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set_relation 4th parameter



rolo2012
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Posted 27 April 2012 - 20:30 PM

I have a table 'fuel' that have a relation whit 'car' and the cars have a group
I want to show only de cars of the group 2 (for example) and in the update/insert views
only let to add/modify cars in that group.In the update and in the insert views work fine
but in the list I show all the cars, not only the cars of group 2.

My code is:
$this->grocery_crud->set_table('fuel')
->set_relation('car','car','matricula',array("group"=>2));

I try :
->where('car.group','2')

but the name of the table car change internaly (Ej:car AS ferwr2)

rolo2012
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Posted 30 April 2012 - 14:05 PM

sorry If my English is not comprensible.
I want the crud operate only where car.group= 2 or other number
and it fails in the list view (show all).

If can be done extending the model I apreciate to.

littleflow3r
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Posted 07 May 2012 - 21:35 PM

[color=#0000ff]I have the same question here,[/color]

I have 2 tables,

Table1 structure => project_id, project_name

Table2 structure =>project_id, employee_id

This is n-to-n relationship. Now I want to show list data from Table1 where employee_id = x (In my case, I want to show all the project by employee_id = x [b]ONLY[/b] )
How can I do this? I have tried the set_relation with 4th parameter (where in set_relation) but I dont know, it's still showed all of the data (not just the data where employee_id = x)

Please solution, thank you before :D

rolo2012
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Posted 08 May 2012 - 15:06 PM

I do it extending the model in the get_list I just copy the method and add some lines, line for get the unique name that asign the grocery crud in the join $vehiculo_fieldname=$unique_field_name; $vehiculo_joinname=$unique_join_name; and a where clause
$this->db->where("$vehiculo_joinname.grupo_trabajo",$this->grupo_trabajo);

And in the update and delete preforms some checks that only can operate in a grupo_trabajo (group_id its strores in seccion)


<?php
// application/models/grocery_crud_vehiculo_model.php
class grocery_crud_vehiculo_model extends grocery_CRUD_Model {
protected $grupo_trabajo=-1;

function __construct()
{
$ci=&get_instance();
$this->grupo_trabajo=$ci->session->userdata('grupo_trabajo');
parent::__construct();
}


function get_list()
{
if($this->table_name === null)
return false;

$select = "{$this->table_name}.*";
$vehiculo_fieldname='';
$vehiculo_joinname='';

if(!empty($this->relation))
foreach($this->relation as $relation)
{
list($field_name , $related_table , $related_field_title) = $relation;
$unique_join_name = $this->_unique_join_name($field_name);
$unique_field_name = $this->_unique_field_name($field_name);

if(strstr($related_field_title,'{'))
$select .= ", CONCAT('".str_replace(array('{','}'),array("',COALESCE({$unique_join_name}.",", ''),'"),str_replace("'","\\'",$related_field_title))."') as $unique_field_name";
else
$select .= ", $unique_join_name.$related_field_title as $unique_field_name";

if($this->field_exists($related_field_title))
$select .= ", {$this->table_name}.$related_field_title as '{$this->table_name}.$related_field_title'";
if($related_table=='vehiculo'){
$vehiculo_fieldname=$unique_field_name;
$vehiculo_joinname=$unique_join_name;
}
}
$this->db->select($select, false);

$this->db->where("$vehiculo_joinname.grupo_trabajo",$this->grupo_trabajo);
$results = $this->db->get($this->table_name)->result();
//echo $this->db->last_query();
//echo "$vehiculo_fieldname $vehiculo_joinname";
return $results;
}


function db_update($post_array, $primary_key_value)
{
$primary_key_field = $this->get_primary_key();
$this->db->from($this->table_name);
$this->db->join('vehiculo',"vehiculo.id={$this->table_name}.vehiculo");
$this->db->where($this->table_name.".".$primary_key_field,$primary_key_value);
$this->db->where('vehiculo.grupo_trabajo',$this->grupo_trabajo);
if($this->db->count_all_results()<=0)return false;
$this->db->from('vehiculo');
$this->db->where('grupo_trabajo',$this->grupo_trabajo);
$this->db->where('vehiculo.id',$post_array['vehiculo']);
if($this->db->count_all_results()<=0)return false;

return parent::db_update($post_array, $primary_key_value);
}

function db_insert($post_array)
{
$this->db->from('vehiculo');
$this->db->where('grupo_trabajo',$this->grupo_trabajo);
$this->db->where('vehiculo.id',$post_array['vehiculo']);
if($this->db->count_all_results()<=0){
return false;
}
return parent::db_insert($post_array);
}

function db_delete($primary_key_value)
{
$primary_key_field = $this->get_primary_key();
$this->db->from($this->table_name);
$this->db->join('vehiculo',"vehiculo.id={$this->table_name}.vehiculo");
$this->db->where($this->table_name.".".$primary_key_field,$primary_key_value);
$this->db->where('vehiculo.grupo_trabajo',$this->grupo_trabajo);
if($this->db->count_all_results()<=0){
//echo $this->db->last_query();
return false;
}

return parent::db_delete($primary_key_value);
}

}

In the controller i use:

$this->grocery_crud->set_model('grocery_crud_vehiculo_model');
$this->grocery_crud
->set_relation('vehiculo','vehiculo','matricula',
array("vehiculo.grupo_trabajo"=>$this->session->userdata('grupo_trabajo')));

The 4th parameter only restrict the add/edit combo

It's work fine for me.
I have 2 tables
The table vehiculo has a grupo_trabajo_id and only operate in the group that i set.
And supplies that have a vehicle_id
The code has some spanish words tell me if you don't understand.
I hope to be useful