Table - Code Metrics - Inspection of "add default query modifiers" - oscarotero/simple-crud - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( 6dac49...fd563b )

by Oscar

created 2016-05-25 16:47 UTC

Table B

↳ Parent: Project

Complexity

Total Complexity

Size/Duplication

Total Lines	372
Duplicated Lines	1.61 %

Coupling/Cohesion

Components	4
Dependencies	6

Importance

Changes	9
Bugs	1	Features	3

Metric	Value
wmc	44
c	9
b	1
f	3
lcom	4
cbo	6
dl	6
loc	372
rs	8.3396

22 Methods

Rating	Name	Duplication	Size	Complexity
A	cache()	0	4	1
A	clearCache()	0	4	1
A	__construct()	0	16	2
A	__debugInfo()	0	7	1
A	init()	0	3	1
A	addQueryModifier()	0	8	2
A	__call()	0	12	3
A	offsetExists()	0	11	2
A	offsetGet()	0	11	2
B	offsetSet()	0	35	5
A	offsetUnset()	0	9	1
A	getDatabase()	0	4	1
A	getScheme()	0	4	1
A	getAttribute()	0	4	1
A	setRow()	0	4	1
A	setCollection()	0	4	1
B	create()	3	14	5
A	createCollection()	0	10	2
A	dataToDatabase()	0	4	1
A	dataFromDatabase()	0	4	1
B	createFromDatabase()	3	21	5
A	prepareDataToDatabase()	0	17	4

How to fix Duplicated Code Complexity

Duplicated Code

Duplicate code is one of the most pungent code smells. A rule that is often used is to re-structure code once it is duplicated in three or more places.

Common duplication problems, and corresponding solutions are:

If you have the same expression in different places: Extract expression to a method
If you have the same method in different sub-classes: Extract method, and pull up field to the parent class
If you have the same code in unrelated classes: Consider extracting the code to a new class, and injecting that class

Complex Class

Tip: Before tackling complexity, make sure that you eliminate any duplication first. This often can reduce the size of classes significantly.

Complex classes like Table often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes. You can also have a look at the cohesion graph to spot any un-connected, or weakly-connected components.

Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.

While breaking up the class, it is a good idea to analyze how other classes use Table, and based on these observations, apply Extract Interface, too.

<?php

namespace SimpleCrud;

use ArrayAccess;

/**
 * Manages a database table.
 */
class Table implements ArrayAccess
{
    private $db;
    private $row;
    private $collection;
    private $cache = [];

    public $name;
    public $fields = [];
    public $queriesModifiers = [];

    /**
     * Constructor.
     *
     * @param SimpleCrud $db
     * @param string     $name
     */
    final public function __construct(SimpleCrud $db, $name)
    {
        $this->db = $db;
        $this->name = $name;

        $this->setRow(new Row($this));
        $this->setCollection(new RowCollection($this));

        $fieldFactory = $db->getFieldFactory();

        foreach (array_keys($this->getScheme()['fields']) as $name) {
            $this->fields[$name] = $fieldFactory->get($this, $name);
        }

        $this->init();
    }

    /**
     * Debug info.
     * 
     * @return array
     */
    public function __debugInfo()
    {
        return [
            'name' => $this->name,
            'fields' => $this->fields,
        ];
    }

    /**
     * Callback used to init the table.
     */
    protected function init()
    {
    }

    /**
     * Store a row in the cache.
     * 
     * @param Row $row
     */
    public function cache(Row $row)
    {
        $this->cache[$row->id] = $row;
    }

    /**
     * Clear the current cache.
     */
    public function clearCache()
    {
        $this->cache = [];
    }

    /**
     * Register a new query modifier
     * 
     * @param string   $name
     * @param callable $modifier
     */
    public function addQueryModifier($name, callable $modifier)
    {
        if (!isset($this->queriesModifiers[$name])) {
            $this->queriesModifiers[$name] = [];
        }

