let me explain my problem, hope you get an idea of what it is.
I have a web service which hide from public access, and have designed a secure way of mysql sql querying using to the service across the websites. so i dont think i can really use the current model layer of Yii2, and that also means i hardly can use activeDataProvider as no database present.
Currently what i do is to write raw sqls and get all the results and then feed into dataprovider using ArrayDataProvider.
e.g.
$sql="select * from a_table";
$result=$remote->select($sql);
$dataProvider = new ArrayDataProvider([
'allModels' => $result,
'sort' => [
'attributes' => ['date', 'name'],
],
'pagination' => [
'pageSize' => 10,
],
]);
return $this->render('index', [
'dataProvider' => $dataProvider,
]);
that pose a problem, everytime i need to query the full table. This is not idea if the table is very large. It is better to query in the size of 10 something, however if i do
$sql="select * from a_table LIMIT 10";
no pagination will appear in my case...How do i solve this problem? And if this is not an idea way to talk to external data services, what is ur suggestion?
The pagination won't appear because you only feed 10 rows to the ArrayDataProvider and it has no way of knowing there is more.
If you want to use DataProvider with remote fetching I would advise you to create your own MyRemoteDataProvider class by extending BaseDataProvider and overriding at least these four methods:
use yii\data\BaseDataProvider;
class MyRemoteDataProvider extends BaseDataProvider
{
protected function prepareModels()
{
}
protected function prepareKeys($models)
{
}
protected function prepareTotalCount()
{
}
protected function sortModels($models, $sort)
{
}
}
.. and then of course use your MyRemoteDataProvider instead of ArrayDataProvider. If you don't know what the methods should return, please read documentation for BaseDataProvider or get inspired by ArrayDataProvider implementation.
I want to use OR operator in $link array in hasMany function in class extended by ActiceRecord.
For example, I want to get transactions which related whith user account. In sql it would be something like SELECT * FROM transactions WHERE fromAccountId = :id OR toAccountId = :id But how I can wrote this using Yii2
public function getTransactions() {
return $this->hasMany(Transaction::className(), [
'fromAccountId' => 'id',
'toAccountId' => 'id'
]);
}
Link ActiveQuery works with the keys of the array as name column, values - as value of column.
The array keys must be columns of the table for this relation, and the array values must be the corresponding columns from the primary table
Because the code doesn't work (where (fromAccountId, toAccountId) IN ('id','id')):
[
'fromAccountId' => 'id',
'toAccountId' => 'id'
]
You can rewrite hasMany behavior in getTransactions()
public function getTransactions() {
$query = Transaction::find();
$query->multiple = true;
return $query->where(['OR',
['fromAccountId' => $this->id],
['toAccountId' => $this->id]
]);
}
It supports native behavior, as expected:
$model->getTransactions() // return as \yii\db\ActiveQuery
$model->transactions // return as array of Transactions models
But doesn't work for $model->find()->with('transactions'), because with require setting $query->link. Instead with need to use join....
You can use the find(), it's not as nice, but do the work:
return $this->find()->join('LEFT JOIN', 'transaction', 'fromAccountId = id OR toAccountId = id')->all();
Maybe you have to use tablename.id!
I have not tried this, but you could try something like
public function getTransactions() {
return $this->hasMany(Transaction::className(), ['1' => '1'])->where('fromAccountId = id OR toAccountId = id');
}
The idea is to create a join without a condition (or with a dummy condition) then use where to get the actual results you want. This might mean a massive performance problem.
I am trying to use Phalcon\Mvc\Model\Query\Builder object together with Phalcon\Mvc\Model::find() method to customize data load behaviour.
All model rows in the table have "record_status" field which is used to mark records active/inactive.
I intend to extend Model::find() and Model::findFirst() methods to always add "record_status=1" constraint to all my Model queries. But for now, I'm just trying to pass Query\Builder object on to ::find() method externally:
class User extends Phalcon\Mvc\Model
{
}
$user = new User();
/**
* #var Phalcon\Mvc\Model\Query\Builder
*/
$query = $user->getModelsManager()->createBuilder();
$query->where('email = :email:', [
'email' => 'root#yahoo.com'
])->andWhere('record_status = :status:', [
'status' => 1
])->from('users');
$found = $user->find($query);
foreach ($found as $foundUser) {
...
}
The problem is that ->find($query) returns ALL rows from the database, ignoring WHERE clauses set to $query.
