Yes, an array should work:
:roles => defer { [:app,:web] }
However, if you're prompting for the roles, then you'll need to parse
the response string. Capistrano needs a Ruby array back. If it gets a
string back (which is what ui.ask returns) it'll treat it as a single
role name.
Probably the simplest way to parse the input is to assume that whoever
is entering the roles knows to enter Ruby syntax:
:roles => defer { eval(Capistrano::CLI.ui.ask("...")) }
It's not the most secure option, though, so only use it if you can
always trust the operator.
- Jamis
On 1/21/09 10:08 AM, pete wrote:
> Jamis,
>
> Should you be able to specify multiple roles?
>
> For example, when prompted, I'd like to give a list, like: m1,m2, or
> [m1,m2], but none of these seem to work?
>
> Thanks!
>
> On Jan 17, 8:18 am, David Masover <[email protected]> wrote:
>> Nicer than Proc.new, but I'm not sure it's better than, say, proc or lambda.
>> That, and I seem to remember "defer" being used somewhere, for something
>> else, though not in Cap.
>>
>> On Fri, Jan 16, 2009 at 4:58 PM, Jamis Buck <[email protected]> wrote:
>>
>>> Sorry I wasn't clear. The defer() method is an alias for Proc.new. So
>>> you'd just do:
>>> :roles => defer { Capistrano::CLI.ui.ask(...) }
>>> Or, if you prefer:
>>> :roles => Proc.new { Capistrano::CLI.ui.ask(...) }
>>> Some might say that adding defer() was dumb on my part, but I think it
>>> reads much nicer than Proc.new. So, choose your poison. :)
>>> - Jamis
>>> On 1/16/09 3:45 PM, pete wrote:
>>>> Ok, I know it's possible, but I seem to be messing this up...
>>>> Would it be like this?
>>>> task :test_task, :roles => defer { Proc.new { Capistrano::CLI.ui.ask
>>>> ("Please specify ENV: " )} } do
>>>> run "echo hi"
>>>> end
>>>> On Jan 16, 2:38 pm, Jamis Buck <[email protected]> wrote:
>>>>> Pete, yes you can pass a Proc object as the value of the :roles option,
>>>>> and it will get evaluated when the task is considered for execution. The
>>>>> proc should return an array of role names.
>>>>> Capistrano provides a defer() helper to make declaring the procs a bit
>>>>> easier to read:
>>>>> task :generic_task, :roles => defer { compute_role_names_here } do
>>>>> # ...
>>>>> end
>>>>> - Jamis
>>>>> On 1/16/09 1:48 PM, pete wrote:
>>>>>> Hello-
>>>>>> Is it possible to dynamically set roles for a specific task?
>>>>>> For example, I want to create some generic tasks, along with groups of
>>>>>> servers I use, and I wan tto be able to execute these commands on
>>>>>> different groups, without having to duplicate code.
>>>>>> role :group1, m1, m2, m3
>>>>>> role :group2, m4, m5, m6
>>>>>> task :generic_task, :roles => [some passed in variable] do
>>>>>> run "echo hi"
>>>>>> end
>>>>>> Is something like this possible? I have tried a couple options, none
>>>>>> of which worked.
>>>>>> Thanks!
>>
> >
--~--~---------~--~----~------------~-------~--~----~
To unsubscribe from this group, send email to
[email protected]
For more options, visit this group at http://groups.google.com/group/capistrano
-~----------~----~----~----~------~----~------~--~---
