I am working on a website that uses PHP and SQL to connect to the database, I'm trying to replace all the SQL with Laravel Query Builder commands.
I am running into a problem with the following code:
public function queryUsers()
{
$db = $this->getMysql();
$stmt = $db->query("SELECT * FROM users");
while ($row = $stmt->fetch()) {
$this->addedUsers[$row['user_id']] = $row["slack_handle"];
$this->addedUserNames[$row['user_id']] = $row["name"];
}
}
I can easily connect to the database using Laravel, however I am not sure how to continue after the code shown below:
public function queryUsers()
{
$stmt = DB::table('users')->get();
}
TLDR:
In PHP/PDO Fetch fetches the next row from a result set, I'm curious if Laravel has an easy way to do the same.
public function queryUsers()
{
$users = DB::table('users')->get();
// $users is array of Std Object.
foreach($users as $key => $user) {
$data['user_id'] = $user->id;
// $user->name, $user->address
}
}
$users = DB::select('select * from users where active = ?', [1]);
foreach($users as $user){ ... }
https://laravel.com/docs/5.8/database#running-queries
Related
Hello i have a question about the zend framework. I have a database with a column having values yes and no. I wish to be able to retrieve from that column only yes values.
This is my code but no success:
public function getListi(array $filterBy = array())
{
$id = 'yes';
$select = $this->sql->select();
$select->from(self::TABLE);
$select->columns(['security_maintenance']);
$select->where(array(
'security_maintenance' => $id
));
$statement = $this->sql->prepareStatementForSqlObject($select);
return $statement->execute();
}
view :
<div class="value-self"><?php
foreach ($domainii as $row) {
echo $row['security_maintenance'];
}
?></div>
controller:
public function indexAction()
{
return new ViewModel(array(
'domainii' => $this->getDomainModel()->getListi(),
));
}
The column is called security_maintenance. the above does not work but when i query by id it works but that does not help me as querying by id will not help me get yes values from the security_maintenance column.
Hello i got it working after doing some research into some zend documentation. This is my code:
public function getListii(array $filterBy = array())
{
$select = $this->sql->select();
$select->from(self::TABLE);
$select->columns(['security_maintenance']);
$select->where->like('security_maintenance', 'yes%');
$statement = $this->sql->prepareStatementForSqlObject($select);
return $statement->execute();
}
You need to specify the columns you want to select.
try adding the below code
$select->columns(['security_maintenance']);
Right now, I'd wrote a function in my model as:
public function getRowsByZipCode($zip)
{
// SQL to get all the rows with the given zip code
$stmt = $this -> getAdapter()
-> query( "SELECT *
FROM
table_name
WHERE
table_name.status = 1 AND
table_name.zip={$zip}");
$resultRows = $stmt->fetchAll();
// -------------------------------------------------------- //
// Convert result set to an array of objects
$resultObjects = array();
// If there is atleast one row found in DB
if(count($resultRows) > 0)
{
// Loop throguh all the rows in the resultset
foreach($resultRows as $resultRow) {
// Create table row and fill it with the details got from DB
$h = $this->createRow();
$h->setFromArray($resultRow);
// Add to the array
$resultObjects[] = $h;
}
}
return $resultObjects;
// -------------------------------------------------------- //
}
Which is working perfectly as I needed. And it is returning me an array that contains the tables row objects(App_Model_TableName Objects), which will be used later for further operations like save and delete etc.
What I really want is to remove the code that loop through the rows I got from the result set and converting each row to an object of App_Model_TableName that I'd wrote inside the comments // --- //.
Thanks in advance.
Firstly, I am assuming you are using PDO.
