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PORails code generated with ORM mangomapper throws NoMethodError (undefined method `each' for "4d2aeaea4403baa84a000005":String)
 

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  1. PORails code generated with ORM mangomapper throws NoMethodError (undefined method `each' for "4d2aeaea4403baa84a000005":String)
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    <p>I am absolutely totally news to Rails and to MongoDB. I have been following tutorials from a good book and create my first Rails app with a light Twitter copy. Everything went fine and smooth.</p> <p>But as part of my learning process I wanted to build the same app using MongoDB rather than the default SGBD.</p> <p>I therefore configured mongo and installed the mongo_mapper gem. Everything has been configured properly following this tutorial: <a href="http://www.mongodb.org/display/DOCS/Rails+3+-+Getting+Started" rel="nofollow noreferrer">http://www.mongodb.org/display/DOCS/Rails+3+-+Getting+Started</a>. Then I struggled a little bit to allow Rails generate to work without throwing me the --orm not specified error. In order to get past this I had to add the rails3-generators gem and add it to the Gemfile.</p> <p>Once all this was done, everything worked fine. I was able to successfully launch the Rails server.</p> <p>I added a User controller thanks to the generate. The page works fine and even lists the users I have previously added:</p> <p><img src="https://i.stack.imgur.com/zXlFM.jpg" alt="alt text"></p> <p>However all the other actions, showing, editing, deleting, etc. are not working (creating works, but then it goes to show and the errors comes):</p> <p><img src="https://i.stack.imgur.com/n6GbK.jpg" alt="alt text"></p> <p>It's virtually the same error for all different actions.</p> <p>The one difference I can notice right off the bat is that with the non MongoDB db, the id's of the user was starting at 1, etc. but here with MongoDB it looks like a randomly generated id that is much more complex and that is not of type int: 4d2ae91d4403baa84a000002</p> <p>I am thinking that this may be creating the issues, since all action are using the id as a parameter... but I have no idea how to fix this. I have looked at the ruby generated code and it looks alright to me (extremely similar to the code generate for the default db).</p> <p>Any help would be greatly appreciated ! I don't know how to go forward with my project without solving a simple generate code with mongodb.</p> <p>Thanks,</p> <p>Alex</p> <p>ps: please that I did not write any of this code at all. everything has been generated, which is kinda why I expected to work from the get go...</p> <p>as asked here is the code for users_controllers:</p> <pre><code>class UsersController &lt; ApplicationController # GET /users # GET /users.xml def index @users = User.all respond_to do |format| format.html # index.html.erb format.xml { render :xml =&gt; @users } end end # GET /users/1 # GET /users/1.xml def show @user = User.first(params[:id]) respond_to do |format| format.html # show.html.erb format.xml { render :xml =&gt; @user } end end # GET /users/new # GET /users/new.xml def new @user = User.new respond_to do |format| format.html # new.html.erb format.xml { render :xml =&gt; @user } end end # GET /users/1/edit def edit @user = User.first(params[:id]) end # POST /users # POST /users.xml def create @user = User.new(params[:user]) respond_to do |format| if @user.save format.html { redirect_to(@user, :notice =&gt; 'User was successfully created.') } format.xml { render :xml =&gt; @user, :status =&gt; :created, :location =&gt; @user } else format.html { render :action =&gt; "new" } format.xml { render :xml =&gt; @user.errors, :status =&gt; :unprocessable_entity } end end end # PUT /users/1 # PUT /users/1.xml def update @user = User.first(params[:id]) respond_to do |format| if @user.update(params[:user]) format.html { redirect_to(@user, :notice =&gt; 'User was successfully updated.') } format.xml { head :ok } else format.html { render :action =&gt; "edit" } format.xml { render :xml =&gt; @user.errors, :status =&gt; :unprocessable_entity } end end end # DELETE /users/1 # DELETE /users/1.xml def destroy @user = User.first(params[:id]) @user.destroy respond_to do |format| format.html { redirect_to(users_url) } format.xml { head :ok } end end end </code></pre>
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    1. COShow us line 16 of `users_controller.rb` please.
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    2. COjuste edited the post.
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