Good I'm starting with php and codeigniter, I have the following problem I'm running an array from my model, which is the result of a query, how can I read one by one my records in the controller?
function getCustomers() {
$sql = "SELECT * FROM customers";
$query = $this->db->query($sql);
if ($query->num_rows() > 0) {
$i = 0;
foreach($query->result() as $row) {
$img[$i]['id'] = $row->id;
$img[$i]['name'] = $row->name;
$img[$i]['Location'] = $row->Location;
$img[$i]['telephone'] = $row->telephone;
$i++;
}
return $img;
}
}
You can return array to the controller by loading the model into the controller like this.
$this->load->model('yourmodel');
$array = $this->yourmodel->yourmodelsmethod();
First you have to return this array to your controller like
$this->load->model('yourmodel');
$array['test'] = $this->yourmodel->yourmodelsmethod();
foreach($test as $key=>$value)
{
echo $value;
}
By doing this you can easily print your data from model in controller
Related
I have the following function which fetches some data from a MySQL table:
function readQuestion ($quizType, $questionId) {
$data = array();
$query = $this->dbConnection->query("SELECT * FROM $quizType WHERE id = $questionId");
foreach ($query as $row) {
var_dump($row);
};
echo $data
}
How can I push all the returned data into an array, where each member is indexed by a number?
Do I need to use echo or return at the end? They seem to have the same effect.
EDIT: Is this the correct way of returning results of the query? I am passing it to the front-end.
$questionData = $controller->readQuestion($quizType, $questionId);
return $questionData;
In general your function must looks like:
function readQuestion ($quizType, $questionId) {
$data = array();
$query = $this->dbConnection->query("SELECT * FROM $quizType WHERE id = $questionId");
return $query;
}
But, you have to look what is inside $query variable. If it is array - just return this array, if not - maybe it is some iterator, hence you have to check it and try to find method like toArray or something like that... Otherwise, you have to do something like:
$data = [];
foreach ($query as $row) {
$data[] = $row;
};
return $data;
Now you can use this function like:
var_dump(readQuestion($quizType, $questionId));
Take a look up here on how to secure your data.
Anyway, as I said in the comment you cannot use echo on an Array. And you can't do anything with the output of var_dump.
Change var_dump($row); for $data[] = $row;
and change echo $data; for return $data;
function readQuestion ($quizType, $questionId) {
$data = array();
$query = $this->dbConnection->query("SELECT * FROM $quizType WHERE id = $questionId");
foreach ($query as $row) {
$data=$row;
};
return $result;
}
I want to pass multiple id in where condition how to do it?
A query fetches org_id from database.
now I want to pass that in my where condition, so how to do it?
I tried foreach loop:
Below is my code:
$devices = $this->activation_m->get_activated_devices();
$org_id = array(); // create org_id array
foreach ($devices as $row)
{
$org_id[]= $row['org_id']; // assign ids into array
//$companys =$this->data['devices'] = $this->activation_m->get_company($org_id); // don't call again and again
}
//Now $org_id is array
$companys =$this->data['devices'] = $this->activation_m->get_company($org_id);
echo $this->db->last_query();
Model Code
public function get_activated_devices()
{
$this->db->select('*');
$this->db->join('sitekey','sitekey.site_key = activation.site_key');
$this->db->from('activation');
$query =$this->db->get();
$result = $query->result_array();
return $result;
}
public function get_company($org_id)
{
$this->db->select('*');
$this->db->join('sitekey','sitekey.org_id = company.id');
$this->db->join('activation','sitekey.site_key = activation.site_key');
$this->db->where('company.id IN',(implode(',',$org_id))); // see the change here
$this->db->from('company');
$query =$this->db->get();
$result = $query->result_array();
return $result;
}
now currently my query passes only one org_id , I want to pass all the org_id I get from my first query.
You can use where_in from active-records codeigniter
as
$devices = $this->activation_m->get_activated_devices();
$org_id = array();
foreach ($devices as $row)
{
$org_id[] = $row['org_id'];
}
$companys =$this->data['devices'] = $this->activation_m->get_company($org_id);
if( $companys->num_rows() > 0 )
{
echo "<pre>";
print_r( $companys->result());
echo "</pre>";
}
And for Model
public function get_company($org_ids = array())
{
$this->db->select('*');
$this->db->join('sitekey','sitekey.org_id = company.id');
$this->db->join('activation','sitekey.site_key = activation.site_key');
$this->db->where_in('company.id', $org_ids ); //this is condition
$this->db->from('company');
return $this->db->get();
}
You can use codeigniter's $this->db->or_where() for the purpose. Just traverse the array of organization id's and apply or_where conditions.