        $this->queriesModifiers[$name][] = $modifier;
    }

    /**
     * Magic method to create queries related with this table.
     *
     * @param string $name
     * @param array  $arguments
     *
     * @throws SimpleCrudException
     *
     * @return Queries\Query|null
     */
    public function __call($name, $arguments)
    {
        $query = $this->getDatabase()->getQueryFactory()->get($this, $name);

        if (isset($this->queriesModifiers[$name])) {
            foreach ($this->queriesModifiers[$name] as $modifier) {
                $modifier($query);
            }
        }

        return $query;
    }

    /**
     * Check if a row with a specific id exists.
     *
     * @see ArrayAccess
     *
     * @return bool
     */
    public function offsetExists($offset)
    {
        if (array_key_exists($offset, $this->cache)) {
            return !empty($this->cache[$offset]);
        }

        return $this->count()
class ParentClass {
    private $data = array();

    public function __call($method, array $args) {
        if (0 === strpos($method, 'get')) {
            return $this->data[strtolower(substr($method, 3))];
        }

        throw new \LogicException(sprintf('Unsupported method: %s', $method));
    }
}

/**
 * If this class knows which fields exist, you can specify the methods here:
 *
 * @method string getName()
 */
class SomeClass extends ParentClass { }
            ->byId($offset)
            ->limit(1)
            ->run() === 1;
    }

    /**
     * Returns a row with a specific id.
     *
     * @see ArrayAccess
     *
     * @return Row|null
     */
    public function offsetGet($offset)
    {
        if (array_key_exists($offset, $this->cache)) {
            return $this->cache[$offset];
        }

        return $this->cache[$offset] = $this->select()
class ParentClass {
    private $data = array();

    public function __call($method, array $args) {
        if (0 === strpos($method, 'get')) {
            return $this->data[strtolower(substr($method, 3))];
        }

        throw new \LogicException(sprintf('Unsupported method: %s', $method));
    }
}

/**
 * If this class knows which fields exist, you can specify the methods here:
 *
 * @method string getName()
 */
class SomeClass extends ParentClass { }
            ->one()
            ->byId($offset)
            ->run();
    }

    /**
     * Store a row with a specific id.
     *
     * @see ArrayAccess
     */
    public function offsetSet($offset, $value)
    {
        //Insert on missing offset
        if ($offset === null) {
            $value['id'] = null;

            $this->insert()
class ParentClass {
    private $data = array();

    public function __call($method, array $args) {
        if (0 === strpos($method, 'get')) {
            return $this->data[strtolower(substr($method, 3))];
        }

        throw new \LogicException(sprintf('Unsupported method: %s', $method));
    }
}

/**
 * If this class knows which fields exist, you can specify the methods here:
 *
 * @method string getName()
 */
class SomeClass extends ParentClass { }
                ->data($value)
                ->run();

            return;
        }

        //Update if the element is cached
        if (isset($this->cache[$offset])) {
            $row = $this->cache[$offset];

            foreach ($value as $name => $val) {
                $row->$name = $val;
            }

            $row->save();

            return;
        }

        //Update if the element it's not cached
        if ($this->offsetExists($offset)) {
            $this->update()
class ParentClass {
    private $data = array();

    public function __call($method, array $args) {
        if (0 === strpos($method, 'get')) {
            return $this->data[strtolower(substr($method, 3))];
        }

        throw new \LogicException(sprintf('Unsupported method: %s', $method));
    }
}

/**
 * If this class knows which fields exist, you can specify the methods here:
 *
 * @method string getName()
 */
class SomeClass extends ParentClass { }
                ->data($value)
                ->byId($offset)
                ->limit(1)
                ->run();
        }
    }

    /**
     * Remove a row with a specific id.
     *
     * @see ArrayAccess
     */
    public function offsetUnset($offset)
    {
        unset($this->cache[$offset]);

        $this->delete()
class ParentClass {
    private $data = array();

    public function __call($method, array $args) {
        if (0 === strpos($method, 'get')) {
            return $this->data[strtolower(substr($method, 3))];
        }

        throw new \LogicException(sprintf('Unsupported method: %s', $method));
    }
}

/**
 * If this class knows which fields exist, you can specify the methods here:
 *
 * @method string getName()
 */
class SomeClass extends ParentClass { }
            ->byId($offset)
            ->limit(1)
            ->run();
    }

    /**
     * Returns the SimpleCrud instance associated with this table.
     *
     * @return SimpleCrud
     */
    public function getDatabase()
    {
        return $this->db;
    }

    /**
     * Returns the table scheme.
     *
     * @return array
     */
    public function getScheme()
    {
        return $this->db->getScheme()[$this->name];
    }

    /**
     * Returns an attribute.
     *
     * @param string $name
     *
     * @return null|mixed
     */
    public function getAttribute($name)
    {
        return $this->db->getAttribute($name);
    }

    /**
     * Defines the Row class used by this table.
     *
     * @param Row $row
     */
    public function setRow(Row $row)
    {
        $this->row = $row;
    }

