Ruby on Rails

The home page is controlled by static_pages_controller.rb
However the part of the home page concerning microposts creation and deletion is controlled by the microposts controller.
Below is an extract of microposts_controller.rb

class MicropostsController < ApplicationController
  before_action :logged_in_user, only: [:create, :destroy]
  before_action :correct_user,   only: :destroy

  def create
    @micropost = current_user.microposts.build(micropost_params)
    if @micropost.save
      flash[:success] = "Micropost created!"
      redirect_to root_url
    else
      @feed_items = []
      render 'static_pages/home'
    end
  end

Line 12 is exactly render 'static_pages/home'
app/view/static_pages/home.html.erb is all below:

<% if logged_in? %>
  <% if current_user.gamer? %>
    <%= render 'static_pages/gamers_home' %>
  <% else %>
    <%= render 'static_pages/non_gamers_home' %>
  <% end %>
<% else %>
  <%= render 'static_pages/non_logged_in_home' %>
<% end %>