I have 2 tables :
ORDERS
------
id
type
LOGS
----
id
order_id
time
I want to query with cakephp so I have :
array(
'Order' => array(
'id' => '38',
'type' => 'online',
),
'Log' => array(
'time' => '2014-09-24 21:17:14'
)
)
The problem is that I want only the last order, not all orders with all logs.
I did something like this :
$ordersList = $this->Order->find('all', array(
'fields' => array(
'Order.*',
'Log.time'
),
'joins' => array(
array(
'table' => 'logs',
'alias' => 'Log',
'type' => 'right',
'conditions' => array(
'Log.order_id = Order.id'
),
)
),
);
To have only the last one, you can order the result by log.time and then take only the first record (with the param 'first' or just by fetching the first record of the recordset).
For example :
$order = $this->Order->find('first', array(
'order' => array('Log.time' => 'desc')
));
in your case :
$ordersList = $this->Order->find('first', array(
'fields' => array(
'Order.*',
'Log.time'
),
'joins' => array(
array(
'table' => 'logs',
'alias' => 'Log',
'type' => 'right',
'conditions' => array(
'Log.order_id = Order.id'
),
'order' => array('Log.time' => 'desc')
)
),
);
As information, if you want to have a simple method to join the models, take a look at the containable behavior. With this behavior, the link are setted in the model then you only have to declare which associated model you want to retrieve with your current model.
=> http://book.cakephp.org/2.0/en/core-libraries/behaviors/containable.html
Related
I am using cakephp2 and trying to join two tables like this :
$employee=$this -> Employee ->find ('all',array(
'joins'=>array(
array('table' => 'employee_histories', 'alias' => 'eh', 'type' => 'LEFT', 'foreignKey' => false,
'conditions' => array('eh.emp_id= Employee.emp_id'))
),
'fields'=>'Employee.*,eh.*',
));
In EmployeeHistory model there is an association with table employee_designations like this :
public $belongsTo = array(
'EmployeeDesignation' => array(
'className' => 'EmployeeDesignation',
'foreignKey' => '',
'conditions' => 'EmployeeDesignation.designation_id=EmployeeHistory.designation_id',
'fields' => '',
'order' => ''
),
);
Now is it possible to get the EmployeeDesignation result in $employee array.
You can join the employee_designations table by adding another array to your joins array. Something like this:
$employee= $this->Employee->find('all', array(
'joins'=>array(
array(
'table' => 'employee_histories',
'alias' => 'eh',
'type' => 'LEFT',
'foreignKey' => false,
'conditions' => array(
'eh.emp_id= Employee.emp_id'
)
),
// array joining the employee designations table
array(
'table' => 'employee_designations',
'alias' => 'ed',
'type' => 'LEFT',
'conditions' => array(
'eh.designation_id = ed.designation_id'
)
)
),
'fields'=>'Employee.*, eh.*, ed.*', // include ed fields
));
User has many User_Questionaries. I want paginate users that have particular questionnaire. I used following pagination for it.
$paginate = array(
'conditions' => array(
'User.role' => IWOA,
'UserQuestionary.questionary_id' => $id
),
'recursive' => 1,
'limit' => 10,
'order' => array(
'name' => 'asc'
),
'contain' => array('UserQuestionary')
);
But it is not create join query. It is showing Unknown column UserQuestionary.questionary_id' in 'where clause'
What is the issue? How can i do it?
Finally I used join query for do this.
