I'm using tutorial-master https://docs.phalconphp.com/en/latest/reference/tutorial.html the Create step from CRUD is awesome, I can input data to database. But I don't understand how to generating data from table using query.
this code didn't work because I use $application = new Application($di); not micro.
// Retrieves all robots $app->get('/api/robots', function () use ($app) {
$phql = "SELECT * FROM Robots ORDER BY name";
$robots = $app->modelsManager->executeQuery($phql);
$data = array();
foreach ($robots as $robot) {
$data[] = array(
'id' => $robot->id,
'name' => $robot->name
);
}
echo json_encode($data);
});
I want to have
$query="SELECT * FROM ospos ORDER BY ospoId"; and output $data = array(); echo jsone_encode($data) and resulting same result as micro code.. please help Thank you.
UPDATE: your above query using models.
$robots = Robots::find([
'order' => 'name'
]);
Find the below mentioned link (PhalconPHP model docs)
https://docs.phalconphp.com/en/latest/reference/models.html
Hope this link have an answer for your issue.
I couldn't find any satisfying answer so i thought of commenting how i did this.
In a controller do the following:
use Phalcon\Mvc\Controller;
$this->aricleModel = new Articles();
class IndexController extends Controller
{
public function indexAction()
{
$articles = Articles::find();
if ($articles) {
foreach ($articles as $article) {
echo $article->title;
echo "<br>";
}
}
}
}
Assuming you already made the model. the key is this: $this->aricleModel = new Articles(); Without it foreach won't work.
Related
I have a master table jobs with multiple location in separate table job_location. Now I am not able to update/delete, if extra rows found from job_location. Now why I am saying DELETE is because sync() did this, but it's related to many-to-many relation. I am new to laravel, just trying to get eloquent approach to achieve this, otherwise deleting all rows and inserting can be done easily OR updating each and delete remaining is also an option but I wonder Laravel has something for this.
In every request I get multiple job locations(with unchanged/changed city,phone_number,address) which is creating trouble.
Some codeshots:
Model: [Job.php]
class Jobs extends Model
{
protected $fillable = [
'job_id_pk', 'job_name','salary'
];
public function joblocation() {
return $this->hasMany('\App\JobLocation', 'job_id_fk', 'job_id_pk');
}
}
Model:[JobLocation.php]
class JobLocation extends Model
{
protected $fillable = [
'jobl_id_pk', 'job_id_fk','city', 'address', 'phone_number'
];
public function job() {
return $this->belongsTo('\App\Jobs', 'job_id_fk', 'job_id_pk');
}
}
Controller:[JobController.php]
function jobDetail() {
if($params['jid']) {
// update
$obj = \App\Jobs::find($params['jid']);
$obj->job_name = $params['name'];
$obj->salary = $params['salary'];
$obj->save();
} else {
// create new
$data = array(
'job_name' => $params['name'],
'salary' => $params['salary'],
);
$obj = \App\Jobs::create($data);
}
// don't bother how this $objDetail has associative array data, it is processed so
foreach ($params['jobLocations'] AS $key => $objDetail) {
$jobLoc = new \App\JobLocation;
$jobLoc->city = $objDetail['city'];
$jobLoc->phone_number = $objDetail['phone_number'];
$jobLoc->address = $objDetail['address'];
$jobLoc->job()->associate($obj);
$obj->jobLoc()->save($jobLoc);
}
}
In this approach I am able to save all job locations, but I am using same function to update also. Please tell how I can update jobLocations if present. I am ok to loose previous entries, but it would be good if previous gets updated and new get entered OR if we have extra entries they get deleted. I know sounds weird but still guide me a way.
