I need tour's fields but below code just get tourPackage's fields and I have to use Active Record.
I know I have to use property in another model for fix this problem but I don't want use property because there are a lot of fields or property.
How can I get tour's table data ?
$models = TourPackage::find()->select(['tour.*'])->leftJoin('tour', 'tour.id=tour_package.tour_id')->all();
Your using TourPackage object ,
so you can't get attributes of Tour model.
If you want to get Tour model attributes,please try asArray()
ex.
$models = TourPackage::find()->select(['tour.*'])->leftJoin('tour', 'tour.id=tour_package.tour_id')->asArray()->all();
Now you will get Tour model attributes.
In TourPackage you need to define public attributes, that you will join from Tour.
For instance if you have column number in tour, then you can write:
class TourPackage extends \yii\db\ActiveRecord
{
public $number
// ..and other properties you take from tour
in TourPackage class, and add the following select in Query:
$models = TourPackage::find()->addSelect(['tour_package.*', 'tour.number AS number'])->leftJoin('tour', 'tour.id=tour_package.tour_id')->all();
Of course, you can write addSelect(['tour_package.*', 'tour.*']), but in that case tour columns with similar name will override tour_package columns.
Related
I have 2 tables in the db (mysql), and between the 2 there is no classic relationship through keys or ids. The only way I could define relationship would be through attribute values. E.g. table wheel and car and certain wheels would match certain cars because of the size only. Can it be defined on DB level, and/or in yii2, and if yes, how?
In the relations I can add an onCondition(), but you have to define an attribute (???), too:
public function getWheels() {
return $this->hasMany(\app\models\Wheel::className(), ['???' => '???'])->onCondition(['<', 'wheelsize', $this->wheelsize]);
}
I could use a fake attribute and set it in all records like to 1, but it seems a little bit odd for me.
I find nothing on the web regarding this or maybe I'm just searching the wrong way, or maybe I'm trying something that's totally bad practice. Can you please point me to the right direction?
Hypothetically you can set an empty array as a link, but for security reasons (I think) the condition "0 = 1" is automatically added in the select.
I faced your own problem several times and the best solution I could find was to use ActiveQuery explicitly (similar to what happens for hasOne and hasMany):
public function getWheels() {
return new ActiveQuery(\app\models\Wheel::className(), [
'where' => 'my condition' // <--- inserte here your condition as string or array
'multiple' => true // true=hasMany, false=hasOne
// you can also add other configuration params (select, on condition, order by, ...
]);
}
This way you can get both the array and the ActiveQuery to add other conditions:
var_dump($model->wheels); // array of wheels objects
var_dump($model->getWheels()); // yii\db\ActiveQuery object
$model->getWheels()->andWhere(...); // customize active query
I don't think that you could achieve this through relation.
But there is a way to work around the limitation.
<?php
namespace app\models;
class Car extend \yii\db\ActiveRecord
{
/**
* #var \app\models\Wheel
*/
private $_wheels;
/**
* #return \app\models\Wheel[]
*/
public function getWheels()
{
if (!$this->_wheels) {
$this->_wheels = Wheel::find()
->where(['<', 'wheelsize', $this->wheelsize])
//->andWhere() customize your where here
->all();
}
return $this->_wheels;
}
}
Then you could access the wheels attribute just as relation does.
<?php
$car = Car::find(1);
$car->wheels;
Beware that this way does not support Eager Loading
Sometimes we use MySql Views to organize related tables to make it easier to search and sort. For example if you have Posts with a Status, and a Source.
Post
subject
body
source_id
status_id
Status
id
label
other_field
Source
id
label
other_field
View
create view read_only_posts as
SELECT statuses.label as status, sources.label as source, posts.*
from posts
left join statuses on statuses.id = posts.status_id
left join sources on sources.id = posts.source_id
Then we have the Post model and an extra model:
// Post.php
class Post extends Model
{
//
}
// ReadOnlyPost.php
class ReadOnlyPost extends Post
{
protected $table = 'read_only_posts';
}
This is nice because now you can directly sort or filter on Status or Source as a string not the id's. You can also include the 'other_field'.
