how to delete drop down select value in ROR

How to delete a drop down select value by using link_to option.

My code is:

index.html.erb

 <%= collection_select(:catvalue, :id, @catvalues, :id, :v_name, {}, class: 'drop-down') %>
<%= link_to 'Destroy', {:catvalue => :id},method: :delete, data: { confirm: 'Are you sure?' } %>

and my

controller is:

class CatvaluesController < ApplicationController
    def index
@catvalue = Catvalue.new
        @catvalues = Catvalue.        all
@categories = Category.    all
end

    def destroy
@catvalue_del = Catvalue.find(params[:id])
        @catvalue_del.        destroy
redirect_to catvalues_path
end
end

but its not working

please help me…

Thanks in advance

How to delete a drop down select value by using link_to option.

My code is:

index.html.erb

<%= collection_select(:catvalue, :id, @catvalues, :id, :v_name, {}, class:
'drop-down')%>
<%= link_to 'Destroy', {:catvalue => :id},method: :delete, data: { confirm:
'Are you sure?' } %>

and my

controller is:

class CatvaluesController < ApplicationController
    def index
        @catvalue = Catvalue.new
        @catvalues = Catvalue.all
        @categories = Category.all
    end

    def destroy
        @catvalue_del = Catvalue.find(params[:id])
        @catvalue_del.destroy
        redirect_to catvalues_path
    end
end

but its not working

First you must work out which bit is not working (that is always the
first thing to do when s/w does not work). Look in development.log to
check that parameters are being passed correctly and the correct
action is being called, if that is ok then you can put debug code in
the controller to work out what is going wrong. puts statements in
the controller will appear in the server terminal window.

Colin

I´m not sure that you can use the collection_select with a link, better use a form

try something like:

VIEW

<%= form_tag( :controller =>“Catvalues”, :action => “detroy”, method => “delete” do %>

<%= collection_select(:catvalue, :id, @catvalues, :id, :v_name, {}, class: 'drop-down')%>
<%= submit_tag("Destroy")
<% end %>

´CONTROLLER

        def destroy
@catvalue_del = Catvalue.find(catvalues_params[:id])
@catvalue_del.destroy
redirect_to catvalues_path
end

def catvalues_params

params[:catvalues].permit(:id)

end