How to render another models form on another page? - ruby-on-rails-4

Question

Ok so Ive looked around at many answers posted on stackoverflow and many other sites because I know that this is a commonly asked question but I just cant seem to get it and would really appreciate it if someone could point me in the right direction. What Im trying to achieve here is really simple, Im trying to render a new form from another model, Post into my homepage, which is another controller that I created. So basically in my homepage it shows a list of all the recent Post that were created by users. Furthermore I wanted to user to be able to directly add a new Post from the homepage. Right now I have it displaying however clicking on the submit button does absolutely nothing.
Here is the form for POST
<div class="panel panel-primary">
<div class="container">
<div class="panel-heading">
<%= image_tag #post.user.avatar.url(:post_pic), class:"img-thumbnail" %>
<%= #post.user.name %>
<%= 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 |message| %>
<li><%= message %></li>
<% end %>
</ul>
</div>
<% end %>
<div class="field">
<%= f.label :content %><br>
<%= f.text_area :content %>
</div>
<div class="field">
<%= f.file_field :avatar %>
</div>
</div>
</div>
<div class="panel-footer">
<div class="actions">
<%= f.submit %>
</div>
</div>
<% end %>
</div>
Here is my homepage controller
class HomeController < ApplicationController
def index
if user_signed_in?
#posts = Post.all
#post = current_user.posts.build
else
redirect_to new_user_registration_path
end
end
def create
#post = current_user.posts.build(post_params)
#post.save
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(:user_id, :content, :avatar)
end
end
Lastly my homepage index
<div class="row">
<div class="col-md-3"></div>
<div class="col-md-5">
<h1>Home#index</h1>
<p>Find me in app/views/home/index.html.erb</p>
<%= render 'posts/form' %>
<% #posts.each do |post|%>
<div class="panel panel-default">
<div class="panel-heading">
<h3 class="panel-title">
<%= image_tag post.user.avatar.url(:post_pic), class:"img-thumbnail" %>
<%= post.user.name %>
</h3>
</div>
<div class="panel-body">
<%= post.content %></br></br>
<% if post.avatar.file? %>
<%= image_tag post.avatar.url(:test), class:"img-thumbnail" %></br>
<% end %>
</div>
</div>
<% end %>
</div>
</div>
Routes
Rails.application.routes.draw do
resources :posts
get 'users/index'
get 'users/show'
root 'home#index'
devise_for :users

Answer 1

So, you're doing like saving post data using another Controller(Home) instead of Post Controller, right?
Your partial form for post uses:
<%= form_for(#post) do |f| %>
// #post generated url (/posts)
// will look for create method in POST Controller
I suggest to put your saving codes in proper controller(posts), so you will prevent code duplication/redundancy.
TIP:
If you are worrying about redirection from Home view or from Posts view,
you can use params[:controller] for checking where the request came from, by just using if statement.
Finally, you can redirect it to proper page after saving.