But we have a problem that I need help with. If you have a polymorphic many-to-many relationship on Posts, I can't get it to work on the read only version. For example if you have polymorphic tags:
// Post.php Model
public function tags()
{
return $this->morphToMany(Tag::class, 'taggable');
}
The problem is when you filter a post (using the read only model) with a specific tag you get sql like this:
select count(*) as aggregate from read_only_posts where exists (select * from tags inner join taggables on tags.id = taggables.taggable_id where read_only_posts.id = taggables.taggable_type and taggables.taggable_type = 'read_only_posts' and label = 'test')
As you can see the problem is the taggables.taggable_type = 'read_only_posts'.
I can't find a way to override the morph type for a model. (I am on laravel 5.4 and the MorphClass isn't there anymore). The morph map is an associative array so you can't do this:
// AppServiceProvider
public function boot()
{
Relation::morphMap([
'posts' => Post::class,
'posts' => ReadOnlyPost::class, <--- Can't do this
My stupid fix is when I attach a tag to a post I also attach it to ready_only_posts, which is kind of a mess.
Anyone else uses Views for read only models? Anyone have a better way to overriding the many to many polymorphic type for a specific model?
Looking at the code, I believe this might work.
class ReadOnlyPost extends Posts
{
public function getMorphClass() {
return 'posts';
}
}
In theory you should need to have the Posts model/table listed in the morph map, since the system will auto generate the type of "posts" for it based on naming.
I'm creating an online tool for companies that each have a set of users in Laravel.
When a user is connected, he has a $connected_company_id variable
For every SELECT request (called by ::all(), find(), ...), i would like to add the condition: where company_id = $connected_company_id. I have found this post: laravel set an automatic where clause, but it doesn't work by overriding newQuery().
For every INSERT request, i would like to add the company_id.
Is this possible without changing my code inside all the controllers ?
I thought about extending Eloquent with customEloquent, and then make my models extend customEloquent, but I don't know how to write the code for customEloquent and if it could work.
Well, you could make use of the Eloquent Model Events. I assume you have the connected_company_id stored in the Session company_id
class BaseModel extends Eloquent{
public static function boot(){
parent::boot();
//Column to inject when inserting
static::creating(function ($obj){
$obj->company_id = Session::get('company_id');
});
//Column to inject when updating
static::updating(function ($obj){
$obj->company_id = Session::get('company_id');
});
}
}
You can extend the BaseModel class on all the models that you want the company_id to be inserted or updated. Take a look at Eloquent Model Events for more information.
The above code will automatically insert or update the company_id to the model that you extend the BaseModel to. When you do a Model::all() or Model::get(), you automatically get the company_id on that Model and you can also perform searches as you requested on Point `
Hope this helps.
well, you can just add the company id to the find query.
Model::where("company_id","=",$company_id):
Or you can create a scope:
class theModel extends Eloquent {
static $company_id;
static for_company($company_id){
self::company_id=$company_id;
return __CLASS__;
}
public function scopeCompany($query)
{
return $query->where('company_id', '=', self::company_id);
}
}
//And later
$scope=theModel::for_company($company_id);
$res=$scope::company->where(...);
Disclaimer: I haven't tried this. Just a solution I constructed. Let me know if this works. This will not work under PHP 5.3
Table.linkedIndex is related to LinkedIndex.ID. The value of the field LinkedIndex.TableName is either Linked1 or Linked2 and defines which of these tables is related to a row in Table.
Now i want to make a dynamical link with Yii models so that i can easily get from a Table row to the corresponding Linked1 or Linked2 row:
Table.linkedID = [LinkedIndex.TableName].ID
Example
Table values:
LinkedIndex values:
Now I should get the row from Linked2 where ID=2:
$model = Table::model()->findByPk(0);
$row = $model->linked;
Model
In the model Table, I tried to make the relation to the table with the name of the value of linkedIndex.TableName:
public function relations()
{
return array(
'linkedIndex' => array(self::HAS_ONE, 'LinkedIndex', array('ID' => 'linkedIndex')),
'linked' => array(
self::HAS_ONE,
'linkedIndex.TableName',
array('ID' => 'linkedID'),
)
)
}
But then I get the error:
include(linkedIndex.TableName.php) [function.include]: failed to open stream: No such file or directory
Is there any way to make a dynamic relation Table.linkedID -> [LinkedIndex.TableName].ID with Yii Models?
Per the Yii docs here:
http://www.yiiframework.com/doc/api/1.1/CActiveRecord#relations-detail
I'd suggest using self::HAS_ONE instead (unless there can be multiple rows in LinkedIndex with the same ID - although from the looks of above, I doubt that's the case).
