Re: [Rails] check box tag binding between controller and the view

On 21 October 2012 05:42, Muhammad Salman <lists@ruby-forum.com> wrote:
> I am new to RoR. The problem i am facing is that that i have a few check
> box and initially when i run my app for the first time i want them all
> to be selected while for every next time i want it to have the last
> checked boxes checked. To do this, In my controller i have
>
> @all_ratings = Movie.all_ratings
> @selected_ratings = []
> if !params[:ratings].nil?
> params[:ratings].each_key do |key|
> @selected_ratings << key
> end
> elsif
> @selected_ratings = @all_ratings
> end
>
> While my model looks something like
>
> class Movie < ActiveRecord::Base
> def self.all_ratings
> @all_rating = ['G', 'PG', 'PG-13', 'R']
> end
> end
>
> and the form looks something like this
>
> Include:
> - @all_ratings.each do |rating|
> = rating
> = check_box_tag "ratings[#{rating}]", 1,
> rating==@selected_ratings.each{|s_rating|}
> = submit_tag 'Refresh', :id => "ratings_submit"
>
> Now what i am trying to do in the controller is that that i wanted to
> see if the param is empty if it is then i want to check all the values
> so i create an instance variable @selected_ratinngs and pass all values
> of rating into. If i have some values selected from the the checkbox
> then i save those values in the selected_ratings.
>
> In the view I am planning to use the selected_rating and in the
> check_box_tag want to compare the selected_rating with rating to see if
> its already there then the checked parameter is true otherwise.
>
> After such a lenghty description, i want to add that this does not work
> as planned any ideas.

First have a look at the Rails Guide on Debugging. That will give you
ideas on how to debug your code in order to work out what is going
wrong. Then you should be able to see which bit of your code is not
working. Come back once you have narrowed it down to a particular bit
of code if it is still not working.

Colin

--
You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group.
To post to this group, send email to rubyonrails-talk@googlegroups.com.
To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe@googlegroups.com.
For more options, visit https://groups.google.com/groups/opt_out.