Yea, you cannot use the same function, do this
$jobs = \App\Jobs::find($params['jid']);
foreach ($params['jobLocations'] as $key => $objDetail) {
$joblocation = $jobs->joblocation->where('jobl_id_pk', $objDetail['some_id'])->first();
//here update you job location
$joblocation->save();
}
Something like this:
Controller:[JobController]
public function jobDetail() {
if( !empty($params['jid']) ) {
// update
$job = \App\Jobs::find($params['jid']);
$job->job_name = $params['name'];
$job->salary = $params['salary'];
$job->save();
} else {
// create new
$data = array(
'job_name' => $params['name'],
'salary' => $params['salary'],
);
$job = \App\Jobs::create($data);
}
$locationDetails = !empty($params['jobLocations']) ? $params['jobLocations'] : [];
$jobLocations = array_map(function($location) use($job) {
$location = array_merge($location, [ 'job_id_fk' => $job->job_id_pk ]);
return \App\JobLocation::firstOrNew($location);
}, $locationDetails);
$job->jobLocations()->saveMany($jobLocations);
}
I have an application that takes a value from a dropdown list and uses it to filter an index view. Here is the controller code for that:
public function browse() {
$this->loadModel('ReqMissionId');
$missions = $this->ReqMissionId->find('list', array('fields' => array('mission_id', 'mission_id')));
$this->set(compact('missions'));
}
This is the Controller code for the index:
public function index() {
if($this->request->is('post')) {
$options = array('Requirement.mission_id' => $this->request->data['Requirement']['mission_id']);
$this->set('mission_id', $this->request->data['Requirement']['mission_id']); //Used to display the mission_id on the index page.
$this->Paginator->settings = $this->paginate;
$this->set('requirements', $this->Paginator->paginate('Requirement', $options));
}
}
The dropdown in the View is simple:
<?php
echo $this->Form->input('mission_id', array('label' => 'Mission ID'));
echo $this->Form->submit(__('View'));
echo $this->Form->end();
?>
My problem is pagination. Since Cake does a postback when it sorts the columns, the value of 'Requirement.mission_id' gets lost and I get a "Call to member function sort() on null" error. I feel like I can take care of this with a session variable, but I'm unclear on the implementation. Is that correct, or is there something else I should be doing?
Check the session for the model that you're paginating. Try something like this:
Try something like this:
if(!empty($this->request->data['Requirement']))
$this->Session->write('Requirement', $this->request->data['Requirement']);
else
$this->request->data['Requirement'] = $this->Session->read('Requirement');
To get it into your $options. Try use array merge like this:
$options = array_merge($options, $this->getOptions($this->request->data));
Implement getOptions under:
function getOptions($data = null){
$options = array();
if(!empty($data['Requirement']['mission_id']))
$options = array_merge($options, array('mission_id' => $data['Requirement']['mission_id']));
return $options;
}
I'm new to Laravel and at the moment I have a piece of code in a Controller which without the while loop it works, it retrieves my query from the database.
public function dash($id, Request $request) {
$user = JWTAuth::parseToken()->authenticate();
$postdata = $request->except('token');
$q = DB::select('SELECT * FROM maps WHERE user_id = :id', ['id' => $id]);
if($q->num_rows > 0){
$check = true;
$maps = array();
while($row = mysqli_fetch_array($q)) {
$product = array(
'auth' => 1,
'id' => $row['id'],
'url' => $row['url'],
'locationData' => json_decode($row['locationData']),
'userData' => json_decode($row['userData']),
'visible' => $row['visible'],
'thedate' => $row['thedate']
);
array_push($maps, $product);
}
} else {
$check = false;
}
return response()->json($maps);
}
I am trying to loop through the returned data from $q and use json_decode on 2 key/val pairs but I can't even get this done right.
Don't use mysqli to iterate over the results (Laravel doesn't use mysqli). Results coming back from Laravel's query builder are Traversable, so you can simply use a foreach loop:
$q = DB::select('...');
foreach($q as $row) {
// ...
}
Each $row is going to be an object and not an array:
$product = array(
'auth' => 1,
'id' => $row->id,
'url' => $row->url,
'locationData' => json_decode($row->locationData),
'userData' => json_decode($row->userData),
'visible' => $row->visible,
'thedate' => $row->thedate
);
You're not using $postdata in that function so remove it.
Do not use mysqli in Laravel. Use models and/or the DB query functionality built in.
You're passing the wrong thing to mysqli_fetch_array. It's always returning a non-false value and that's why the loop never ends.
Why are you looping over the row data? Just return the query results-- they're already an array. If you want things like 'locationData' and 'userData' to be decoded JSON then use a model with methods to do this stuff for you. Remember, with MVC you should always put anything data related into models.
So a better way to do this is with Laravel models and relationships:
// put this with the rest of your models
// User.php
class User extends Model
{
function maps ()
{
return $this->hasMany ('App\Map');
}
}
// Maps.php
class Map extends Model
{
// you're not using this right now, but in case your view needs to get
// this stuff you can use these functions
function getLocationData ()
{
return json_decode ($this->locationData);
}
function getUserData ()
{
return json_decode ($this->userData);
}
}
// now in your controller:
public function dash ($id, Request $request) {
// $user should now be an instance of the User model
$user = JWTAuth::parseToken()->authenticate();
// don't use raw SQL if at all possible
//$q = DB::select('SELECT * FROM maps WHERE user_id = :id', ['id' => $id]);
// notice that User has a relationship to Maps defined!