Try the following
class App_Model_TableName
{
public $status;
public $zip;
// public $other_column;
}
class YourClass
{
protected function getAdapter()
{
// Do adapter stuffs
}
public function query($query, array $param)
{
// When Using PDO always use prepare and execute when you pass in a variable
// This will help prevent SQL injection
$stmt = $this->getAdapter()->prepare($query);
return $query->execute($param);
}
/**
* #return App_Model_TableName[]
*/
public function getRowsByZipCode($zip)
{
// SQL to get all the rows with the given zip code
// This way will help prevent SQL injection
$query = "SELECT * FROM table_name WHERE table_name.status = 1 AND table_name.zip = :zip";
$qData = array(':zip' => $zip);
$results = $this->query($query, $qData);
return $results->fetchAll(PDO::FETCH_CLASS, 'App_Model_TableName');
}
}
Calling YourClass::getRowsByZipCode() will then return you an array of App_Model_TableName objects. You can then access them like:
$data = $instance_of_yourclass->getRowsByZipCode(12345);
foreach ($data as $row)
{
echo $row->zip;
echo $row->do_stuff();
}
All these awesome functions I found on:
http://php.net/manual/en/pdostatement.fetchall.php
http://php.net/manual/en/pdostatement.execute.php
Disclaimer: this code was not tested :(
Be cool but stay warm
Finally, I had found the solution:
public function getRowsByZipCode($zip)
{
// SQL to get all the rows with the given zip code
$stmt = $this -> getAdapter()
-> query( "SELECT *
FROM
table_name
WHERE
table_name.status = 1 AND
table_name.zip={$zip}");
$resultObjects= array();
while($data = $stmt->fetch())
{
$h = $this->createRow();
$h->setFromArray($data);
// Add to array
$resultObjects[] = $h;;
}
return $resultObjects;
}
I had removed the code that do the fetchAll() and loop through each row in the resultset. Now, I am taking each row from the resultset and creating an row of App_Model_TableName object using the data we got from the resultset.
Working perfectly for me.
I am newbie in codeigniter. If I have a model like this :
public function get_data_for_reminder($id) {
$this->db->select('nama_user, keluhan, email, addresed_to');
$query = $this->db->get_where('tbl_requestfix', array('id_request' => $id));
return $query->row();
}
And I try to accessed it from may controller :
public function reminderIT() {
$id = $this->input->post('id');
$data = $this->model_request->get_data_for_reminder($id);
How to Generating Query Results, thanks for the help.
EDIT
I am new in CI, my question is : let's say I want to get the 'nama_user' into an a variable like this :
foreach ($data as $d) {
$name = $d['nama_user'];
}
echo json_encode($name);
I use firebug, it gives me null. I think my foreach is in a problem
In order to return an array from your model call you can use result_array() as
public function get_data_for_reminder($id) {
$this->db->select('nama_user, keluhan, email, addresed_to');
$query = $this->db->get_where('tbl_requestfix', array('id_request' => $id));
return $query->result_array();//<---- This'll always return you set of an array
}
Controller File with your query code
public function reminderIT() {
$id = $this->input->post('id');
$data = $this->model_request->get_data_for_reminder($id);
//Generating Query Results like this because you use $query->row();
$data->nama_user;
$data->keluhan;
$data->email;
$data->addresed_to;
$info_json = array("nama_user" => $data->nama_user, "keluhan" => $data->keluhan, "email" => $data->email, "addresed_to" => $data->addresed_to);
echo json_encode($info_json);
}
MODEL.PHP
public function get_data_for_reminder($id) {
$this->db->select('nama_user, keluhan, email, addresed_to');
$query = $this->db->get_where('tbl_requestfix', array('id_request' => $id));
return $query->row_array();
}
//Generating Query Results if use $query->row_array(); in model file
Controller.php
function reminderIT() {
$id = $this->input->post('id');
$data = $this->model_request->get_data_for_reminder($id);
foreach($data as $row)
{
$myArray[] = $row;
}
echo json_encode($myArray);
You fetched data for selected id it means you get a single row, if you want to get "nama_user" then in your controller:
public function reminderIT() {
$id = $this->input->post('id');
$data = $this->model_request->get_data_for_reminder($id);
$name = $data->nama_user;
echo json_encode($name);
}
I have been trying to figure out how to load the data in a query to an array.
$query->row() //only brings back a single row of data when there are more entries in the database.
If I just use a foreach loop and echo in the model code below, The data is simply displayed on the screen. It's not in a variable or an array. It is just text on the screen all jammed together.
