Rails: Param problems with delete button

Question

index.html:

  <% @partners.each do |j| %>
            <% if j.link == nil %>
                <div class="column_left"><%= j.name %></div>
            <% else %> 
                <div class="column_left"><%= image_tag("#{j.link}") %></div>
            <% end %>
            <div class="column_right"><%= j.description %></div>
            <%if logged_in? %>
                <%= button_to "-", j, :method => :destroy , data: { confirm: "Sind Sie sich sicher, dass sie den Partner #{j.name} löschen wollen?" } %>
            <% end %>

controller:

    def delete
        Partner.find(partner_params).destroy_all
        redirect_to partner_path, notice: "#Eintrag wurde gelöscht!"
    end

    def addPartner
        @partner = Partner.new(partner_params)
        if !Partner.exists?(:name => partner_params[:name])
            uploaded_io = params[:partner][:logo]
            File.open(Rails.root.join('app', 'assets', 'images', 'partner', uploaded_io.original_filename), 'wb') do |file|
              file.write(uploaded_io.read)
            @partner[:link] = "partner/#{uploaded_io.original_filename}"
            params[:partner].delete :logo
            @partner.save
            redirect_to partner_path, notice: "#{@partner.name} wurde modifiziert!"

            end
        else
          @partner = Partner.where(:name => partner_params[:name])
          if @partner.update_all(partner_params)
            flash[:notice] = "#{@partner.name} wurde geändert!"
          end
        end
      end

    private
       def partner_params
          params.require(:partner).permit(:name, :link, :description)
       end

routes.rb:

  Rails.application.routes.draw do

  get '/login' => 'sessions#new'
  post '/login' => 'sessions#create'
  delete '/logout' => 'sessions#destroy'

  resources :users
  get '/home' => 'main#home'
  get '/impressum' => 'main#impressum'
  post '/impressum' => 'main#updateImpressumById'
  get '/partner' => 'partner#index'
  post '/partner' => 'partner#addPartner'
  delete '/partner' => 'partner#delete'
  get '/jobs' => 'jobs#index'
  post '/jobs' => 'jobs#index'
  get '/kontakt' => 'contacts#new'
  post '/home' => 'main#updateText'
  get '/referenzen' => 'reference#index'
  post '/referenzen' => 'reference#index'

  resources "contacts", only: [:new, :create]

I want to delete an entry from my database by clicking on a button. But there must be a conflict with the "private_params". I always got this problem:

param is missing or the value is empty: partner

I searched for similiar problems, but nothing seems to fit really.

Answer 1

Thanks for the help Gabbar, but now I found the solution on my own. Was a pretty stupid one. I called

method: destroy

but it must be: method: delete otherwise the wrong path is chosen.

Then the routes.rb need to be: delete '/partner' => 'partner#delete'