Create array object in a class, ruby

Question

I have created two classes, Blog and Post, try to create an array of Post, in Blog, shows me the following error: "undefined method` push 'for {}: Hash "

How I can do to keep in the Array?

class Blog
    def initialize
        @post = {}
    end
    def addPost (newPost)
#Here I try to add an object blog, post an array of objects
        @post.push(newPost)
    end
end
class Post
    def initialize title, date, text
        @title = title
        @date = date
        @text = text
    end
    def printPost
        puts "#{@title} \n #{@date} \n ****************** \n #{@text}"
    end
end
myBlog = Blog.new
firstPost = Post.new("First Post", "21/12/2014", "This is my first post on my first blog")
secondPost = Post.new("Second Post", "11/10/2015", "This is my seocond post on my first blog")
myBlog.addPost(firstPost)
myBlog.addPost(secondPost)

Thanks

You want to create Array.. But you didn't give a small amount of time to read the Ruby Array API.. That's not good. :( — Arup Rakshit
– Arup Rakshit, Commented Apr 9, 2015 at 15:34
When reporting an exception that was raised, please give the offending line as well as all pertinent information in the exception message (though here it's obvious). Ruby newbies often don't give error messages the attention they deserve. In this case, it pinpoints the problem. You are invoking push on an instance of Hash (i.e, sending the method push to an instance of the class Hash). The error message says that the class Hash doesn't have an instance method push. — Cary Swoveland
– Cary Swoveland, Commented Apr 9, 2015 at 17:17

sawa · Accepted Answer · 2015-04-09 15:32:00Z

2

Initialize the variable as an array, not as a hash.

@post = []

answered Apr 9, 2015 at 15:32

sawa

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2 Comments

Lukas Baliak Over a year ago

I just wrote same thing. ;)

Alejo Ribes Over a year ago

Thanks, I am very new to Ruby.

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