× This forum has been locked. Please submit new Feature Requests on GitHub: github.com/Jensen-Technologies/component-creator-issues/issues

Foreign key field additional SQL parameters

8 anos 7 meses atrás #1295 por RATE IT SERVICES, SIA
Foreign key field additional SQL parameters foi criado por RATE IT SERVICES, SIA
Hi there!

Would be great if a foreign key field could have additional parameter for select query.

Now we select table, key field and value field ..

But how about extra query? For example, I want to select only those records where certain fields have specific value.

SELECT id, name from #__sometable where otherfield=1 ..

I see that this could be possible with SQL list, but then there's no EMPTY RECORD (like Please select value (0) ) ..

I tried to do so with UNION ..

(SELECT '0' as id, 'Please select' as name from #__sometable LIMIT 1) UNION (SELECT id, name from #__sometable where parentid=0)

But then I get mysql errors when any field has selected that parentid field .. HAVING id='1'

thanks

Por favor Acessar ou Registrar para participar da conversa.

8 anos 7 meses atrás #1297 por RATE IT SERVICES, SIA
Respondido por RATE IT SERVICES, SIA no tópico Foreign key field additional SQL parameters
administrator\models\forms\tablename.xml

add new attribute to field : where="parent_id=0"

administrator\models\fields\foreignkey.php

private $where_extra;

protected function getInput()
{
.......
$this->where_extra = (string) $this->getAttribute('where');

........

if($this->where_extra != '')
{
$query->where($this->where_extra);
}

....
}



works fine for me, it's just annoying to modify all this after rebuild .. :(

Por favor Acessar ou Registrar para participar da conversa.

8 anos 3 meses atrás #1399 por Jeremy Morris
Respondido por Jeremy Morris no tópico Foreign key field additional SQL parameters
I have also added a "where" attribute to limit foreignkey results based on a condition.

// If the return is to be limited by condition
$this->where = ( trim ( $this->getAttribute('where') ) <> '' ) ? (string) trim( $this->getAttribute('where') ) : NULL;
.......
// add where filtering, if set
if ( $this->where ) {
$query->where($this->where);
} // end if


I have also found that displaying a completely empty select box is pretty useless so I set empty foreignkey fields to hide.

if ( count( $options ) ) {
$html = JHtml::_('select.genericlist', $options, $this->name, $input_options, 'value', 'text', $value, $this->id);
} else {
$html = '';
$this->hidden = true;
}

An additional attribute, such as "hideempty", could be helpful.

Por favor Acessar ou Registrar para participar da conversa.

Tempo para a criação da página:0.051 segundos
Powered by Fórum Kunena

We use cookies so that you can place orders and we can provide a better service. You can control the use of cookies at the individual browser level. If you reject cookies, you may still use our website, but your ability to use some features or areas of our website may be limited.