    /**
     * Defines the RowCollection class used by this table.
     *
     * @param RowCollection $collection
     */
    public function setCollection(RowCollection $collection)
    {
        $this->collection = $collection;
    }

    /**
     * Creates a new row instance.
     *
     * @param array $data The values of the row
     *
     * @return Row
     */
    public function create(array $data = [])
    {
        if (isset($data['id']) && isset($this->cache[$data['id']]) && is_object($this->cache[$data['id']])) {

            return $this->cache[$data['id']];
        }

        $row = clone $this->row;

        foreach ($data as $name => $value) {
            $row->$name = $value;
        }

        return $row;
    }

    /**
     * Creates a new rowCollection instance.
     *
     * @param array $data Rows added to this collection
     *
     * @return RowCollection
     */
    public function createCollection(array $data = [])
    {
        $collection = clone $this->collection;

        foreach ($data as $row) {
            $collection[] = $row;
        }

        return $collection;
    }

    /**
     * Default data converter/validator from database.
     *
     * @param array $data The values before insert to database
     * @param bool  $new  True for inserts, false for updates
     */
    public function dataToDatabase(array $data, $new)

    {
        return $data;
    }

    /**
     * Default data converter from database.
     *
     * @param array $data The database format values
     */
    public function dataFromDatabase(array $data)
    {
        return $data;
    }

    /**
     * Prepares the data from the result of a database selection.
     *
     * @param array $data
     *
     * @return array
     */
    public function createFromDatabase(array $data)
    {
        //Get from cache
        if (isset($this->cache[$data['id']]) && is_object(isset($this->cache[$data['id']]))) {

            return $this->cache[$data['id']];
        }

        if (!is_array($row = $this->dataFromDatabase(array_intersect_key($data, $this->fields)))) {
            throw new SimpleCrudException('Data not valid');
        }

        foreach ($this->fields as $name => $field) {
            $row[$name] = $field->dataFromDatabase($row[$name]);
        }

        $row = $this->create($row);

        $this->cache($row);

        return $row;
class Author {
    private $name;

    public function __construct($name) {
        $this->name = $name;
    }

    public function getName() {
        return $this->name;
    }
}

abstract class Post {
    public function getAuthor() {
        return 'Johannes';
    }
}

class BlogPost extends Post {
    public function getAuthor() {
        return new Author('Johannes');
    }
}

class ForumPost extends Post { /* ... */ }

function my_function(Post $post) {
    echo strtoupper($post->getAuthor());
}
    }

    /**
     * Prepares the data before save into database (used by update and insert).
     *
     * @param array $data
     * @param bool  $new
     *
     * @return array
     */
    public function prepareDataToDatabase(array $data, $new)
    {
        if (!is_array($data = $this->dataToDatabase($data, $new))) {
            throw new SimpleCrudException('Data not valid');
        }

        if (array_diff_key($data, $this->fields)) {
            throw new SimpleCrudException('Invalid fields');
        }

        //Transform data before save to database
        foreach ($data as $key => &$value) {
            $value = $this->fields[$key]->dataToDatabase($value);
        }