You can link tables together that have different keys by following the schema:
foreign_key => primary_key
In case you need to specify custom PK->FK association you can define it as array('fk'=>'pk'). For composite keys it will be array('fk_c1'=>'pk_с1','fk_c2'=>'pk_c2').
so in your case:
public function relations(){
return array(
'linkedIndex' => array(self::HAS_ONE, 'LinkedIndex', array('ID' => 'linkedIndex')),
);
}
where LinkedIndex is the class name for the LinkedIndex model (relative to your Table model - i.e. same folder. You could change that, of course) and array('ID' => 'linkedIndex') specifies the relationship as LinkedIndex.ID = Table.linkedIndex.
Edit
Looking at your updated example, I think you're misunderstanding how the relations function works. You're getting the error
include(linkedIndex.TableName.php) [function.include]: failed to open stream: No such file or directory
because you're trying to create another relation here:
'linked' => array(
self::BELONGS_TO,
'linkedIndex.TableName',
array('ID' => 'linkedID'),
)
This part: linkedIndex.TableName refers to a new model class linkedIndex.TableName, so Yii attempts to load that class' file linkedIndex.TableName.php and throws an error since it doesn't exist.
I think what you're looking for is to be able to access the value TableName within the table LinkedIndex, correct? If so, that's accessible from within the Table model via:
$this->linkedIndex->TableName
This is made possible by the relation we set up above. $this refers to the Table model, linkedIndex refers to the LinkedIndex relation we made above, and TableName is an attribute of that LinkedIndex model.
Edit 2
Per your comments, it looks like you're trying to make a more complex relationship. I'll be honest that this isn't really the way you should be using linking tables (ideally you should have a linking table between two tables, not a linking table that says which 3rd table to link to) but I'll try and answer your question as best as possible within Yii.
Ideally, this relationship should be made from within the LinkedIndex model, since that's where the relationship lies.
Since you're using the table name as the linking factor, you'll need to create a way to dynamically pass in the table you want to use after the record is found.
You can use the LinkedIndex model's afterFind function to create the secondary link after the model is created within Yii, and instantiate the new linked model there.
Something like this for your LinkedIndex model:
class LinkedIndex extends CActiveRecord{
public $linked;
public static function model($className = __CLASS__){
return parent::model($className);
}
public function tableName(){
return 'LinkedIndex';
}
public function afterFind(){
$this->linked = new Linked($this->TableName);
parent::afterFind();
}
//...etc.
}
The afterFind instantiates a new Linked model, and passes in the table name to use. That allows us to do something like this from within the Linked model:
class Linked extends CActiveRecord{
private $table_name;
public function __construct($table_name){
$this->table_name = $table_name;
}
public static function model($className = __CLASS__){
return parent::model($className);
}
public function tableName(){
return $this->table_name;
}
//...etc.
}
which is how we dynamically create a class with interchangeable table names. Of course, this fails of the classes need to have separate operations done per-method, but you could check what the table_name is and act accordingly (that's pretty janky, but would work).
All of this would result in being to access a property of the linked table via (from within the Table model):
$this->linkedIndex->linked->foo;
Because the value of LinkedIndex.TableName and Table.linkedID is needed to get the values, I moved the afterFind, suggested by M Sost, directly into the Table-Class and changed its content accordingly. No more need for a virtual model.
class Table extends CActiveRecord {
public $linked; // Needs to be public, to be accessible
// ...etc.
public function afterFind() {
$model = new $this->linkedIndex->TableName;
$this->linked = $model::model()->findByPk( $this->linkedID );
parent::afterFind();
}
// ...
}
Now I get the row from Linked2 where ID=2:
$model = Table::model()->findByPk(0);
$row = $model->linked;
I was wondering how to work with kohana orm and inheritances.
Supose I have a model called Vehicle
$_table_columns with 5 columns
The lets supose I create another model called Car and I want to add 5 more columns to the model. How should I modify the parent $_table_columns variable or should I override it?
Thanks
I suppose you're looking for something like this protected $_table_columns = parent::_table_columns + array(...);. Unfortunatly PHP won't allow for this, so you will have to either override $_table_columns and list all 10 columns or override ORM reload_columns method like this:
public function reload_columns($force = FALSE)
{
$this->_table_columns = parent::_table_columns + array(...);
parent::reload_columns($force);
}