Rails error-undefined method `id' for nil:NilClass - ruby-on-rails

Question

I'm trying to get the data from the phrases_term model to the view, but I'm getting an error.
Phrases_term model:
Phrases_term(id, term_id, phrase_id)
phrases_terms_controller.rb
class PhrasesTermsController < ApplicationController
before_action :authenticate_user!
before_action :set_term
def new
#phrases_term = PhrasesTerm.new
end
def create
#phrases_term = #term.phrases_terms.new(phrases_term_params)
if #phrases_term.save
redirect_to term_phrases_term_path(#term, #phrases_term), notice: "Phrases_Term was successfully created"
else
render "new"
end
end
private
def phrases_term_params
params.require(:phrases_term).permit(:term_id, :phrase_id)
end
def set_term
#term = Term.find(params[:term_id])
end
end
Phrases_term show view, show.html.erb:
<div class="container">
<table class="table">
<thead>
<tr>
<th>ID</th>
<th>Phrases_ID</th>
<th>Term_ID</th>
</tr>
</thead>
<tbody>
<tr>
<td><%= #phrases_term.id %></td>
<td><%= #phrases_term.term_id %></td>
<td><%= #phrases_term.phrase_id %></td>
</table>
<%= link_to 'Back', terms_path %> |
<%= link_to 'Edit', edit_term_path %>
</div>
The error I'm getting:
Error: Eundefined method `id' for nil:NilClass

Answer 1

You're getting an undefined method 'id' for nil:NilClass error because your show.html.erb view doesn't know what #phrases_term is. Hence calling the id method on a variable that doesn't exist yet throws an error. You need to define the variable you're using in the right controller under the right action. So adding:
def show
#phrases_term = PhrasesTerm.find(params[:id])
end
in you phrases_terms_controller.rb should solve the error.