        return $data;
    }
}


1		<?php
2
3		namespace SimpleCrud;
4
5		use ArrayAccess;
6
7		/**
8		* Manages a database table.
9		*/
10		class Table implements ArrayAccess
11		{
12		private $db;
13		private $row;
14		private $collection;
15		private $cache = [];
16
17		public $name;
18		public $fields = [];
19		public $queriesModifiers = [];
20
21		/**
22		* Constructor.
23		*
24		* @param SimpleCrud $db
25		* @param string $name
26		*/
27		final public function __construct(SimpleCrud $db, $name)
28		{
29		$this->db = $db;
30		$this->name = $name;
31
32		$this->setRow(new Row($this));
33		$this->setCollection(new RowCollection($this));
34
35		$fieldFactory = $db->getFieldFactory();
36
37		foreach (array_keys($this->getScheme()['fields']) as $name) {
38		$this->fields[$name] = $fieldFactory->get($this, $name);
39		}
40
41		$this->init();
42		}
43
44		/**
45		* Debug info.
46		*
47		* @return array
48		*/
49		public function __debugInfo()
50		{
51		return [
52		'name' => $this->name,
53		'fields' => $this->fields,
54		];
55		}
56
57		/**
58		* Callback used to init the table.
59		*/
60		protected function init()
61		{
62		}
63
64		/**
65		* Store a row in the cache.
66		*
67		* @param Row $row
68		*/
69		public function cache(Row $row)
70		{
71		$this->cache[$row->id] = $row;
72		}
73
74		/**
75		* Clear the current cache.
76		*/
77		public function clearCache()
78		{
79		$this->cache = [];
80		}
81
82		/**
83		* Register a new query modifier
84		*
85		* @param string $name
86		* @param callable $modifier
87		*/
88		public function addQueryModifier($name, callable $modifier)
89		{
90		if (!isset($this->queriesModifiers[$name])) {
91		$this->queriesModifiers[$name] = [];
92		}
93
94		$this->queriesModifiers[$name][] = $modifier;
95		}
96
97		/**
98		* Magic method to create queries related with this table.
99		*
100		* @param string $name
101		* @param array $arguments
102		*
103		* @throws SimpleCrudException
104		*
105		* @return Queries\Query\|null
106		*/
107		public function __call($name, $arguments)
108		{
109		$query = $this->getDatabase()->getQueryFactory()->get($this, $name);
110
111		if (isset($this->queriesModifiers[$name])) {
112		foreach ($this->queriesModifiers[$name] as $modifier) {
113		$modifier($query);
114		}
115		}
116
117		return $query;
118		}
119
120		/**
121		* Check if a row with a specific id exists.
122		*
123		* @see ArrayAccess
124		*
125		* @return bool
126		*/
127		public function offsetExists($offset)
128		{
129		if (array_key_exists($offset, $this->cache)) {
130		return !empty($this->cache[$offset]);
131		}
132
133		return $this->count()
		0 ignored issues – show Documentation Bug introduced 2016-02-17 00:40 UTC by Report Bug Copy Issue Report The method `count` does not exist on `object<SimpleCrud\Table>`? Since you implemented `__call`, maybe consider adding a @method annotation. If you implement `__call` and you know which methods are available, you can improve IDE auto-completion and static analysis by adding a @method annotation to the class. This is often the case, when `__call` is implemented by a parent class and only the child class knows which methods exist: class ParentClass { private $data = array(); public function __call($method, array $args) { if (0 === strpos($method, 'get')) { return $this->data[strtolower(substr($method, 3))]; } throw new \LogicException(sprintf('Unsupported method: %s', $method)); } } /** * If this class knows which fields exist, you can specify the methods here: * * @method string getName() */ class SomeClass extends ParentClass { } Loading history...
134		->byId($offset)
135		->limit(1)
136		->run() === 1;
137		}
138
139		/**
140		* Returns a row with a specific id.
141		*
142		* @see ArrayAccess
143		*
144		* @return Row\|null
145		*/
146		public function offsetGet($offset)
147		{
148		if (array_key_exists($offset, $this->cache)) {
149		return $this->cache[$offset];
150		}
151
152		return $this->cache[$offset] = $this->select()
		0 ignored issues – show Documentation Bug introduced 2016-02-17 00:40 UTC by Report Bug Copy Issue Report The method `select` does not exist on `object<SimpleCrud\Table>`? Since you implemented `__call`, maybe consider adding a @method annotation. If you implement `__call` and you know which methods are available, you can improve IDE auto-completion and static analysis by adding a @method annotation to the class. This is often the case, when `__call` is implemented by a parent class and only the child class knows which methods exist: class ParentClass { private $data = array(); public function __call($method, array $args) { if (0 === strpos($method, 'get')) { return $this->data[strtolower(substr($method, 3))]; } throw new \LogicException(sprintf('Unsupported method: %s', $method)); } } /** * If this class knows which fields exist, you can specify the methods here: * * @method string getName() */ class SomeClass extends ParentClass { } Loading history...
153		->one()
154		->byId($offset)
155		->run();
156		}
157
158		/**
159		* Store a row with a specific id.
160		*
161		* @see ArrayAccess