When inspecting properties of $query & $user I see the following relevant protected properties:
$query::_conditions = '(email = :email:) AND (record_status = :status:)';
$query::_bindParams = array(
'email' => 'root#yahoo.com',
'status' => 1
);
$user::_count = 4; // This is wrong, this corresponds to TOTAL number of rows
$user::_result->_bindParams = NULL; // Bound parameters have disappeared
$user::_result->_sqlStatement = 'SELECT `users`.`id`, `users`.`email`, `users`.`record_status` FROM `users`'; // As you can see, there is no WHERE clause
I'm on Phalcon 1.3.0, PHP 5.5.1.
I expect find() and findFirst() methods to accept Query\Builder() object and fetch the correct records. Is this a bug or am I approaching it incorrectly?
Thanks,
Temuri
Yep you have things wrong.
The Model::find() and Model::findFirst() functions accept arrays, int or string and are wrappers for query builder.
You have at least two options:
a) use query builder directly:
// ... here is your query builder script as in question
$results = $query->getQuery()->execute();
$firstFound = $results->getFirst();
b) pass array to Model::findFirst():
$firstFound = User::findFirst(
array(
'(email = :email:) AND (record_status = :status:)',
'bind' => array('email' => 'root#yahoo.com', 'status' => 1)
)
);
What's the shorthand for inserting a new record or updating if it exists?
<?php
$shopOwner = ShopMeta::where('shopId', '=', $theID)
->where('metadataKey', '=', 2001)->first();
if ($shopOwner == null) {
// Insert new record into database
} else {
// Update the existing record
}
Here's a full example of what "lu cip" was talking about:
$user = User::firstOrNew(array('name' => Input::get('name')));
$user->foo = Input::get('foo');
$user->save();
Below is the updated link of the docs which is on the latest version of Laravel
Docs here: Updated link
2020 Update
As in Laravel >= 5.3, if someone is still curious how to do so in easy way it's possible by using: updateOrCreate().
For example for the asked question you can use something like:
$matchThese = ['shopId'=>$theID,'metadataKey'=>2001];
ShopMeta::updateOrCreate($matchThese,['shopOwner'=>'New One']);
Above code will check the table represented by ShopMeta, which will be most likely shop_metas unless not defined otherwise in the model itself.
And it will try to find entry with
column shopId = $theID
and
column metadateKey = 2001
and if it finds then it will update column shopOwner of found row to New One.
If it finds more than one matching rows then it will update the very first row that means which has lowest primary id.
If not found at all then it will insert a new row with:
shopId = $theID,metadateKey = 2001 and shopOwner = New One
Notice
Check your model for $fillable and make sure that you have every column name defined there which you want to insert or update and rest columns have either default value or its id column auto incremented one.
Otherwise it will throw error when executing above example:
Illuminate\Database\QueryException with message 'SQLSTATE[HY000]: General error: 1364 Field '...' doesn't have a default value (SQL: insert into `...` (`...`,.., `updated_at`, `created_at`) values (...,.., xxxx-xx-xx xx:xx:xx, xxxx-xx-xx xx:xx:xx))'
As there would be some field which will need value while inserting new row and it will not be possible, as either it's not defined in $fillable or it doesn't have a default value.
For more reference please see Laravel Documentation at:
https://laravel.com/docs/5.3/eloquent
One example from there is:
// If there's a flight from Oakland to San Diego, set the price to $99.
// If no matching model exists, create one.
$flight = App\Flight::updateOrCreate(
['departure' => 'Oakland', 'destination' => 'San Diego'],
['price' => 99]
);
which pretty much clears everything.
Query Builder Update
Someone has asked if it is possible using Query Builder in Laravel. Here is reference for Query Builder from Laravel docs.
Query Builder works exactly the same as Eloquent so anything which is true for Eloquent is true for Query Builder as well. So for this specific case, just use the same function with your query builder like so:
$matchThese = array('shopId'=>$theID,'metadataKey'=>2001);
DB::table('shop_metas')::updateOrCreate($matchThese,['shopOwner'=>'New One']);
Of course, don't forget to add DB facade:
use Illuminate\Support\Facades\DB;
OR
use DB;
Updated: Aug 27 2014 - [updateOrCreate Built into core...]
Just in case people are still coming across this... I found out a few weeks after writing this, that this is in fact part of Laravel's Eloquent's core...
