download leaderboard reports into a csv rails - ruby-on-rails

Question

I have a reports controller where I have leaderboard. I would like to download the leader board into a csv file
here is the leaderboard code
def leaderboard
if params.has_key?(:start_date) && params.has_key?(:end_date) && params.has_key?(:account)
if params[:unit] == 'all'
#start_date = current_user.created_at
#end_date = Time.now
else
#start_date = Time.at(params[:start_date].to_i/1000)
#end_date = Time.at(params[:end_date].to_i/1000)
end
if params[:account] == 'all'
user_accounts = current_user.accounts.collect{ |a| a.id }
ActsAsTenant.without_tenant do
#conversations = Conversation.where(account_id: user_accounts).updated_between(#start_date,#end_date)
#users = current_user.accounts.collect{|account| account.users}.flatten.uniq.to_a
unassigned = User.new(name: 'Un-assigned')
#users << unassigned
end
else
account = Account.find(params[:account])
ActsAsTenant.with_tenant(account) do
#conversations = account.conversations.updated_between(#start_date,#end_date)
#users = account.users.to_a
unassigned = User.new(name: 'Un-assigned')
#users << unassigned
end
end
else
render json: {error: 'Invalid parameters'}, status: 422
end
end
here is the image of the data I want to be able to download as csv
https://i.stack.imgur.com/VI6lo.png
here is the leaderboard.json.jbuider
json.users #users do |user|
json.(user,:id, :name)
json.closed_count #conversations.where(user: user).closed.count
json.open_count #conversations.where(user: user).open.count
json.replies #conversations.where(user: user).inject(0){|sum, conversation| sum + conversation.messages.where(updated_at: #start_date..#end_date).where(direction: 'OUT').count}
json.resolution_time formatted_duration(array_mean(#conversations.closed.where(user: user).closed.collect{ |c| c.resolution_time }))
json.first_response Conversation.first_response(#conversations.where(user: user))
end
json.total_closed #conversations.closed.count
json.total_open #conversations.open.count
json.total_replies #conversations.inject(0){|sum, conversation| sum + conversation.messages.where(updated_at: #start_date..#end_date).where(direction: 'OUT').count}
json.start_date #start_date.to_i * 1000
json.end_date #end_date.to_i * 1000
How do I go about downloading it into a csv?

Answer 1

From your code snippet I'm not sure what you're trying to "export", but in general it should look like:
csv_lines = []
#some_data.each do |record|
csv_lines << "#{record.field1};#{record.field2};#{record.field3}" #and so on
end
#export csv_lines
txt = csv_lines.join "\n"