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Indent using space instead of tabs for correct rendering. [ci skip]
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‎user_guide_src/source/tutorial/news_section.rst‎

Lines changed: 85 additions & 85 deletions
Original file line numberDiff line numberDiff line change
@@ -26,14 +26,14 @@ and :doc:`Seeds <../dbmgmt/seeds>` to create more useful database setups later.
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::
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CREATE TABLE news (
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id int(11) NOT NULL AUTO_INCREMENT,
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title varchar(128) NOT NULL,
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slug varchar(128) NOT NULL,
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body text NOT NULL,
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PRIMARY KEY (id),
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KEY slug (slug)
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);
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CREATE TABLE news (
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id int(11) NOT NULL AUTO_INCREMENT,
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title varchar(128) NOT NULL,
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slug varchar(128) NOT NULL,
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body text NOT NULL,
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PRIMARY KEY (id),
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KEY slug (slug)
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);
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A note of interest: a "slug", in the context of web publishing, is a
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user- and SEO-friendly short text used in a URL to identify and describe a resource.
@@ -77,14 +77,14 @@ Open up the **app/Models/** directory and create a new file called
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::
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<?php namespace App\Models;
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<?php namespace App\Models;
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use CodeIgniter\Model;
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use CodeIgniter\Model;
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84-
class NewsModel extends Model
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{
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protected $table = 'news';
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}
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class NewsModel extends Model
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{
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protected $table = 'news';
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}
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This code looks similar to the controller code that was used earlier. It
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creates a new model by extending ``CodeIgniter\Model`` and loads the database
@@ -103,17 +103,17 @@ following code to your model.
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::
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public function getNews($slug = false)
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{
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if ($slug === false)
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{
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return $this->findAll();
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}
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public function getNews($slug = false)
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{
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if ($slug === false)
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{
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return $this->findAll();
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}
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return $this->asArray()
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->where(['slug' => $slug])
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->first();
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}
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return $this->asArray()
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->where(['slug' => $slug])
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->first();
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}
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With this code, you can perform two different queries. You can get all
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news records, or get a news item by its `slug <#>`_. You might have
@@ -138,27 +138,27 @@ a new ``News`` controller is defined. Create the new controller at
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::
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<?php namespace App\Controllers;
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<?php namespace App\Controllers;
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use App\Models\NewsModel;
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use CodeIgniter\Controller;
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use App\Models\NewsModel;
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use CodeIgniter\Controller;
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class News extends Controller
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{
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public function index()
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{
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$model = new NewsModel();
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class News extends Controller
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{
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public function index()
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{
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$model = new NewsModel();
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152-
$data['news'] = $model->getNews();
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}
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$data['news'] = $model->getNews();
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}
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public function view($slug = null)
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{
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$model = new NewsModel();
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public function view($slug = null)
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{
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$model = new NewsModel();
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159-
$data['news'] = $model->getNews($slug);
160-
}
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}
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$data['news'] = $model->getNews($slug);
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}
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}
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Looking at the code, you may see some similarity with the files we
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created earlier. First, it extends a core CodeIgniter class, ``Controller``,
@@ -175,19 +175,19 @@ Now the data is retrieved by the controller through our model, but
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nothing is displayed yet. The next thing to do is, passing this data to
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the views. Modify the ``index()`` method to look like this::
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public function index()
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{
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$model = new NewsModel();
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public function index()
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{
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$model = new NewsModel();
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$data = [
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'news' => $model->getNews(),
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'title' => 'News archive',
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];
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$data = [
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'news' => $model->getNews(),
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'title' => 'News archive',
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];
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echo view('templates/header', $data);
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echo view('news/overview', $data);
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echo view('templates/footer', $data);
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}
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echo view('templates/header', $data);
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echo view('news/overview', $data);
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echo view('templates/footer', $data);
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}
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The code above gets all news records from the model and assigns it to a
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variable. The value for the title is also assigned to the ``$data['title']``
@@ -197,28 +197,28 @@ and add the next piece of code.
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::
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200-
<h2><?= esc($title); ?></h2>
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<h2><?= esc($title); ?></h2>
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202-
<?php if (! empty($news) && is_array($news)) : ?>
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<?php if (! empty($news) && is_array($news)) : ?>
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204-
<?php foreach ($news as $news_item): ?>
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<?php foreach ($news as $news_item): ?>
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206-
<h3><?= esc($news_item['title']); ?></h3>
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<h3><?= esc($news_item['title']); ?></h3>
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208-
<div class="main">
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<?= esc($news_item['body']); ?>
210-
</div>
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<p><a href="/news/<?= esc($news_item['slug'], 'url'); ?>">View article</a></p>
208+
<div class="main">
209+
<?= esc($news_item['body']); ?>
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</div>
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<p><a href="/news/<?= esc($news_item['slug'], 'url'); ?>">View article</a></p>
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213-
<?php endforeach; ?>
213+
<?php endforeach; ?>
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215-
<?php else : ?>
215+
<?php else : ?>
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217-
<h3>No News</h3>
217+
<h3>No News</h3>
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219-
<p>Unable to find any news for you.</p>
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<p>Unable to find any news for you.</p>
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221-
<?php endif ?>
221+
<?php endif ?>
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Here, each news item is looped and displayed to the user. You can see we
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wrote our template in PHP mixed with HTML. If you prefer to use a template
@@ -233,23 +233,23 @@ add some code to the controller and create a new view. Go back to the
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::
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236-
public function view($slug = NULL)
237-
{
238-
$model = new NewsModel();
236+
public function view($slug = NULL)
237+
{
238+
$model = new NewsModel();
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240-
$data['news'] = $model->getNews($slug);
240+
$data['news'] = $model->getNews($slug);
241241

