call controller with ajax in rails - ruby-on-rails

Question

In ruby on rails project, when I create a reporter successfully, page is redirect to another action from another controller; and when the page is redirect, the page is reloaded. In this project, I have 2 controller:
reporters_controller.rb:
class ReportersController < ApplicationController
layout "reporter"
def new
#reporter = Reporter.new
#gomrokaddresses = Gomrokaddress.find(:all)
end
def create
#reporter = Reporter.new(reporter_params)
if #reporter.save
#redirect_to new_reporter_path
redirect_to new_problem_path(:id => #reporter.id)
else
#existreporter = Reporter.find_by(params[:rep_user_name])
redirect_to new_problem_path(:id => #existreporter.id)
end
end
problems_controller.rb
def new
#reporter = Reporter.find(params[:id])
#problem = #reporter.problems.build
end
def create
#reporter = Reporter.find(params[:id])
#problem = #reporter.problems.build(problem_params)
if #problem.save
redirect_to new_problem_path(:id => #reporter.id)
else
redirect_to new_problem_path(:id => #reporter.id)
end
end
reporter.rb
class Reporter < ActiveRecord::Base
has_many :problems
end
problem.rb
class Problem < ActiveRecord::Base
belongs_to :reporter
end
I create reporter and problem with form_for in view. When I complete form_for in new.html.erb (for reporter) and submit, create action (that exist in reporter_controller) is called, and then if information are true, page is redirect to /problems/new. Because of this redirect_to, the page is reload; I don't want reload the page, just when I create the reporter, the form_for of reporter replace with the form_for of problem. How can I do this?

Answer 1

Try this in your controller
redirect_to new_problem_path(:id => #reporter.id), format: 'js'
Hope this helps!

Answer 2

A controller action renders the corresponding view template by default. Here, the action "problems#new" automatically renders "views/problems/new.html.erb".
In your code, you've redirected to the URL represented by new_problem_path, and a GET request to that URL is routed to the "problems#new" action. Thus, the action is invoked and its template is loaded.
However, there are ways to override this default behavior if you want to call the action without loading the view template.
Also, redirect_to is different from AJAX. For AJAX, you'd use something like
def create
...
respond_to do |format|
if #reporter.save
format.html { redirect_to ... }
format.js
else
format.html { render action: ... }
format.js
end
end
end
and then add the option :remote => true to form_for in the form that you use to create the new reporter.
But I'm not sure if this would accomplish what you're trying to do. Could you please explain your question further?