Zendframework 2. ID parameter in SQL query - php

Question

I kind of understand what is needed but I am new to ZF2 so just need pushing in the right direction.
I currently have a route set up, for example, viewsystem/1, which has the form [action][id].
When a person clicks on a link, they change their id, for example, viewsystem/5.
In the model where I run the SQL, I wish the id to change for the SQL statement:
->where('system.Id = "'.$id.'" ')
Can anyone explain where I can "get" the parameter and use this as a variable in the SQL?
Do I need to do something in the controller? Can I not just use a $_GET or something?
I have updated this, as it is quite clear to see what is happening. The route for viewsystemAction() is different to the route of ajaxviewsystemAction().
When I use $id = (int) $this->params()->fromRoute('id', 0); inside the viewsystemAction(), it echoes back the page link id route, for example viewsystem/220
When I use $id = (int) $this->params()->fromRoute('id', 0); inside the ajaxviewsystemAction(), it echoes back the 0 as the route id.
I need the route to be passed through this function
private function getSourceViewAllSystems($id)
{
return $this->getSystemsTable()->fetchViewAllSystems($id);
}
public function viewsystemAction()
{
$id = (int) $this->params()->fromRoute('id', 0);
echo $id; //i see the correct id for example 220 from the route in the browser
}
public function ajaxviewsystemAction()
{
$id = (int) $this->params()->fromRoute('id', 0);
echo $id; //to see the id of the route with the ajax page
//displays 0 and not the route id from the viewsystemAction
$table = new TableExample\Advance();
$table->setAdapter($this->getDbAdapter())
->setSource($this->getSourceViewAllSystems($id))
->setParamAdapter($this->getRequest()->getPost());
return $this->htmlResponse($table->render('custom' , 'custom-b2'));
}
To try explain a bit better here is my issue.
As you can see i am passing a param as you suggested into fetchViewAllSystems($id = 1);
fetchViewAllSystems is in my model and works perfectly, with the 1 there, it displays the system1.
however, the 1 needs to be the url id.
$id = (int) $this->params()->fromRoute('id', 0);
This gets the ID in the viewaction, but viewaction does not control the fetchViewAllSystems so it is quite tricky to pass this value from the url.
private function getSourceViewAllSystems()
{
return $this->getSystemsTable()->fetchViewAllSystems($id = 1);
}
public function viewsystemAction()
{
$id = (int) $this->params()->fromRoute('id', 0);
/*if (!$id) {
return $this->redirect()->toRoute('systems', array(
'action' => 'activesystems'
));
}*/
echo $id;
}
public function ajaxviewsystemAction()
{
/*$table = new TableExample\Base();
$table->setAdapter($this->getDbAdapter())
->setSource($this->getSourceViewAllSystems())
->setParamAdapter($this->getRequest()->getPost())
;
return $this->htmlResponse($table->render());*/
$table = new TableExample\Advance();
$table->setAdapter($this->getDbAdapter())
->setSource($this->getSourceViewAllSystems())
->setParamAdapter($this->getRequest()->getPost())
;
return $this->htmlResponse($table->render('custom' , 'custom-b2'));
echo $id;
}

Answer 1

To get a $_GET params in your controller, do like this:
// your IndexController.php
public function indexAction(){
$viewmodel = new ViewModel();
// get the ID
$id = $this->params('id', null); // null is my default value
// ...
return $viewmodel;
}
I highly recommend you to check this great example : https://github.com/akrabat/zf2-tutorial - http://zf2.readthedocs.org/en/latest/ref/overview.html
Check this line https://github.com/akrabat/zf2-tutorial/blob/master/module/Album/src/Album/Controller/AlbumController.php#L43
Get params
$id = $this->params('id', null); // null is my default value
or
$id = $request->query()->get('foo', 'default value');
Ref: http://zend-framework-community.634137.n4.nabble.com/ZF2-How-to-set-get-params-in-url-td4076050.html
controller.php
I don't know what getSystemsTable() returns and also fetchViewAllSystems but it should be like this
private function getSourceViewAllSystems($id = 1)
{
return $this->getSystemsTable()->fetchViewAllSystems($id);
}
public function viewsystemAction()
{
$id = $this->params()->fromRoute('id', null);
if (!$id) {
return $this->redirect()->toRoute('systems', array(
'action' => 'activesystems'
));
}
echo $id;
}
public function ajaxviewsystemAction()
{
$id = $this->params()->fromRoute('id', null);
$id = $this->params()->fromQuery()['id']; // if from ajax GET param
$table = new TableExample\Advance();
$table->setAdapter($this->getDbAdapter())
->setSource($this->getSourceViewAllSystems($id)) // send the current id
->setParamAdapter($this->getRequest()->getPost())
;
return $this->htmlResponse($table->render('custom' , 'custom-b2'));
}