Basic YAML help - collection of objects with attributes

Ruby
1

Hi everyone,

I’m trying to output a YAML file that will list users and some of
their LDAP attributes. For instance (non-YAML):

uid: seanhussey
dn: uid=seanhussey,dc=company,dc=com
anotherattr: 39392:12341

The last attr is formatted like that, with the colon, in case that’s
important.

What I’d like to do is write this out to a file and then be able to
read it back in such that I can iterate over every user and work on
the data. My first pass at this gave me this format:

seanhussey:
dn: uid=seanhussey,dc=company,dc=com
anotherattr: 39392:12341

Etc, for every user. Although I write a hash to the file, when it all
comes out, it’s a bunch of arrays. Trying to access pieces of data by
their name doesn’t work.

users = YAML.load_file(“users.yaml”)

users.each { |user|
puts user[0]
user[1].each { |a|
puts a[0]
puts a[1]
}
}

This gets me:

seanhussey
anotherattr
39392:12341
dn
uid=seanhussey,dc=company,dc=com

How do I get to user[:uid], user[:anotherattr] and user[:dn] ?

Thank you!

Sean

2

Sean H. wrote:

seanhussey:
dn: uid=seanhussey,dc=company,dc=com
anotherattr: 39392:12341

Etc, for every user. Although I write a hash to the file, when it all
comes out, it’s a bunch of arrays. Trying to access pieces of data by
their name doesn’t work.
…
How do I get to user[:uid], user[:anotherattr] and user[:dn] ?

Why not use the YAML library to produce the file as well as consume it?

require ‘yaml’
require ‘win32ole’
domain = WIN32OLE.connect(“WinNT://mydomain”)
users = {}
domain.each do |obj|
if obj.Class == “User”
users[obj.Name] = {
:ads_path => obj.AdsPath,
:guid => obj.Guid
}
end
end
y users

Output:

Guest:
:guid: “{D83F1060-1E71-11CF-B1F3-02608C9E7553}”
:ads_path: WinNT://MSHOME/TELPERION/Guest
Administrator:
:guid: “{D83F1060-1E71-11CF-B1F3-02608C9E7553}”
:ads_path: WinNT://MSHOME/TELPERION/Administrator
Dave:
:guid: “{D83F1060-1E71-11CF-B1F3-02608C9E7553}”
:ads_path: WinNT://MSHOME/TELPERION/Dave
…

Cheers,
Dave

3

Hmm, nice, I wasn’t away of “y”, so that’s cool.

Writing isn’t where I’m having the issue, though. Once you get that
file, how do you read it in such that (using your example) you can get
“Guest” and the appropriate guid and ads_path?

Thanks!

Sean

4

Nevermind, I got it. I just had to shift some perceptions.

YAML.load_file returns an array of arrays, which include a hash for
the sub-attributes of each object.

Got it.

Thanks!

Sean