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POHow to pass the right number of arguments into Rails controller
 

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  1. POHow to pass the right number of arguments into Rails controller
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    <p>I am trying to delete an entry in the interview_participant table via the interviews_participants controller. I've got through a number of issues but am getting stuck on an error: </p> <p>ArgumentError in InterviewsParticipantsController#destroy "wrong number of arguments (0 for 1)"</p> <p>The model for interview_participant is... </p> <pre><code>class InterviewParticipant &lt; ActiveRecord::Base belongs_to :interview belongs_to :participant attr_accessible :interview_id, :participant_id </code></pre> <p>and the destroy method in the interview_participants controller is </p> <pre><code> def destroy @interview_participant = InterviewParticipant.where(:interview_id =&gt; params[:interview_id]).where(:participant_id =&gt; params[:participant_id]) @interview_participant.destroy respond_to do |format| format.html { redirect_to interview_participant_url } format.json { head :no_content } end end </code></pre> <p>I would like to be able to remove a participant from an interview by deleting the row in the interview_participant table through this destroy method. In the "show" view for an interview I am isting the participants and would like a button to remove a participant. In the show view for an interview I have...</p> <pre><code>&lt;p&gt; &lt;b&gt;Participants&lt;/b&gt; &lt;% @interview.participants.each do |participant| %&gt; &lt;dd&gt;&lt;%= participant.name %&gt;&lt;/dd&gt; &lt;dd&gt;&lt;%= button_to( "Remove", { :controller =&gt; "interview_participants", :action =&gt; "destroy", :interview_id =&gt; @interview.id, :participant_id =&gt; participant.id }, :method =&gt; :delete, :confirm =&gt; "Are you sure?" ) %&gt;&lt;/dd&gt; &lt;% end %&gt; &lt;/p&gt; </code></pre> <p>I think I am passing the right arguments becasue my URL is <code>/interview_participants/1?interview_id=3&amp;participant_id=2</code> (when I press the button next to for participant 2 and interview 3). But I get the "wrong number of arguments" error in my browser. I've been looking at this for several hours and would really appreciate any help.</p>
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    1. COYour model class should be named in the singular, `InterviewParticipant`.
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    2. COSorry, that's a typo on my part. It is indeed called InterviewParticipant. Thanks for helping.
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    3. COI've done a proper cut and paste into the text above
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