Code Igniter 2

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  • 1. Nitin Reddy Katkam
  • 2. IntroductionCodeIgniter: Helps builds PHP applications based on the MVC structure Contains system and application folders; application folder contains models, views, and controllers folders
  • 3. Configuration“application/config/database.php” “application/config/autoload.php”Set: $db[default][hostname] = localhost; $db[default][username] = username; $db[default][password] = password; $db[default][database] = dbname;
  • 4. Controllers“application/controllers”Controllers: The default controller is welcome (defined in routes) The default action is index() Extend CI_Controller
  • 5. Controllers (Contd)http://localhost/ci/index.php/product<?phpclass Product extends CI_Controller { public function index() { echo Product index; }}
  • 6. Controllers (Contd) Call echo() to display data Put your data into an array Call $this->load->view() to display a view Load C.I. functions:  Alternative to autoload  $this->load->helper()  $this->load->library()
  • 7. Views“application/views”Views: Data from the array sent from the controller is extracted
  • 8. URL Helper anchor(„controller/action‟, „text‟, array(„att ribute‟=>‟value‟)) redirect(„controller/action‟)
  • 9. Form Helper form_open(„controller/action‟) form_label(„text‟, „for attrib value‟) form_input(„name‟) form_password(„name‟) form_textarea(„name‟) form_submit(„name‟, „text‟) form_dropdown(„name‟, name- value_pair_array, „selected‟) form_close()
  • 10. Models“application/models”Models: Extend CI_Model Generally uses the database library extensively
  • 11. Database Library Generally called from a model class as $this->db->function_name Functions:  get(table_name, limit, offset)  insert(table_name, model)  insert_id()  where(column_name, value)  update(table_name, model)  delete(table_name)  count_all(table_name)
  • 12. For more, reach me at... WWW: nitinkatkam.com Blog: n4express.com Email: k_nitin_r [at] yahoo.co.in