Assume this schema:
-
category(id, name)
-
article(id, categoryId, writerId, title, content)
-
writer(id, name, age, location)
I want to be able to get all articles written by a specific writer if i am starting at the category level. That is category > writer > articles, the articles should be only those belonging to the category.
Category Model:
class Category extends ActiveRecord
{
...
public function getArticles()
{
return $this->hasMany(Article::className(), ['categoryId' => 'id']);
}
public function getWriters()
{
return $this->hasMany(Writer::className(), ['id' => 'writerId'])->via('articles');
}
}
Writer Model:
class Writer extends ActiveRecord
{
...
public function getArticles()
{
return $this->hasMany(Article::className(), ['writerId' => 'id']);
}
public function getCategories()
{
return $this->hasMany(Category::className(), ['id' => 'categoryId'])->via('articles');
}
}
Article Model:
class Article extends ActiveRecord
{
...
public function getCategory()
{
return $this->hasOne(Category::className(), ['id' => 'categoryId']);
}
public function getWriter()
{
return $this->hasOne(Writer::className(), ['id' => 'writerId']);
}
}
If i do the following:
$category = Category::find()->with(['writers'])->where(['id' => 1])->one();
var_dump($category->writers[0]->articles);
All articles that writers[0] will be returned regardless the category. How do i make it return only for the category.id = 1.