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PORails 3.1 app cannot destroy mysql2 object
 

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    <p>I'm new to rails and i've created a web app to manage my warehouses. I've the following problem: when I click on "destroy" button (see attached below), the related object isn't delate from mysql2 database. Anyone can help me?</p> <p>This is controller</p> <p>`</p> <pre><code> class PositionsController &lt; ApplicationController #before_filter :check_count, :only =&gt; [:destroy] # GET /positions # GET /positions.xml def index @positions = Position.find(:all) respond_to do |format| format.html # index.html.erb format.xml { render :xml =&gt; @positions } end end # GET /positions/1 # GET /positions/1.xml def show @position = Position.find(params[:id]) respond_to do |format| format.html # show.html.erb format.xml { render :xml =&gt; @position } end end # GET /positions/new # GET /positions/new.xml def new @position = Position.new respond_to do |format| format.html # new.html.erb format.xml { render :xml =&gt; @position } end end # GET /positions/1/edit def edit @position = Position.find(params[:id]) end # POST /positions # POST /positions.xml def create @position = Position.new(params[:position]) respond_to do |format| if @position.save flash[:notice] = 'Position was successfully created.' format.html { redirect_to(@position) } format.xml { render :xml =&gt; @position, :status =&gt; :created, :location =&gt; @position } else format.html { render :action =&gt; "new" } format.xml { render :xml =&gt; @position.errors, :status =&gt; :unprocessable_entity } end end end # PUT /positions/1 # PUT /positions/1.xml def update @position = Position.find(params[:id]) respond_to do |format| if @position.update_attributes(params[:position]) flash[:notice] = 'Position was successfully updated.' format.html { redirect_to(@position) } format.xml { head :ok } else format.html { render :action =&gt; "edit" } format.xml { render :xml =&gt; @position.errors, :status =&gt; :unprocessable_entity } end end end # DELETE /positions/1 # DELETE /positions/1.xml def destroy @position = Position.find(params[:id]) @position.destroy respond_to do |format| format.html { redirect_to(positions_url) } format.xml { head :ok } end end private def check_count @position_to_destroy = Logicalwarehouse.find(params[:id]) if @position_to_destroy.warehouse.count &gt; 0 flash[:notice] = "Non puoi cancellare una posizione in uso" redirect_to :positions end end end </code></pre> <p>This is model </p> <pre><code>class Position &lt; ActiveRecord::Base has_many :warehouses has_many :locks_on_warehouses, :class_name =&gt; "Warehouse", :foreign_key =&gt; "lock_by_position_id" has_many :users belongs_to :registry </code></pre> <p>end</p> <p>and this is view</p> <pre><code> &lt;h1&gt;Listing positions&lt;/h1&gt; &lt;table&gt; &lt;tr&gt; &lt;th&gt;Name&lt;/th&gt; &lt;/tr&gt; &lt;% for position in @positions %&gt; &lt;tr&gt; &lt;td&gt;&lt;%=h position.name %&gt;&lt;/td&gt; &lt;td&gt;&lt;%= link_to 'Show', position %&gt;&lt;/td&gt; &lt;td&gt;&lt;%= link_to 'Edit', edit_position_path(position) %&gt;&lt;/td&gt; &lt;td&gt;&lt;%= link_to 'Destroy', position, :confirm =&gt; 'Are you sure?', :method =&gt; :delete %&gt;&lt;/td&gt; &lt;/tr&gt; &lt;% end %&gt; &lt;/table&gt; &lt;br /&gt; &lt;%= link_to 'New position', new_position_path %&gt; </code></pre> <p>Other "actions" such as update,edit,show,index works fine but when I destroy an element, it doesn't give me any errors on web server console but the element isn't removed from database.</p>
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