242-
if (empty($data['news']))
243-
{
244-
throw new \CodeIgniter\Exceptions\PageNotFoundException('Cannot find the news item: '. $slug);
245-
}
242+
if (empty($data['news']))
243+
{
244+
throw new \CodeIgniter\Exceptions\PageNotFoundException('Cannot find the news item: '. $slug);
245+
}
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247-
$data['title'] = $data['news']['title'];
247+
$data['title'] = $data['news']['title'];
248248

249-
echo view('templates/header', $data);
250-
echo view('news/view', $data);
251-
echo view('templates/footer', $data);
252-
}
249+
echo view('templates/header', $data);
250+
echo view('news/view', $data);
251+
echo view('templates/footer', $data);
252+
}
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254254
Instead of calling the ``getNews()`` method without a parameter, the
255255
``$slug`` variable is passed, so it will return the specific news item.
@@ -258,13 +258,13 @@ The only thing left to do is create the corresponding view at
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259259
::
260260

261-
<h2><?= esc($news['title']); ?></h2>
262-
<?= esc($news['body']); ?>
261+
<h2><?= esc($news['title']); ?></h2>
262+
<?= esc($news['body']); ?>
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.. note:: We are again using using **esc()** to help prevent XSS attacks.
265-
But this time we also passed "url" as a second parameter. That's because
266-
attack patterns are different depending on the context in which the output
267-
is used. You can read more about it :doc:`here </general/common_functions>`.
265+
But this time we also passed "url" as a second parameter. That's because
266+
attack patterns are different depending on the context in which the output
267+
is used. You can read more about it :doc:`here </general/common_functions>`.
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Routing
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-------------------------------------------------------
@@ -278,9 +278,9 @@ with a slug to the ``view()`` method in the ``News`` controller.
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::
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281-
$routes->get('news/(:segment)', 'News::view/$1');
282-
$routes->get('news', 'News::index');
283-
$routes->get('(:any)', 'Pages::view/$1');
281+
$routes->get('news/(:segment)', 'News::view/$1');
282+
$routes->get('news', 'News::index');
283+
$routes->get('(:any)', 'Pages::view/$1');
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Point your browser to your "news" page, i.e. ``localhost:8080/news``,
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you should see a list of the news items, each of which has a link

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