// and it's a has-many relationship so maps() returns an array
// of Map models
$maps = $user->maps ();
return response()->json($maps);
}
You can loop over $q using a foreach:
foreach ($q as $row) {
// Do work here
}
See the Laravel docs for more information.
I seem to be having some trouble creating a form input that allows checkboxlists and nested sets to work together.
What I'd like, is something exactly like what bookbub does:
http://i.imgur.com/PfpgSf5.jpg
Right now in my database I have it structured as follows:
Category table
- id
- name
- parent_id
Basically, my idea is to display everything on the _form that has parent_id as null as a heading (no checkbox) and everything that has a parent_id as a checkbox under the appropriate heading.
However, the only solution that I can get that's close doesn't seem to allow me to have checkboxes already checked if we're updating a user's preferences. It does however display things exactly how I would like. Here's what I have so far:
ProfileReader's (ProfileReader is my model that extends users to hold their preferences) _form:
<?php
$primaryCategories = (new Category)->getPrimaryCategories();
//$selectedCategories = yii\helpers\ArrayHelper::map($model->categories, 'id', 'name');
foreach ($primaryCategories as $pc) {
echo '<p>'.$pc->name.'</p>';
if ($pc->subCategories) {
//the following never fully worked. It doesn't automatically check the boxes for relations that
//are already setup. You need to somehow use $model->categories[#] and 'id' for that to work
//echo $form->field($model->categories[#], 'id')->label(false)
echo $form->field($pc, 'subCategories[' . $pc->id . '][]')->label(false)
->checkboxList(yii\helpers\ArrayHelper::map($pc->subCategories, 'id', 'name'),
['separator' => '<p>']);
}
}
?>
ProfileReaderController:
public function actionUpdate()
{
$model = $this->findModel(\Yii::$app->user->identity->id);
if ($model == null) {
$model = new ProfileReader();
$model->user_id = \Yii::$app->user->identity->id;
}
if ($model->load(Yii::$app->request->post()) && $model->save()) {
//link the categories to the pen name
$categories = Yii::$app->request->post()['Category']['subCategories'];
$model->unlinkAll('categories', true);
foreach ($categories as $category) {
if ($category)
foreach ($category as $c) {
$c = (new Category)->findOne($c);
$model->link('categories', $c);
}
}
return $this->redirect(['update']);
} else {
return $this->render('update', [
'model' => $model,
]);
}
}
ProfileReader:
public function getCategories()
{
return $this->hasMany(Category::className(), ['id' => 'category_id'])
->viaTable('user_category', ['user_id' => 'user_id']);
}
Does anyone have any clue how I can make this work? Is it even possible in Yii2 with activeform?
Okay, after many hours I finally figured it out. Posting my resulting code here so that it may help someone else. Don't ask me to explain it as I don't fully get it myself :P
It might also be a good idea to do some testing on it too before throwing it into a live environment, I haven't done any yet.
update action:
/**
* Updates an existing ProfileReader model.
* If update is successful, the browser will be redirected to the 'view' page.
* #param integer $id
* #return mixed
*/
public function actionUpdate()
{
$model = $this->findModel(\Yii::$app->user->identity->id);
if ($model == null) {
$model = new ProfileReader();
$model->user_id = \Yii::$app->user->identity->id;
}
if ($model->load(Yii::$app->request->post()) && $model->save()) {
//unlink the categories first to avoid duplicates
$model->unlinkAll('categories', true);
//link the categories to the pen name
foreach ($model->categoriesArray as $pc) {
if ($pc) {
foreach ($pc as $sc) {
$sc = (new Category)->findOne($sc);
$model->link('categories', $sc);
}
}
}
return $this->redirect(['update']);
} else {
//get the categories and separate them into groups based on parent_id
foreach ($model->categories as $c) {
$model->categoriesArray[$c->parent_id][] = $c;
}
return $this->render('update', [
'model' => $model,
]);
}
}
ProfileReader model (had to add a variable):
public $categoriesArray;
_form:
<label class="control-label">Categories</label>
<?php
$allCategories = (new Category)->getOrderedCategories();
foreach ($allCategories as $pc) {
echo '<p>'.$pc['name'].'</p>';
echo $form->field($model, 'categoriesArray['.$pc['id'].'][]')->label(false)
->checkboxList(yii\helpers\ArrayHelper::map($pc['subCategories'], 'id', 'name'),
['separator' => '<p>']);
}
?>
I am using MySQL as the database connection adapter for all my models. I have a downloads model and controller with an index function that renders either an HTML table or a CSV file depending on the type passed from the request. I also have a CSV media type to handle an array of data, which is working as expected (outputs array keys as headers then array values for each row of data).