162		*/
163		public function offsetSet($offset, $value)
164		{
165		//Insert on missing offset
166		if ($offset === null) {
167		$value['id'] = null;
168
169		$this->insert()
		0 ignored issues – show Documentation Bug introduced 2016-02-17 00:40 UTC by Report Bug Copy Issue Report The method `insert` does not exist on `object<SimpleCrud\Table>`? Since you implemented `__call`, maybe consider adding a @method annotation. If you implement `__call` and you know which methods are available, you can improve IDE auto-completion and static analysis by adding a @method annotation to the class. This is often the case, when `__call` is implemented by a parent class and only the child class knows which methods exist: class ParentClass { private $data = array(); public function __call($method, array $args) { if (0 === strpos($method, 'get')) { return $this->data[strtolower(substr($method, 3))]; } throw new \LogicException(sprintf('Unsupported method: %s', $method)); } } /** * If this class knows which fields exist, you can specify the methods here: * * @method string getName() */ class SomeClass extends ParentClass { } Loading history...
170		->data($value)
171		->run();
172
173		return;
174		}
175
176		//Update if the element is cached
177		if (isset($this->cache[$offset])) {
178		$row = $this->cache[$offset];
179
180		foreach ($value as $name => $val) {
181		$row->$name = $val;
182		}
183
184		$row->save();
185
186		return;
187		}
188
189		//Update if the element it's not cached
190		if ($this->offsetExists($offset)) {
191		$this->update()
		0 ignored issues – show Documentation Bug introduced 2016-02-17 00:40 UTC by Report Bug Copy Issue Report The method `update` does not exist on `object<SimpleCrud\Table>`? Since you implemented `__call`, maybe consider adding a @method annotation. If you implement `__call` and you know which methods are available, you can improve IDE auto-completion and static analysis by adding a @method annotation to the class. This is often the case, when `__call` is implemented by a parent class and only the child class knows which methods exist: class ParentClass { private $data = array(); public function __call($method, array $args) { if (0 === strpos($method, 'get')) { return $this->data[strtolower(substr($method, 3))]; } throw new \LogicException(sprintf('Unsupported method: %s', $method)); } } /** * If this class knows which fields exist, you can specify the methods here: * * @method string getName() */ class SomeClass extends ParentClass { } Loading history...
192		->data($value)
193		->byId($offset)
194		->limit(1)
195		->run();
196		}
197		}
198
199		/**
200		* Remove a row with a specific id.
201		*
202		* @see ArrayAccess
203		*/
204		public function offsetUnset($offset)
205		{
206		unset($this->cache[$offset]);
207
208		$this->delete()
		0 ignored issues – show Documentation Bug introduced 2016-02-17 00:40 UTC by Report Bug Copy Issue Report The method `delete` does not exist on `object<SimpleCrud\Table>`? Since you implemented `__call`, maybe consider adding a @method annotation. If you implement `__call` and you know which methods are available, you can improve IDE auto-completion and static analysis by adding a @method annotation to the class. This is often the case, when `__call` is implemented by a parent class and only the child class knows which methods exist: class ParentClass { private $data = array(); public function __call($method, array $args) { if (0 === strpos($method, 'get')) { return $this->data[strtolower(substr($method, 3))]; } throw new \LogicException(sprintf('Unsupported method: %s', $method)); } } /** * If this class knows which fields exist, you can specify the methods here: * * @method string getName() */ class SomeClass extends ParentClass { } Loading history...
209		->byId($offset)
210		->limit(1)
211		->run();
212		}
213
214		/**
215		* Returns the SimpleCrud instance associated with this table.
216		*
217		* @return SimpleCrud
218		*/
219		public function getDatabase()
220		{
221		return $this->db;
222		}
223
224		/**
225		* Returns the table scheme.
226		*
227		* @return array
228		*/
229		public function getScheme()
230		{
231		return $this->db->getScheme()[$this->name];
232		}
233
234		/**
235		* Returns an attribute.
236		*
237		* @param string $name
238		*
239		* @return null\|mixed
240		*/
241		public function getAttribute($name)
242		{
243		return $this->db->getAttribute($name);
244		}
245
246		/**
247		* Defines the Row class used by this table.
248		*
249		* @param Row $row
250		*/
251		public function setRow(Row $row)
252		{
253		$this->row = $row;
254		}
255
256		/**
257		* Defines the RowCollection class used by this table.
258		*
259		* @param RowCollection $collection
260		*/
261		public function setCollection(RowCollection $collection)
262		{
263		$this->collection = $collection;
264		}
265
266		/**
267		* Creates a new row instance.
268		*
269		* @param array $data The values of the row
270		*
271		* @return Row
272		*/
273		public function create(array $data = [])
274		{
