edit.html.haml

%h2 Edit your profile

= form_for @user, :html => { :class => "form-horizontal" } do |f|
  .control-group
    = f.label :first_name, :class => "control-label"
    .controls
      = f.text_field :first_name

  .control-group
    = f.label :last_name, :class => "control-label"
    .controls
      = f.text_field :last_name
      %span.help-block We like to use real names on Artburst, so people know who's who.

  .control-group
    = f.label :username, :class => "control-label"
    .controls
      = f.text_field :username
      %span.help-block Your Artburst profile will be here: http://artburst.com/<strong id="username">USERNAME</strong>

  .control-group
    = f.label :email, :class => "control-label"
    .controls
      .input-prepend
        %span.add-on
          %i.icon.icon-envelope
        = f.text_field :email

  .control-group
    = f.label :zip, "Zip code", :class => "control-label"
    .controls
      .input-prepend
        %span.add-on
          %i.icon.icon-map-marker 
        = f.text_field :zip, :class => "input-mini"
        %span.help-block So we can help you find nearby events and artists.

  .control-group
    .controls
      = f.submit "Save Changes", :class => "btn btn-primary"

edit_user_profile.rb

require 'spec_helper'

feature 'Edit user profile' do
  before do
    @user = create(:user)
    login(@user)
    visit "/#{@user.username}/edit"
  end

  scenario 'Successful edit' do
    page.should have_content("Edit your profile")
    fill_in "First name", :with => "New"
    fill_in "Last name", :with => "Name"
    fill_in "Username", :with => "newusername"
    fill_in "Email", :with => "[email protected]"
    fill_in "Zip code", :with => "92104"
    click_button "Save Changes"
    page.should have_content("Your account has been updated.")
  end
end

users_controller.rb

class UsersController < ApplicationController
  def show
    @user = User.find_by_username!(params[:id].downcase)
  end

  def new
  end

  def edit
    @user = User.find_by_username!(params[:id].downcase)
  end

  def update
    @user = User.find(params[:id])
    if @user.update_attributes(params[:user])
      flash[:success] = "Your account has been updated."
      redirect_to edit_user_path(@user.username)
    else
      render 'edit'
    end
  end
end