$this->db->select('*');
$this->db->join('sitekey','sitekey.org_id = company.id');
$this->db->join('activation','sitekey.site_key = activation.site_key');
foreach($org_id as $org)
{ // where $org is the instance of one object of active record
$this->db->or_where('company.id',$org);
}
$this->db->from('company');
$query =$this->db->get();
$result = $query->result_array();
return $result;
Another way to do this is to make a custom query by traversing the array like this and appending where clauses in string.
I have a function in the controller that gets a string and then queries the database (via the model) for records that have this string as their name. This works fine with English but I have a problem when the input is in Hebrew. When I echo the string I see something like %D7%91 and the query fails.
All database tables entries are defined as utf8_general_ci.
My controller code:
function get_records_by_name($name)
{
echo 'searching for: '.$name.'</br>';
$keys = new DMkeys() ;
$query = $keys->get_keys();
$arr = array();
$count = 0;
foreach ($query->result() as $row)
{
if(stristr($row->name, $name) != FALSE)
{
$arr[] = $row->name;
$count++;
echo $row->name.'</br>';
}
}
$result = array('count' => $count, 'list' => $arr);
echo json_encode($result) ;
}
My model code:
function get_keys()
{
$query = $this->db->get('keys');
return $query;
}
Thanks,
Simon
You need to decode the variable before using it, try:
$name = urldecode($name);
I'm trying to get my head around grabbing all variable I need in Codeigniter and then passing those values to the view.
I understand the concept, but am getting stuck on iterating through an array and adding on another array to each of its keys.
The $data['items'] array contains data passed from a model via the get_all() function. The query is basically "Select * from items".
Each item has multiple features and pictures. In order to get the appropriate values I need the id of an item. I can grab this from the first array ($data['items']) which I can then pass to a model function.
I keep getting various errors when trying to do this via the code below. I've tried defining the features and pictures arrays before the foreach loop - still get errors.
I'm sure my syntax is just wrong. Any help is welcome.
$data['items'] = $this->amazon->get_all();
foreach ($data['items'] as $data )
$id = $data->id;
$data['features'] = $this->amazon->get_features($id);
$data['pictures'] = $this->amazon->get_pictures($id);
}
Edit
Based on feedback I've updated the code to this (lines 24 - 30 of the code):
$items = $this->amazon->get_all();
for($i=0; $i<count($items);$i++) {
$data = $items[$i];
$id = $data->id;
$items[$i]['features'] = $this->amazon->get_features($id);
$items[$i]['pictures'] = $this->amazon->get_pictures($id);
}
PHP is complaining with this:
PHP Fatal error: Cannot use object of type stdClass as array in /var/www/ci/application/controllers/main.php on line 28
Here are the functions from the amazon model:
function get_all()
{
$query = $this->db->get('items');
return $query->result();
}
function get_pictures($id) {
$query = $this->db->query("SELECT link FROM pictures WHERE item_id='$id' AND type IN('thumb_set')");
$style = "border-style:solid; border-width:1px";
$class = "modal-thumb";
$results = '';
foreach ($query->result() as $row) {
$results .= "<li style='$style' class='$class'><img src='$row->link' alt=''/></li>";
}
return $results;
}
function get_features($id) {
$query = $this->db->query("SELECT content FROM features WHERE item_id='$id' ORDER BY feature_num DESC");
$results = '';
foreach ($query->result() as $row) {
$results .= "<li>";
$results .= $row->content;
$results .= "</li>";
}
return $results;
}
I'm thinking i need to use 'results_array()' instead of 'results()'? Are my results returned as an object instead of an array the way things are now?
As you said, you have syntax error in the foreach statement, you are redefining the $data array.
foreach ($data['items'] as $data )
Try this:
$items = $this->amazon->get_all();
for($i=0; $i<count($items);$i++){
$data = $items[$i];
$id = $data->id;
$items[$i]['features'] = $this->amazon->get_features($id);
$items[$i]['pictures'] = $this->amazon->get_pictures($id);
}
i searched all over the web or i just don't see it.
I want to do the following:
<?php
function abc(){
$sql = "SELECT * FROM table";
$result = mysql_fetch_assoc($sql);
$data = mysql_fetch_assoc($result);
}
?>
<? while(abc()) : ?>
<?=article_title()?>
<?=article_content()?>
<?=endwhile;?>
Could somebody give me a direction and/or example?
Thank you very much
PHP does not have generator/iterator functions, so you cannot do that.
You can however return an array and iterate over that array:
function abc() {
// ...
$rows = array();
while($row = mysql_fetch_assoc($result)) { $rows[] = $row; }
return $rows;
}
foreach(abc() as $row) {
// do something
}
If the functions you call need access to the row, pass it as an argument. Using global variables for it would be very bad/nasty
have you tried to do something like that?
<?php
function getData(){
//get the data from the database
//return an array where each component is an element found
}
$elems = getData();
foreach($elems as $e){
doSomethingWith($e);
}