How to deal with many-to-many yii2?

Question

Yii

Hello.
I can't understand the logic of many-to-many relationships in yii2.
I have 3 tables:

• problems (organ)
  
• problems_organ (ID)
  
• problems_has_organ
  

You need to link problems to problems_organ, through problems_has_organ.
Here are the columns:

Models:

• ProblemsOrgan - all organs
  
• Problems - all problems
  

I do it like this:

public function getOrgans(){
        return $this->hasMany(ProblemsOrgan::className(), ['ID' => 'organ_id'])
                ->viaTable('problems_has_organ', ['organ_id' => 'ID']);
    }

Only 1 organ is returned.
How to make a connection so that everything works fine?
If possible, explain the logic) everywhere only general explanations.
Thanks in advance.

Answer 1

Did it like this:

public function getOrgans(){
        return $this->hasMany(ProblemsOrgan::className(), ['ID' => 'organ_id'])
                ->viaTable('problems_has_organ',['problem_id'=>'ID']);
    }

Works. What other ways are there?

Answer 2

Make three models:
In Problems: $this->hasMany(ProblemsHasOrgan::className(), ['organ_id' => 'ID'])
In ProblemsHasOrgan: $this->hasOne(ProblemsOrgan::className(), ['ID ' => 'problem_id'])
And that's it!

$problems = Problems->find()->with('ProblemsHasOrgan')->all();
foreach($problems->getProblemsHasOrgan->all() as $one)
{
echo $one->problemOrgan->name;
}