintain the order of the elements of a loop?  I've looked at the lookup_plugins for some guidance but have not found any inspiration

Thanks a lot,

Guy

[Brian Coca]

have you tried |sort?

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Brian Coca
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[Guy Matz]

not sure what you mean . . .  my data comes from json that looks like this:

deploy_env = 

{

    "cmd_build": [

        "gem install rake bundler",

        "bundle install --deployment --without development test --path $BUNDLE_DIR"

    ],

    "cmd_release": [

        "bundle exec rake deploy:release",

        "bundle exec rake db:migrate"

    ]

}

and I loop through the cmd_* hashes with my custom iterator like:

- shell: {{ base_dir }}{{ item.key }}

  with_12fcmds: deploy_env

I need the cmd_build to come before cmd_release as defined in the json, bu it seems that somewhere along the line the json is getting turned into a dict and losing its order . . .

have you tried |sort?

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[Brian Coca]

On Fri, Oct 3, 2014 at 1:39 PM, Guy Matz <gm...@matz.org> wrote:
> with_12fcmds: deploy_env


with_12fcmds: deploy_env|sort

or if its a dictionary:

with_12fcmds: deploy_env|dictsort

[Adam Heath]

Untested, but maybe this:

==
- shell: {{ base_dir }} {{ item }}
with_items: deploy_env.keys() | sort
==

And then be sure to name your keys so they sort the way you need.

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[Guy Matz]

Yeah, I can't use sort because I don't want them sorted, I just want them in the order they came in in the original data.  thanks, though!!

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[Michael DeHaan]

So with_items does loop over *lists* in order.

It looks like you have a hash/dictionary above - these do *not* preserve order (because they seldom do, it is their nature...)

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