diff options
Diffstat (limited to 'user_guide_src')
| -rw-r--r-- | user_guide_src/source/tutorial/static_pages.rst | 105 |
1 files changed, 52 insertions, 53 deletions
diff --git a/user_guide_src/source/tutorial/static_pages.rst b/user_guide_src/source/tutorial/static_pages.rst index 8ba0486c1..53f286473 100644 --- a/user_guide_src/source/tutorial/static_pages.rst +++ b/user_guide_src/source/tutorial/static_pages.rst @@ -11,12 +11,16 @@ static pages. A controller is simply a class that helps delegate work. It is the glue of your web application. For example, when a call is made to: -``http://example.com/news/latest/10`` We might imagine that there is a -controller named "news". The method being called on news would be -"latest". The news method's job could be to grab 10 news items, and -render them on the page. Very often in MVC, you'll see URL patterns that -match: -``http://example.com/[controller-class]/[controller-method]/[arguments]`` + + http://example.com/news/latest/10 + +We might imagine that there is a controller named "news". The method +being called on news would be "latest". The news method's job could be to +grab 10 news items, and render them on the page. Very often in MVC, +you'll see URL patterns that match: + + http://example.com/[controller-class]/[controller-method]/[arguments] + As URL schemes become more complex, this may change. But for now, this is all we will need to know. @@ -25,15 +29,13 @@ code. :: - <?php - class Pages extends CI_Controller { + <?php + class Pages extends CI_Controller { - public function view($page = 'home') - { - - } - - } + public function view($page = 'home') + { + } + } You have created a class named "pages", with a view method that accepts one argument named $page. The pages class is extending the @@ -56,13 +58,13 @@ following code. :: - <html> - <head> - <title>CodeIgniter Tutorial</title> - </head> - <body> + <html> + <head> + <title>CodeIgniter Tutorial</title> + </head> + <body> - <h1>CodeIgniter Tutorial</h1> + <h1>CodeIgniter Tutorial</h1> The header contains the basic HTML code that you'll want to display before loading the main view, together with a heading. It will also @@ -72,16 +74,16 @@ includes the following code: :: - <em>© 2014</em> - </body> - </html> + <em>© 2014</em> + </body> + </html> Adding logic to the controller ------------------------------ -Earlier you set up a controller with a view() method. The method accepts -one parameter, which is the name of the page to be loaded. The static -page templates will be located in the application/views/pages/ +Earlier you set up a controller with a ``view()`` method. The method +accepts one parameter, which is the name of the page to be loaded. The +static page templates will be located in the application/views/pages/ directory. In that directory, create two files named home.php and about.php. Within @@ -93,43 +95,40 @@ page actually exists: :: - <?php - public function view($page = 'home') - { - - if ( ! file_exists(APPPATH.'/views/pages/'.$page.'.php')) - { - // Whoops, we don't have a page for that! - show_404(); - } - - $data['title'] = ucfirst($page); // Capitalize the first letter - - $this->load->view('templates/header', $data); - $this->load->view('pages/'.$page, $data); - $this->load->view('templates/footer', $data); - - } + public function view($page = 'home') + { + if ( ! file_exists(APPPATH.'/views/pages/'.$page.'.php')) + { + // Whoops, we don't have a page for that! + show_404(); + } + + $data['title'] = ucfirst($page); // Capitalize the first letter + + $this->load->view('templates/header', $data); + $this->load->view('pages/'.$page, $data); + $this->load->view('templates/footer', $data); + } Now, when the page does exist, it is loaded, including the header and footer, and displayed to the user. If the page doesn't exist, a "404 Page not found" error is shown. The first line in this method checks whether the page actually exists. -PHP's native file\_exists() function is used to check whether the file -is where it's expected to be. show\_404() is a built-in CodeIgniter +PHP's native ``file_exists()`` function is used to check whether the file +is where it's expected to be. ``show_404()`` is a built-in CodeIgniter function that renders the default error page. -In the header template, the $title variable was used to customize the +In the header template, the ``$title`` variable was used to customize the page title. The value of title is defined in this method, but instead of assigning the value to a variable, it is assigned to the title element in the $data array. The last thing that has to be done is loading the views in the order -they should be displayed. The second parameter in the view() method is -used to pass values to the view. Each value in the $data array is +they should be displayed. The second parameter in the ``view()`` method is +used to pass values to the view. Each value in the ``$data`` array is assigned to a variable with the name of its key. So the value of -$data['title'] in the controller is equivalent to $title in the view. +``$data['title']`` in the controller is equivalent to $title in the view. Routing ------- @@ -149,8 +148,8 @@ all other code that sets any element in the $route array. :: - $route['default_controller'] = 'pages/view'; - $route['(:any)'] = 'pages/view/$1'; + $route['default_controller'] = 'pages/view'; + $route['(:any)'] = 'pages/view/$1'; CodeIgniter reads its routing rules from top to bottom and routes the request to the first matching rule. Each rule is a regular expression @@ -163,8 +162,8 @@ More information about routing can be found in the URI Routing `documentation <../general/routing.html>`_. Here, the second rule in the $routes array matches **any** request using -the wildcard string (:any). and passes the parameter to the view() +the wildcard string (:any). and passes the parameter to the ``view()`` method of the pages class. -Now visit index.php/about. Did it get routed correctly to the view() +Now visit index.php/about. Did it get routed correctly to the ``view()`` method in the pages controller? Awesome! |