From: "Jesús Gabriel y Galán" <jgabrielygalan@...>
Date: 2009-09-19T06:06:33+09:00
Subject: Re: Array of hashes issue

On Fri, Sep 18, 2009 at 10:13 PM, Brad Dude <bradsacks99@gmail.com> wrote:
> I'm new to ruby and am trying to do a project so I can learn ruby and
> build a tool I need for my job.

Hi, welcome !

> I want to creat an array of hashes and then get the information out.
>
> This is what I have right now:
>
> this is in my getIssuesInFileter class:
>      @issues = @jira.getIssuesFromFilter(@key)
>      @output = Array.new(@issues.length, Hash.new)

First thing: I think this is incorrect, because you start with a
filled array of length @issues.length, all positions pointing to an
empty Hash. Check this:

irb(main):001:0> a = Array.new(10, Hash.new)
=> [{}, {}, {}, {}, {}, {}, {}, {}, {}, {}]
irb(main):002:0> a << {:a => 3}
=> [{}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {:a=>3}]

You see, when I add to the array, I still have 10 positions pointing
to an empty hash. Don't think this is what you want.
I would do just:

@output = [] # or Array.new


>      @issues.each {
>        |fl|
>        @output << {:id => fl.id, :assignee => fl.assignee, :description
> => fl.description, :status => fl.status, :type => fl.type, :updated =>
> fl.updated}
>      }
> return @output
>

When things don't go as expected, you can inspect the variables you
are dealing with, to see what's going on:

> This is where I want to output my results
>        issueArray = @JiraClass.getIssuesInFilter(newFilterVal[0])
>      issueArray.each {
>        |iss|
p iss
>        iss.each {
>          |issSecD|
p issSecD
>          puts issSecD[:description], "\n"
>        }
>      }


Adding those two lines should give you a clue of what's going on: iss
is one of the hashes in the array. issSecD is an array with each
[key,value]. If you are only interested in the description:

issueArray = @JiraClass.getIssuesInFilter(newFilterVal[0])
issueArray.each do |issue|
  puts issue[:description]  #puts already prints a "\n". don't know if
you actually want 2 of them.
end

If you want to iterate all of the keys:

issueArray = @JiraClass.getIssuesInFilter(newFilterVal[0])
issueArray.each do |issue|
  issue.each do |key, value|
    puts "#{key} => #{value}"
end

Hope this helps,

Jesus.