No Method Error in View & Rails 4 Console with PSQL - ruby-on-rails

Question

Can't figure out what's going on as I try to add dirt simple blog capability to my website. Starter app I'm using is pre-configured for HAML and I'm an even bigger HAML n00b than Rails n00b, so I'm seriously struggling.
When I add this to my pages/home.html.haml:
%h1= I18n.t('brand.name')
%p
= I18n.t 'brand.name'
- #posts. each do |post|
= render 'posts/post', post: post
I get:
undefined method `each' for nil:NilClass
I can't figure it out... I thought Ruby had an "each" method built it? Why isn't it passing any class in?
Here's the _post.html.haml partial it's trying to render:
%p
%h2
= link_to post.title, post
%p
- if post.kind == 'image'
= image_tag post.content, style: "width: 100%"
- else
= simple_format post.content
%p.text-muted
%small
Posted on #{post.created_at.to_formatted_s(:long)}
And the controller:
class PostsController < ApplicationController
before_action :set_post, only: [:show, :edit, :update, :destroy]
def index
#posts = Post.all
end
def show
#post = Post.find(params[:id])
end
def new
#post = Post.new
end
def edit
end
def create
#post = Post.new(post_params)
respond_to do |format|
if #post.save
format.html { redirect_to #post, notice: 'Post was successfully created.' }
else
format.html { render action: 'new' }
end
end
end
def update
respond_to do |format|
if #post.update(post_params)
format.html { redirect_to #post, notice: 'Post was successfully updated.' }
else
format.html { render action: 'edit' }
end
end
end
def destroy
#post.destroy
respond_to do |format|
format.html { redirect_to posts_url }
end
end
private
# Use callbacks to share common setup or constraints between actions.
def set_post
#post = Post.find(params[:id])
end
# Never trust parameters from the scary internet, only allow the white list through.
def post_params
params.require(:post).permit(:title, :kind, :content)
end
end
And the model is empty, just:
class Post < ActiveRecord::Base
end
I copy/pasted most of this code from a working blog example I built in a tutorial and it works fine in that app.
I suspect it has something to do with PSQL (in this app) versus SQLite (in the example app). In rails console, trying it gives the same error:
[3] pry(main)> post = post.first
NoMethodError: undefined method `first' for nil:NilClass
[4] pry(main)> posts = post.each
NoMethodError: undefined method `each' for nil:NilClass
[5] pry(main)> posts = Post.each
NoMethodError: undefined method `each' for Post (call 'Post.connection' to establish a connection):Class
from /Users/troot/.rvm/gems/ruby-2.1.3/gems/activerecord-4.1.6/lib/active_record/dynamic_matchers.rb:26:in `method_missing'
I don't understand why the methods that I think should be working are not working here. Thanks so much for any help you can give.

Answer 1

In this line:
- #posts. each do |post|
there is a space between #posts and each. There should be no space in between as each is a method and you are explicitly calling it using the . operator on #posts object.
Then in console you are doing:
post = post.first
It should be:
post = Post.first
The class name should always be in capital.
And in the console if you need to run each then you need to do Post.all.each you can use each directly on class.
Try correcting this and then check. Hope this helps.