Creating objects/hashes and storing them in an array

Question

I'm trying to create a function that validates data stored in my database. Say I have a table Foo. For each item in Foo i call a function say Bar which validates it by using a set of checks. If the data is not correct, I store the item id along with a description of the reason of failure in a hash. The hash is pushed on to an array.

ErrorList = []
MyHash = Hash.new {|h,k| h[k]=[]}
Foo.each do |f|
    unless f.valid?
        MyHash["foo_id"] = f.id
        MyHash["description"] = "blah blah blah"
        ErrorList.push MyHash
    end
end

At the end of execution, all entries in the array are the same since the hash entries are overwritten. Is there a way I can use this hash to store different id's and description in my array. Otherwise, is there a way to use objects instead to overcome this issue?

I'm using rails version 2.3.5

Answer 1

First MyHash shouldn't be camel case, but you can just do...

myhash = {}
Foo.each do |f|
    unless f.valid?
        myhash[f.id] = "blah blah blah"
    end
end

Assuming all the id's are unique, you only need this hash. This will set the key value pair to: id: blah blah blah