```ruby
class FixEmailFrom < ActiveRecord::Migration
  def change
    Post.transaction do
      %w{ obra obrarace }.each do |list_name|
        if File.exists?("tmp/#{list_name}.txt")
          puts "=== #{list_name} ==="

          members = {}
          File.readlines("tmp/#{list_name}.txt").each do |member|
            if member["<"]
              name = member[/([^<]+)/].strip
              email = member.match(/<(.*)>/)[1]
            else
              name = member
              email = member
            end
            members[name] = email
          end

          MailingList.where(name: list_name).first.posts.where("from_email like '%list.obra.org'").each do |post|
            email = members[post.from_name] || Person.where_name_or_number_like(post.from_name).last.try(:email)
            if email.nil?
              puts "!! '#{post.from_name}' not found"
            else
              puts "OK #{post.from_name} to #{email}"
              post.update_column :from_email, email
            end
          end
        end
      end
    end
  end
end
```

Use help@obra.org for posts missing from email
user
```ruby
class FixEmailFrom < ActiveRecord::Migration
  def change
    Post.transaction do
      %w{ obra obrarace }.each do |list_name|
        if File.exists?("tmp/#{list_name}.txt")
          puts "=== #{list_name} ==="

          members = {}
          File.readlines("tmp/#{list_name}.txt").each do |member|
            if member["<"]
              name = member[/([^<]+)/].strip
              email = member.match(/<(.*)>/)[1]
            else
              name = member
              email = member
            end
            members[name] = email
          end

          MailingList.where(name: list_name).first.posts.where("from_email like '%list.obra.org'").each do |post|
            email = members[post.from_name] || Person.where_name_or_number_like(post.from_name).last.try(:email)
            if email.nil?
              puts "!! '#{post.from_name}' not found"
              email = "help@obra.org"
            else
              puts "OK #{post.from_name} to #{email}"
            end
            post.update_column :from_email, email
          end
        end
      end
    end
  end
end
```
assistant