new.html.erb

<h2>New project</h2>

<%= form_for(@project) do |f| %>
  <div class="field">
    <%= f.label :name %><br />
    <%= f.text_field :name %>
  </div>
  <div class="field">
    <%= f.label :technologies_used %><br />
    <%= f.text_area :technologies_used %>
  </div>
  <div class="actions">
    <%= f.submit %>
  </div>
<% end %>

<%= link_to 'Back', projects_path %>

projects_controller.rb

class ProjectsController < ApplicationController

  def index
    @projects = Project.all
  end

  def new
    @project = Project.create
  end

end

routes.rb

Rails.application.routes.draw do
  resources :projects
end

snippet.html

  <h2>New project</h2>

<form accept-charset="UTF-8" action="/projects/2" class="edit_project" id="edit_project_2" method="post"><div style="display:none"><input name="utf8" type="hidden" value="&#x2713;" /><input name="_method" type="hidden" value="patch" /><input name="authenticity_token" type="hidden" value="Z313Tcw5crF9IKH/seZFCVdYB3BkoUPlOn3qtfo62vA=" /></div>
  <div class="field">
    <label for="project_name">Name</label><br />
    <input id="project_name" name="project[name]" type="text" />
  </div>
  <div class="field">
    <label for="project_technologies_used">Technologies used</label><br />
    <textarea id="project_technologies_used" name="project[technologies_used]">
</textarea>
  </div>
  <div class="actions">
    <input name="commit" type="submit" value="Update Project" />
  </div>
</form>
<a href="/projects">Back</a>