Rails creating more than one row from a single form - ruby-on-rails

Question

I don't know if I am doing this in a wrong way but here is it.
I have 2 models Event and Tasks.
Event has many tasks. and task is a nested resource under event
so I first create a event and ask a user how many tasks it wants to create in it.
Let say I create a Event and a user wants to create 3 tasks in it. I want to do it in 2 steps and not one
After successful creation of event,now I go to /events/1/tasks/new
here I want to have 3 task name fields and when the user submits it, there should be 3 rows created in Task table against the Event 1
How do I achieve this
So here is the task _form.html.erb
<%= form_for [#event, #task] do |f| %>
<% if #task.errors.any? %>
<div id="error_explanation">
<h2><%= pluralize(#task.errors.count, "error") %> prohibited this task from being saved:</h2>
<ul>
<% #task.errors.full_messages.each do |msg| %>
<li><%= msg %></li>
<% end %>
</ul>
</div>
<% end %>
<div class="field">
<%= f.label :content %><br />
<%= f.text_field :content %>
</div>
<div class="actions">
<%= f.submit %>
</div>
<% end %>
Task controller
def new
#event=Event.find(params[:event_id])
#event.task_count do
#choice = #event.tasks.build
end
respond_to do |format|
format.html # new.html.erb
format.json { render json: #task }
end
end
# POST /tasks
# POST /tasks.json
def create
#task = Task.new(params[:task])
respond_to do |format|
if #task.save
format.html { redirect_to #task, notice: 'Task was successfully created.' }
format.json { render json: #task, status: :created, location: #task }
else
format.html { render action: "new" }
format.json { render json: #task.errors, status: :unprocessable_entity }
end
end
end

Answer 1

You can try like this
def new
#event=Event.find(params[:event_id])
3.times {#event.tasks.build}
respond_to do |format|
format.html # new.html.erb
format.json { render json: #task }
end
end