Thursday, September 12, 2013
About midway through the Getting Started with Rails guide (http://guides.rubyonrails.org/getting_started.html) I ran into a problem. The problem is in section: "5.7 Showing Posts".
-- The document describes how to setup the "show.html.erb" file as follows:
<p>
<strong>Title:</strong>
<%= @post.title %>
</p>
<p>
<strong>Text:</strong>
<%= @post.text %>
</p>
and the associated controller looks like:
class PostsController < ApplicationController
def new
end
def create
@post = Post.new(post_params)
@post.save
redirect_to @post
#redirect_to action: :show, id: @post.id
#render text: params[:post].inspect
end
private
def post_params
params.require(:post).permit(:title, :text)
end
def show
@post = Post.find(params[:id])
end
end
... show the "show" action is supposed to return the "post" information (i.e. the blog post into the posts table) and I know that it exists in the table but I get an error indicating that:
NoMethodError in Posts#show
Showing /Users/dnassler/dev/rails/workspace/blog/app/views/posts/show.html.erb where line #3 raised:
undefined method `title' for nil:NilClassExtracted source (around line #3):
1 2 3 4 5 6 |
|
Rails.root: /Users/dnassler/dev/rails/workspace/blog
Application Trace | Framework Trace | Full Trace
app/views/posts/show.html.erb:3:in `_app_views_posts_show_html_erb___2211649412857058384_70196496456240'Request
Parameters:
{"id"=>"8"}So it is as if the Post.find(params[:id]) call within the "show" method failed to find the post with id=8? Or maybe there is something wrong with the way that the show.html.erb file is defined?
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