Ruby on Rails modify references - ruby-on-rails

Question

So my initial question was Association Ruby on Rails. However when referring to a post the issue that i am having is that its blank. Don't see anything. After researching I believe is because when i created my test post I didn't define a customer related to it.
class CustomersController < ApplicationController
before_filter :signed_in_customer, only: [:edit, :update]
before_filter :correct_customer, only: [:edit, :update]
def index
#customers = Customer.all
end
def show
#customer = Customer.find(params[:id])
**#posts = #customer.posts**
end
Here the form that allow me to create a post for the moment.
<%= form_for(#post) do |f| %>
<% if #post.errors.any? %>
<div id="error_explanation">
<h2><%= pluralize(#post.errors.count, "error") %> prohibited this post from being saved:</h2>
<ul>
<% #post.errors.full_messages.each do |msg| %>
<li><%= msg %></li>
<% end %>
</ul>
</div>
<% end %>
<div class="field">
<%= f.label :title %><br />
<%= f.text_field :title %>
</div>
<div class="field">
<%= f.label :description %><br />
<%= f.text_field :description %>
</div>
<div class="field">
<%= f.label :frienship_group_id %><br />
<%= f.text_field :frienship_group_id %>
</div>
<div class="field">
<%= f.label :post_size_id %><br />
<%= f.text_field :post_size_id %>
</div>
<div class="actions">
<%= f.submit %>
</div>
<% end %>
Which is what i am using when creating a new form. How i am suppose to allow customization to update the field that this is related to the current user in the customer_id field?
Here the model
class Post < ActiveRecord::Base
belongs_to :customer
validates :title, presence: true
validates :description, presence: true
validates :customer_id, presence: true
validates :frienship_group_id, presence: true
validates :Post_size_id, presence: true
Update:
Here my new.html.erb for post
<h1>New post</h1>
<%= render 'form' %>
<%= link_to 'Back', posts_path %>
Here the controller
class PostsController < ApplicationController
# GET /posts
# GET /posts.json
def index
#posts = Post.all
respond_to do |format|
format.html # index.html.erb
format.json { render json: #posts }
end
end
# GET /posts/1
# GET /posts/1.json
def show
#post = Post.find(params[:id])
respond_to do |format|
format.html # show.html.erb
format.json { render json: #post }
end
end
# GET /posts/new
# GET /posts/new.json
def new
#post = Post.new
respond_to do |format|
format.html # new.html.erb
format.json { render json: #post }
end
end
# GET /posts/1/edit
def edit
#post = Post.find(params[:id])
end
# POST /posts
# POST /posts.json
def create
#post = Post.new(params[:post])
respond_to do |format|
if #post.save
format.html { redirect_to #post, notice: 'Post was successfully created.' }
format.json { render json: #post, status: :created, location: #post }
else
format.html { render action: "new" }
format.json { render json: #post.errors, status: :unprocessable_entity }
end
end
end
# PUT /posts/1
# PUT /posts/1.json
def update
#post = Post.find(params[:id])
respond_to do |format|
if #post.update_attributes(params[:post])
format.html { redirect_to #post, notice: 'Post was successfully updated.' }
format.json { head :no_content }
else
format.html { render action: "edit" }
format.json { render json: #post.errors, status: :unprocessable_entity }
end
end
end
# DELETE /posts/1
# DELETE /posts/1.json
def destroy
#post = Post.find(params[:id])
#post.destroy
respond_to do |format|
format.html { redirect_to posts_url }
format.json { head :no_content }
end
end
end

Answer 1

I'm fairly new to Rails, but I think this is how you do it. I'm assuming that your currently logged in user is current_user.
def create
#post = current_user.posts.build(params[:post])
respond_to do |format|
if #post.save
format.html { redirect_to #post, notice: 'Post was successfully created.' }
format.json { render json: #post, status: :created, location: #post }
else
format.html { render action: "new" }
format.json { render json: #post.errors, status: :unprocessable_entity }
end
end
end