Digging into Eloquent’s equivalent method(s). You can see here:
https://github.com/laravel/framework/blob/4.2/src/Illuminate/Database/Eloquent/Model.php#L553
on :570 and :553
/**
* Create or update a record matching the attributes, and fill it with values.
*
* #param array $attributes
* #param array $values
* #return static
*/
public static function updateOrCreate(array $attributes, array $values = array())
{
$instance = static::firstOrNew($attributes);
$instance->fill($values)->save();
return $instance;
}
Old Answer Below
I am wondering if there is any built in L4 functionality for doing this in some way such as:
$row = DB::table('table')->where('id', '=', $id)->first();
// Fancy field => data assignments here
$row->save();
I did create this method a few weeks back...
// Within a Model extends Eloquent
public static function createOrUpdate($formatted_array) {
$row = Model::find($formatted_array['id']);
if ($row === null) {
Model::create($formatted_array);
Session::flash('footer_message', "CREATED");
} else {
$row->update($formatted_array);
Session::flash('footer_message', "EXISITING");
}
$affected_row = Model::find($formatted_array['id']);
return $affected_row;
}
I would love to see an alternative to this if anyone has one to share.
firstOrNew will create record if not exist and updating a row if already exist.
You can also use updateOrCreate here is the full example
$flight = App\Flight::updateOrCreate(
['departure' => 'Oakland', 'destination' => 'San Diego'],
['price' => 99]
);
If there's a flight from Oakland to San Diego, set the price to $99. if not exist create new row
Reference Doc here: (https://laravel.com/docs/5.5/eloquent)
Save function:
$shopOwner->save()
already do what you want...
Laravel code:
// If the model already exists in the database we can just update our record
// that is already in this database using the current IDs in this "where"
// clause to only update this model. Otherwise, we'll just insert them.
if ($this->exists)
{
$saved = $this->performUpdate($query);
}
// If the model is brand new, we'll insert it into our database and set the
// ID attribute on the model to the value of the newly inserted row's ID
// which is typically an auto-increment value managed by the database.
else
{
$saved = $this->performInsert($query);
}
If you need the same functionality using the DB, in Laravel >= 5.5 you can use:
DB::table('table_name')->updateOrInsert($attributes, $values);
or the shorthand version when $attributes and $values are the same:
DB::table('table_name')->updateOrInsert($values);
$shopOwner = ShopMeta::firstOrNew(array('shopId' => $theID,'metadataKey' => 2001));
Then make your changes and save. Note the firstOrNew doesn't do the insert if its not found, if you do need that then its firstOrCreate.
Like the firstOrCreate method, updateOrCreate persists the model, so there's no need to call save()
// If there's a flight from Oakland to San Diego, set the price to $99.
// If no matching model exists, create one.
$flight = App\Flight::updateOrCreate(
['departure' => 'Oakland', 'destination' => 'San Diego'],
['price' => 99]
);
And for your issue
$shopOwner = ShopMeta::updateOrCreate(
['shopId' => $theID, 'metadataKey' => '2001'],
['other field' => 'val' ,'other field' => 'val', ....]
);
One more option if your id isn't autoincrement and you know which one to insert/update:
$object = MyModel::findOrNew($id);
//assign attributes to update...
$object->save();
Actually firstOrCreate would not update in case that the register already exists in the DB.
I improved a bit Erik's solution as I actually needed to update a table that has unique values not only for the column "id"
/**
* If the register exists in the table, it updates it.
* Otherwise it creates it
* #param array $data Data to Insert/Update
* #param array $keys Keys to check for in the table
* #return Object
*/
static function createOrUpdate($data, $keys) {
$record = self::where($keys)->first();
if (is_null($record)) {
return self::create($data);
} else {
return self::where($keys)->update($data);
}
}
Then you'd use it like this:
Model::createOrUpdate(
array(
'id_a' => 1,
'foo' => 'bar'
), array(
'id_a' => 1
)
);
like #JuanchoRamone posted above (thank #Juancho) it's very useful for me, but if your data is array you should modify a little like this:
public static function createOrUpdate($data, $keys) {
$record = self::where($keys)->first();
if (is_null($record)) {
return self::create($data);
} else {
return $record->update($data);
}
}
Isn't this the same as updateOrCreate()?
It is similar but not the same. The updateOrCreate() will only work
for one row at a time which doesn't allow bulk insert.