I wish to do the same find query but then remove ID fields from the record set if a CSV file is going to be rendered. You'll notice that the download ID is being fetched even though it is not in the fields array, so simply changing the fields array based on the request type will not work.
I have tried the following in the index action of my downloads controller:
<?php
namespace app\controllers;
use app\models\Downloads;
class DownloadsController extends \lithium\action\Controller {
public function index() {
// Dynamic conditions
$conditions = array(...);
$downloads = Downloads::find('all', array(
'fields' => array('user_id', 'Surveys.name'),
'conditions' => $conditions,
'with' => 'Surveys',
'order' => array('created' => 'desc')
));
if ($this->request->params['type'] == 'csv') {
$downloads->each(function ($download) {
// THIS DOES NOT WORK
unset($download->id, $download->user_id);
// I HAVE TRIED THIS HERE AND THE ID FIELDS STILL EXIST
// var_dump($download->data());
// exit;
return $download;
});
return $this->render(array('csv' => $downloads->to('array')));
}
return compact('downloads');
}
}
?>
I thought there was an __unset() magic method on the entity object that would be called when you call the standard PHP unset() function on an entity's field.
It would be great if there was a $recordSet->removeField('field') function, but I can not find one.
Any help would be greatly appreciated.
Perhaps you should do $downloads = $downloads->to('array');, iterate the array with a for loop, remove those fields from each row, then return that array. If you have to do this same thing for a lot of actions, you could setup a custom Media handler that could alter the data without needing logic for it in your controller.
Take a look at this example in the Lithium Media class unit test.
You can also avoid having much logic for it in your controller at all through the use of a custom handler. This example also auto-generates a header row from the keys in your data.
In config/bootstrap/media.php:
Media::type('csv', 'application/csv', array(
'encode' => function($data, $handler, $response) {
$request = $handler['request'];
$privateKeys = null;
if ($request->privateKeys) {
$privateKeys = array_fill_keys($request->privateKeys, true);
}
// assuming your csv data is the first key in
// the template data and the first row keys names
// can be used as headers
$data = current($data);
$row = (array) current($data);
if ($privateKeys) {
$row = array_diff_key($row, $privateKeys);
}
$headers = array_keys($row);
ob_start();
$out = fopen('php://output', 'w');
fputcsv($out, $headers);
foreach ($data as $record) {
if (!is_array($record)) {
$record = (array) $record;
}
if ($privateKeys) {
$record = array_diff_key($record, $privateKeys);
}
fputcsv($out, $record);
}
fclose($out);
return ob_get_clean();
}
));
Your controller:
<?php
namespace app\controllers;
use app\models\Downloads;
class DownloadsController extends \lithium\action\Controller {
public function index() {
$this->request->privateKeys = array('id', 'user_id');
// Dynamic conditions
$conditions = array(...);
$downloads = Downloads::find('all', array(
'fields' => array('user_id', 'Surveys.name'),
'conditions' => $conditions,
'with' => 'Surveys',
'order' => array('created' => 'desc')
));
return compact('downloads');
}
}
?>
Why not then just dynamically set your $fields array?
public function index() {
$type = $this->request->params['type'];
//Exclude `user_id` if request type is CSV
$fields = $type == 'csv' ? array('Surveys.name') : array('user_id', 'Surveys.name');
$conditions = array(...);
$with = array('Surveys');
$order = array('created' => 'desc');
$downloads = Downloads::find('all', compact('conditions', 'fields', 'with', 'order'));
//Return different render type if CSV
return $type == 'csv' ? $this->render(array('csv' => $downloads->data())) : compact('downloads');
}
You can see in this example how I send the array for your CSV handler, otherwise it's the $downloads RecordSet object that goes to the view.