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POHow to make model "hasMany" and "belongsTo"? (Same like cakePHP)
 

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  1. POHow to make model "hasMany" and "belongsTo"? (Same like cakePHP)
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    <p>I am currently working on my mvc framework (in PHP). I saw that cakePHP has ability to use "belongsTo" and "hasMany" features. I am trying to create my own feature and I hit a problem.</p> <p>Lets say that we have appointment table (id, where, date, year_id) and year table (id, year). I know this example could be done with one table without a problem, but it's just an example.</p> <pre><code>class appointment_model extends model{ public $_belongs_to= array('table'=&gt;'year','field_connector'=&gt;'year_id'); public $one_value; } </code></pre> <p>......</p> <pre><code>class year_model extends model{ public $_has_many= array('table'=&gt;'appointment','field_connector'=&gt;'year_id'); public $many_values; } </code></pre> <p>....</p> <pre><code>class model{ private function select($query=null){ if(!$query)die("Query cannot be null. Line num: " . __LINE__); $results = $this-&gt;_db-&gt;mysql_select($query); if(count($results)==1){ $one = $this-&gt;initialize($results[0]); $this-&gt;_do_for_other_tables($one); return $one; }elseif(count($results)&gt;1){ $returns = array(); foreach($results as $result){ $one = $this-&gt;initialize($result); $returns[] = $this-&gt;_do_for_other_tables($one); } return $returns; }else{ return null; } } private function _do_for_other_tables(&amp;$one, $rec=1){ if(property_exists($this, 'many_values')){ if(!empty($one-&gt;many_values))return; $many = functions::load_model($this-&gt;_has_many["table"]); $res = $many-&gt;find_by($this-&gt;_has_many["field_connector"], $one-&gt;id); $one-&gt;many_values = $res; } elseif(property_exists($this, 'one_value')){ if(!empty($one-&gt;_belongs_to))return; $only_one = functions::load_model($this-&gt;_belongs_to["table"]); $field = $this-&gt;_belongs_to['field_connector']; $res = $only_one-&gt;find_by('id', $one-&gt;$field); $one-&gt;one_value = $res; } } } </code></pre> <p>Basically what happens here is that I enter into infinite loop. Any suggestion how can I fix that? If I need to explain it more, just say it.</p> <p>Thanks :).</p>
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    1. UStereško
    1. USVizualni
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      1. POHow to make model "hasMany" and "belongsTo"? (Same like cakePHP)
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    1. COWhy did you reinvent the wheel again? Doctrine do that out of the box!
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      1. POHow to make model "hasMany" and "belongsTo"? (Same like cakePHP)
      1. USFrancesco
    2. CO@Francesco: It's not because you don't want to know how it works under the hood that others don't too. I built zillions of framework myself to suit my needs because everyone of them didn't suit mine. Same thing for Vizualni here probably...
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      1. POHow to make model "hasMany" and "belongsTo"? (Same like cakePHP)
      1. USMathieu Dumoulin
 

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Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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