CakePHP: How to use ‘neighbors’ with ‘find’ method

CakePHP: How to use ‘neighbors’ with ‘find’ method

< 1 Minute Read

CakePHP ‘find’ method makes it easier to retrieve data from database. The ‘find’ method can be used to construct anything from extremely simple queries to more complex ones without writing much code. This method can handle most SQL type requests and can be extended for more specific SQL queries.  I will walk you through the below exmple about the basics of working with the ‘find’  method
Here are some inbuilt types in CakePHP

  1. $this->Model->find(‘all’,$condition);
  2. $this->Model->find(‘first’,$condition);
  3. $this->Model->find(‘count’,$condition);
  4. $this->Model->find(‘list’,$condition);
  5. $this->Model->find(‘neighbors’,$condition);
  6. $this->Model->find(‘threaded’,$condition);

First four types are the most commonly used in CakePHP
Now, let’s take a look at an example of ‘neighbors’ type

Example

Let’s assume QuizQuestion is your model and you want to fetch the previous and next entries

Your Controller/action will look like,

public function getNeighbors($id){
 
$this->QuizQuestion->id = $id;
 
$neighbors = $this->QuizQuestion->find('neighbors',array('fields'=>array('id','question_no','description')));
}

A couple of queries will be generated in SQL as,

Query: SELECT 'QuizQuestion'.'id', 'QuizQuestion'.'question_no', 'QuizQuestion'.'description',
'QuizQuestion'.'id' FROM 'quiz_questions' WHERE 'QuizQuestion'.'id' < 38   ORDER BY
'QuizQuestion'.'id' DESC  LIMIT 1
Query: SELECT 'QuizQuestion'.'id', 'QuizQuestion'.'question_no', 'QuizQuestion'.'description',
'QuizQuestion'.'id' FROM 'quiz_questions' WHERE 'QuizQuestion'.'id' > 38   ORDER BY
'QuizQuestion'.'id' ASC  LIMIT 1

Here’s the output

Array
(
[prev] => Array
(
[QuizQuestion] => Array
(
[id] => 37
[question_no] => 1
[description] => Mathematics
)
 
)
[next] => Array
(
[QuizQuestion] => Array
(
[id] => 39
[question_no] => 3
[description] => Mathematics
)
 
)
 
)

Voila! Using the result keys ‘prev’ and ‘next’ you can view the results the way you want.

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Sandeep A. Acharya
sandeep.acharya@andolasoft.co.in
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