I had a really hard time trying to find a code example that would show me how to use the
$this->db->get_where('table' array('column' => $var);
I finally found it but then the example on codeigniters site only echos the query back to the screen.
http://ellislab.com/codeigniter/user-guide/database/results.html
This is not useful for production.
My controller code is:
public function record(){
/*
* Here the id is being passed to the record
* function to retieve the parent and childrens data
*
*/
$getid['id'] = $this->uri->segment(3);
$accld = $getid['id'];
$data = array();
$this->load->model('account');
$account = new Account();
$account->load($getid['id']);
$data['account'] = $account;
$this->load->model('children');
$children = new Children();
$children->accld($getid['id']);
$data['children'] = $children;
$this->load->view('childeditdisplay', $data );
}
}
My Model code is this:
public function accld($id)
{
$query = $this->db->get_where($this::DB_TABLE, array('accId' => $id));
$c_data = array();
foreach ($query->result() as $row){
$c_data[] = $row ;
}
return $c_data;
/*
* Note:
* I need to figure out how to load to an array to pass back to the
* controller to pass to the display
* I can echo to the screen the results but that is uncontrolled.
*
*/
}
If I do this:
public function accld($id)
{
$query = $this->db->get_where($this::DB_TABLE, array('accId' => $id));
foreach ($query->result() as $row){
echo $row->id ;
// and all the other fields below here
}
}
My rows are echoed to the screen. But there is no control. So any help in getting control of my data would be greatly appreciated.
ANSWER
This is finally what worked to bring back all the results and not just one row.
/**
* Populate from an array or standard class.
* #param mixed $row
*/
public function populate($row) {
foreach ($row as $key => $value) {
$this->$key = $value;
}
}
public function accld($id) {
$query = $this->db->get_where($this::DB_TABLE, array('accId' => $id));
$this->populate($query->result());
}
Just do
$query = $this->db->get_where($this::DB_TABLE, array('accId' => $id));
$_array = $query->result_array();
Do whatever with $_array.
class Application_Model_DbTable_Email extends Zend_Db_Table_Abstract
{
protected $_name = 'memberdetail';
function getUserid($email)
{
$subquery = $this->select()
->from('memberdetail', array('memberid'))
->where('email = ?', $email);
$select = $this->select()
->from('usertable', array('userid'))
->join('memberdetail', 'usertable.userid = memberdetail.memberid')
->where('usertable.userid = ?', $subquery);
$row = $select->query()->fetch();
if (!$row) {
echo "User id not found";
} else {
return $userid = $row['userid'];
}
}
}
Hi, I am trying to return the userid from the above queries. However, the queries does not seemed to be executed as I always get refreshed whenever I call this function.
P.S this set of queries were given to me by another member.
it looks like this is being over thought. According to the info provided usertable.userid = memberdetail.memberid with this being the case your function is simple.
/** this function assumes one and only one email will match a memberid
* this function can be improved by validating $email as existing in DB
* prior to querying DB, should be done at form level but could be accomplished here
* with Zend_Validate_Db_RecordExists()
*/
public function getUserIdFromEmail($email) {
$select = $this->select();
$select->where('email = ?',$email);
$row = $this->fetchRow($select);//fetch a single row
if (!is_null($row) {//fetchRow returns null if no row matched
return $row->memeberid;//return memberid as string/integer = usertable.userid
} else {
//handle error
}
}
It would have been useful to tell people you are using Zend framework.
You need to establish a connection to the database for $this as described in steps 1 and 2 in this link:
http://framework.zend.com/manual/en/zend.db.select.html/
You can try this, if it helps:
function getUserid($email){
$select = $this->select()
->setIntegrityCheck(false)
->from(array('m' => 'memberdetail'), array('b.userid'))
->join(array('b' => 'usertable'), 'b.userid = m.memberid')
->where('m.email = ?', $email);
$row = $this->getAdapter()->fetchAll($select);
if (!$row) {
throw new Exception("User id not found");
} else {
return $row->toArray();
}
}