275	View Code Duplication	if (isset($data['id']) && isset($this->cache[$data['id']]) && is_object($this->cache[$data['id']])) {
		0 ignored issues – show Duplication introduced 2016-02-17 00:40 UTC by Report Bug Copy Issue Report This code seems to be duplicated across your project. Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository. Loading history...
276		return $this->cache[$data['id']];
277		}
278
279		$row = clone $this->row;
280
281		foreach ($data as $name => $value) {
282		$row->$name = $value;
283		}
284
285		return $row;
286		}
287
288		/**
289		* Creates a new rowCollection instance.
290		*
291		* @param array $data Rows added to this collection
292		*
293		* @return RowCollection
294		*/
295		public function createCollection(array $data = [])
296		{
297		$collection = clone $this->collection;
298
299		foreach ($data as $row) {
300		$collection[] = $row;
301		}
302
303		return $collection;
304		}
305
306		/**
307		* Default data converter/validator from database.
308		*
309		* @param array $data The values before insert to database
310		* @param bool $new True for inserts, false for updates
311		*/
312		public function dataToDatabase(array $data, $new)
		0 ignored issues – show Unused Code introduced 2015-12-02 18:20 UTC by Report Bug Copy Issue Report The parameter `$new` is not used and could be removed. This check looks from parameters that have been defined for a function or method, but which are not used in the method body. Loading history...
313		{
314		return $data;
315		}
316
317		/**
318		* Default data converter from database.
319		*
320		* @param array $data The database format values
321		*/
322		public function dataFromDatabase(array $data)
323		{
324		return $data;
325		}
326
327		/**
328		* Prepares the data from the result of a database selection.
329		*
330		* @param array $data
331		*
332		* @return array
333		*/
334		public function createFromDatabase(array $data)
335		{
336		//Get from cache
337	View Code Duplication	if (isset($this->cache[$data['id']]) && is_object(isset($this->cache[$data['id']]))) {
		0 ignored issues – show Duplication introduced 2016-02-17 00:40 UTC by Report Bug Copy Issue Report This code seems to be duplicated across your project. Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository. Loading history...
338		return $this->cache[$data['id']];
339		}
340
341		if (!is_array($row = $this->dataFromDatabase(array_intersect_key($data, $this->fields)))) {
342		throw new SimpleCrudException('Data not valid');
343		}
344
345		foreach ($this->fields as $name => $field) {
346		$row[$name] = $field->dataFromDatabase($row[$name]);
347		}
348
349		$row = $this->create($row);
350
351		$this->cache($row);
352
353		return $row;
		0 ignored issues – show Bug Best Practice introduced 2016-02-17 00:40 UTC by Report Bug Copy Issue Report The return type of `return $row;` (`SimpleCrud\Row`) is incompatible with the return type documented by `SimpleCrud\Table::createFromDatabase` of type `array`. If you return a value from a function or method, it should be a sub-type of the type that is given by the parent type f.e. an interface, or abstract method. This is more formally defined by the Lizkov substitution principle, and guarantees that classes that depend on the parent type can use any instance of a child type interchangably. This principle also belongs to the SOLID principles for object oriented design. Let’s take a look at an example: class Author { private $name; public function __construct($name) { $this->name = $name; } public function getName() { return $this->name; } } abstract class Post { public function getAuthor() { return 'Johannes'; } } class BlogPost extends Post { public function getAuthor() { return new Author('Johannes'); } } class ForumPost extends Post { /* ... */ } function my_function(Post $post) { echo strtoupper($post->getAuthor()); } Our function `my_function` expects a `Post` object, and outputs the author of the post. The base class `Post` returns a simple string and outputting a simple string will work just fine. However, the child class `BlogPost` which is a sub-type of `Post` instead decided to return an `object`, and is therefore violating the SOLID principles. If a `BlogPost` were passed to `my_function`, PHP would not complain, but ultimately fail when executing the `strtoupper` call in its body. Loading history...
354		}
355
356		/**
357		* Prepares the data before save into database (used by update and insert).
358		*
359		* @param array $data
360		* @param bool $new
361		*
362		* @return array
363		*/
364		public function prepareDataToDatabase(array $data, $new)
365		{
366		if (!is_array($data = $this->dataToDatabase($data, $new))) {
367		throw new SimpleCrudException('Data not valid');
368		}
369
370		if (array_diff_key($data, $this->fields)) {
371		throw new SimpleCrudException('Invalid fields');
372		}
373
374		//Transform data before save to database
375		foreach ($data as $key => &$value) {
376		$value = $this->fields[$key]->dataToDatabase($value);
377		}
378
379		return $data;
380		}
381		}
382

oscarotero / simple-crud