[chef] Re: Re: Re: Array attributes merge

["aL." < >]

Even += works in order to append values he he.

May be that recipes attr definitions just override attr files ones.

Mike: I have checked out that arrays merge works well on defaults attr files + defaults on role. So environment and roles examples on the link, are just examples, i think.

Can a opscode dev, explain what is the exactly behaviour with arrays on attributes? Looks like it depends where you define the attr override works as expected o_O

El 21/10/2013 16:22, "Luke Bradbury" < "> > escribió:

My experience with this issue was similar, however I found that << doesn't play nice with the autovivification.

Consequently I've been using this pattern as a workaround:

node.default['foo'] = node['foo'].to_a.push('bar')

Regards,

Luke

On 21 October 2013 16:04, Michael Glenney < " target="_blank"> > wrote:

I don't have a complete answer but I know that:

1)  The doc you linked to specifically calls out roles and environments. Might be a clue

2)  When writing a provider for a cookbook attributes are mutable. So maybe this will work for you within a recipe: 

node.default['foo'] << 'bar'

Sent from my iPhone

On Oct 21, 2013, at 5:22 AM, "aL." < " target="_blank"> > wrote:

Hi guys!

According to this: http://docs.opscode.com/essentials_node_object_deep_merge.html#addition

Array attributes are merged, i have checked out that this is the behaviour when using default attributes on attribute files and roles.

But when i try to define a default attribute on one recipe:

node.default['foo'] = ['bar']

The one that i have already on defaults.rb attribute file:

node.default['foo'] = ['littlebar']

Is overrided by the one i defined on the recipe, resulting node['foo'] = ['bar']

Defining on  a role:

default_attributes (:foo => ['bar'])

Works as expected, and results on node['foo']  = ['littlebar','bar']

So what exactly node.default['x'] = value do on recipes? Looks like a direct override... O_o

--
Si necesitas una máquina para hacer algo y no la compras al final te darás cuenta de que has pagado lo mismo y no tienes la máquina.--Henry Ford

Alberto