Rails: DropDown Selection to Controller Action - ruby-on-rails

Question

Good Day, i have this form view/startseites/index.html.erb and i specified a methode in my people_controller, she doesnt go. I prepared some ghost code for understanding. I want to give the entries from dropdowns with the button_to tag to the controller action checkValid. There i want to validate the entries against the database. I have to read and write from and to the table. I hope its clearly enough.
class PeopleController < ApplicationController
def checkValid
#trainerName = params[:trainer_name]
#sportlerName = params[:sportler_name]
#trainerPID = params[:trainer_pid]
#sportlerPID = params[:sportler_pid]
#checks if sportlerID is null
#person = Person.find(params[:sportler_pid])
id = Person.sportler_id
if id = nil then
Person.sportler_id = params[:trainerPID]
else
puts "Sportler can have only one Trainer!"
end
end
...
view/startseites/index.html.erb: this code doesnt go
this should send the drop down selection to the controller action checkValid(). how can i use parameters?
<%=button_to( "Zuordnung erstellen", :action => "checkValid", :controller =>"people" %>**
<table>
<tr>
<td colspan="3">
Jeder Sportler kann ein Trainer haben. </br>
</td>
</tr>
<tr>
<td>Trainer</td>
<td>
<%= collection_select(:trainer, :trainer_id, Trainer.all, :id, :name) %>
</td>
<td>
<%= link_to 'Neuer Trainer', new_person_path(:type => "Trainer") %>
</td>
<tr>
<tr>
<td>Sportler</td>
<td>
<%= collection_select(:sportler, :sportler_id, Sportler.all, :id, :name) %>
</td>
<td>
<%= link_to 'Neuer Sportler', new_person_path(:type => "Sportler") %>
</td>
<tr>
<tr>
<td></td>
<td></td>
<td>
**<%=button_to( "Zuordnung erstellen", :action => "checkValid", :controller => "people") %>**
</td>
<tr>
</table>
i added this line to my routes
match '/people/checkValid', :controller => 'people', :action => 'checkValid'
but: No route matches {:controller=>"people/checkValid", :method=>:checkValid}
no i think it goes but
Template is missing
Missing template people/checkValid, application/checkValid with {:locale=>[:en], :formats=>[:html], :handlers=>[:erb, :builder, :coffee]}. Searched in: * "C:/Users/jord/testmood/app/views"

Answer 1

The Missing template error refers to a missing view. You should have check_valid.html.erb view file in app/views/people/ directory.
Also, run rake routes on the command line anywhere within your app's directory. You will receive a list routes that are generated by your routes.rb file. You can double-check there if people#checkValid exists.
Btw, you might want to change checkValid to check_valid so you follow the naming convention for actions in Rails.