InsertOnDuplicateKey will work on many rows.
https://github.com/yadakhov/insert-on-duplicate-key
Try more parameters one which will surely find and if available update and not then it will create new
$save_data= Model::firstOrNew(['key1' => $key1value,'key'=>$key2value]);
//your values here
$save_data->save();
UpdateOrCreate method means either update or creates by checking where condition.
It is simple as in the code you can see, in the users table, it will check if an email has the value $user->email then it will update the data (which is in the 2nd param as an array) or it will create a data according to it.
$newUser = User::updateOrCreate(['email' => $user->email],[
'name' => $user->getName(),
'username' => $user->getName().''.$user->getId(),
'email' => $user->getEmail(),
'phone_no' => '',
'country_id' => 0,
'email_verified_at' => Carbon::now()->toDateTimeString(),
'is_email_verified' => 1,
'password'=>Hash::make('Secure123$'),
'avatar' => $user->getAvatar(),
'provider' => 'google',
'provider_id' => $user->getId(),
'access_token' => $user->token,
]);
check if a user exists or not. If not insert
$exist = DB::table('User')->where(['username'=>$username,'password'=>$password])->get();
if(count($exist) >0) {
echo "User already exist";;
}
else {
$data=array('username'=>$username,'password'=>$password);
DB::table('User')->insert($data);
}
Laravel 5.4
I've a custom data provider in my Model
I tryied this in controller
public function actionMonthTotal()
{
$model=new Rapporti();
$this->render('monthTotal',array(
'dataProvider'=>$model->monthTotal(),
));
}
Where monthTotal is the model function that give me a DataProvider
Actually 'monthTotal' is a copy/past of view.php and it uses a clistView using _monthTotal, that is a copy/past of _view.php
I Need to simply get the dataset from dataProvider (a 'SELECT COUNT, SUM, SUM, etc...") and iterate into recordset to echo a simple TABLE into monthTotal view . So ...
how to use a dataProvider from a view to get records and how to iterate trough recors?
My month total is this and is in 'Report' Model
Actually report is in a relation Report N -> 1 Pionierato (sorry for italian terms, but are only object names)
public function totalMonth() {
$criteria = new CDbCriteria();
$criteria->with = array ('pionierato');
$criteria->condition = 'dataBetel=:month';
$criteria->select = "COUNT(t.id) as numProclamatori,
pionierato.tipo as tipoPionierato,
SUM(libri) as sommaLibri,
SUM(opuscoli) as sommaOpuscoli,
SUM(ore) as sommaOre,
SUM(riviste) as sommaRiviste,
SUM(visite) as sommaVisite,
SUM(studi) as sommaStudi";
$criteria->group = "t.dataBetel, t.pionieratoId";
$criteria->params = array ('month' => "2012-09-01");
$dataProvider=new CActiveDataProvider('Rapporti',
array ('criteria' => $criteria)
);
return $dataProvider;
}
I need to use this dataprovider to get the 3 record it will output and print a 3-row table. Static.
Using suggestion from first answer, i got this:
I obtained the result in this way:
<?php
foreach ($dataProvider->getData() as $id => $singleRecord) {
$this->renderPartial('_monthTotal', array('data' => $singleRecord));
}
?>
and removing the clistview widget.
But your answer helped my a lot, so I'll give my preference to you, thanks !
Try:
public function actionMonthTotal()
{
$model = Rapporti::model()->monthTotal();
$this->render('monthTotal',array(
'dataProvider'=>$model,
));
}
That should work, you are creating an object with the name $model which has a value equal to the return value of the method monthTotal() in the Rapporti model
If that doesn't work, check that you are actually getting a result from your monthTotal function by copying it (minus the return part) into your controller instead of calling it from the model.
In your monthTotal view you can iterate through the active records using CListView like so:
<?php $this->widget('zii.widgets.CListView', array(
'dataProvider'=>$dataProvider,
'itemView'=>'_view',
)); ?>
Each iteration calls in a subview called "_view". The data for that record can be accessed using $data (eg: $data->id);
Here is an example of querying without using CActiveDataprovider:
$model = Rapporti::model()->findAll(array(
'condition' => 'dataBetel=:month',
...
));
You can try that... Alternatively you can use findAllBySql() instead of findAll() and type in your query that way. You will then be able to iterate through your data set using a foreach() loop