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POPaginate, filter and sort advanced search with calculated fields by function CakePHP
 

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  1. POPaginate, filter and sort advanced search with calculated fields by function CakePHP
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    <p>I'm looking for a better solution to solve this kind of problem. I need to paginate an advanced search for apartments with many search options: keyword, category, date from, date to, price range (price min, price max), and other fields ... In case you select the two dates I calculate the rental price of each apartment. To calculate the price I can not use a virtualField or one or more subqueries but I have to use a function of the model Apartment because it performs many calculations...</p> <p>So I decided to use the callback afterFind to calculate the rental price and adding a "column" rental_price to the array of query results:</p> <pre><code>public function afterFind($results, $primary){ if($this-&gt;dateFrom &amp;&amp; $this-&gt;dateTo){ foreach ($results as $key =&gt; $val) { if(isset($val['Apartment']['id'])){ $results[$key]['Apartment']['rental_price'] = $this-&gt;calculateRentalPrice($val['Apartment']['id'], $this-&gt;dateFrom, $this-&gt;dateTo); } } } return $results; } </code></pre> <p>On controller:</p> <pre><code>$this-&gt;paginate = array( ... ); // Array with the query $apartments = $this-&gt;paginate('Apartment'); // EDIT foreach ($apartments as $key =&gt; &amp;$apartment) { if($apartment['Apartment']['rental_price'] &lt; $priceMin || $apartment['Apartment']['rental_price'] &gt; $priceMax){ unset($apartments[$key]); } } $this-&gt;set('apartments', $apartments); </code></pre> <p>The problem is that now I want to re-filter the array $apartments with minimum price and maximum price, but if I directly manipulating $apartments I have a problem with pagination. What's the best way to solve this kind of scenario?</p> <pre><code> // EDIT public function calculateRentalPrice($apartmentId, $dateFrom, $dateTo){ $from = new DateTime($dateFrom); $to = new DateTime($dateTo); $period = new DatePeriod($from, DateInterval::createFromDateString('1 day'), $to); $rentalPrice = 0; foreach ($period as $day){ $date = $day-&gt;format("Y-m-d"); $dailyPrice = $this-&gt;ApartmentSeason-&gt;getDailyPrice($apartmentId, $date); $rentalPrice += $dailyPrice; } return $rentalPrice; } public function getDailyPrice($apartmentId, $date){ $apartmentSeason = $this-&gt;find('first', array( 'conditions' =&gt; array( 'ApartmentSeason.apartment_id' =&gt; $apartmentId, "'{$date}' BETWEEN ApartmentSeason.date_from AND ApartmentSeason.date_to", "ApartmentSeason.date_to != " =&gt; $date, ) )); $dailyPrice = $apartmentSeason['ApartmentSeason']['price'] / 7; return $dailyPrice; } </code></pre>
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    1. USmanzapanza
    1. USmanzapanza
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    1. COElaborate on "have a problem with pagination" and add in the SQL that Cake generates when you try to paginate.
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      1. POPaginate, filter and sort advanced search with calculated fields by function CakePHP
      1. USjeremyharris
    2. COThe problem is with paginateCount which does not return the correct number of pages / records
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      1. POPaginate, filter and sort advanced search with calculated fields by function CakePHP
      1. USmanzapanza
    3. COOkay, can we see both the SQL that cake generates for the results *and* the count please?
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      1. POPaginate, filter and sort advanced search with calculated fields by function CakePHP
      1. USjeremyharris
 

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