$paginate = array(
'conditions' => array(
'Iwoa.role' => IWOA,
),
'joins' => array(
array(
'alias' => 'UserQuestionary',
'table' => 'user_questionaries',
'type' => 'LEFT',
'conditions' => 'UserQuestionary.user_id = Iwoa.id AND UserQuestionary.questionary_id = ' . $id
)
),
'limit' => 10,
'order' => array(
'name' => 'asc'
),
);
I have the following code that gives an error from the moment I do a find condition on the associated Model (HABTM):
class Users extends Model{
public $useTable = 'users';
public $hasAndBelongsToMany = array(
'UserCategories' => array(
'className' => 'UserCategories',
'joinTable' => 'user_categories_link',
'foreignKey' => 'user_id',
'associationForeignKey' => 'category_id',
'unique' => false,
)
);
public function getData($page = 0, $category = '', $subcategory = ''){
return $this->find('all', array(
'limit' => 6,
'page' => $page,
'conditions'=> array(
'active'=> 1,
'UserCategories.category_name' => $category, // THIS GIVES ERROR
'UserCategories.category_subcategory' => $subcategory, // THIS GIVES ERROR
)
));
}
In my Controller:
$this->Users->getData(0, 'somemaincategory', 'somesubcategory');
I can't seem to do conditions on the related HABTM-Model (UserCategories in this case). I also tried to use 'contain' (with $actsAs), but then he stills gives me all the User data even if there is no Category linked with it. The Category array is in that case just blank.
Hope someone can help me.
Thanks in advance,
Aäron
Do a manual join. You can use this to do an actual inner join (contain will act as a left join). http://book.cakephp.org/2.0/en/models/associations-linking-models-together.html#joining-tables
$this->find('all',
array(
'conditions' => array(
'active' => 1,
),
'joins' => array(
array(
'table' => 'user_categories_link',
'alias' => 'UserCategoriesLink',
'type' => 'inner',
'conditions' => array(
'UserCategoriesLink.user_id = User.id'
),
),
array(
'table' => 'user_categories',
'alias' => 'UserCategories',
'type' => 'inner',
'conditions' => array(
'UserCategories.id = UserCategoriesLink.category_id',
'UserCategories.category_name' => $category,
'UserCategories.category_subcategory' => $subcategory,
),
)
),
)
);
I have a HABTM relationship and I'd like to get nested data for a categories table from a product table something like this product array:
array(
(int) 0 => array(
'id' => (int) 1,
'name' => 'a',
'categories' => array(
(int) 0 => array(
'id' => (int) 1
),
(int) 1 => array(
'id' => (int) 2
)
)
),
(int) 1 => array(
'id' => (int) 2,
'name' => 'b',
'categories' => array(
(int) 0 => array(
'id' => (int) 1
)
)
)
)
Is this possible with cake?
EDIT: I will try to explain further what I want to do.
Please bear with me, I am new to cake and am having trouble getting to grips it.
I have a 'product' table:
public $hasAndBelongsToMany = array(
'Category' => array(
'className' => 'Category',
'joinTable' => 'categories_sculptures',
'foreignKey' => 'sculpture_id',
'associationForeignKey' => 'category_id',
'unique' => 'keepExisting'
)
)
and a category table:
public $hasAndBelongsToMany = array(
'Sculpture' => array(
'className' => 'Sculpture',
'joinTable' => 'categories_sculptures',
'foreignKey' => 'category_id',
'associationForeignKey' => 'sculpture_id',
'unique' => 'keepExisting'
)
);
and a category products table:
public $belongsTo = array(
'Category' => array(
'className' => 'Category',
'foreignKey' => 'category_id',
'conditions' => '',
'fields' => '',
'order' => ''
),
'Sculpture' => array(
'className' => 'Sculpture',
'foreignKey' => 'sculpture_id',
'conditions' => '',
'fields' => '',
'order' => ''
)
);
I would like to build a view table of the sculptures and also show in each row which categories each sculpture is in (which could be more than one). As I am new to cake I don't know how I would go about this. If I was just querying mysql I could get this information with a group_concat or a nested select, or inefficiently by looping through first array and querying the category_sculpture table by sculpture key and adding the results to the first array. But I would like to know the best way to get this result the cake way.
I have found the answer to my needs:
$this->Sculpture->recursive = 1;
I have the following tables: binders, docs, users, docs_users. Doc belongsTo Binder, Doc hasAndBelongsToMany User.
I want to get binders and their associated docs for the user that is currently logged in (the associated user_id in the docs_users table).
I have tried Containable and find('all') with joins, conditions, etc. but I can't figure out how to remove the Docs that are from Users who are not associated in the docs_users table.
This code does NOT work:
$binders = $this->Binder->find(
'all',
array(
'joins' => array(
array(
'table' => 'binders_users',
'alias' => 'BindersUser',
'type' => 'inner',
'foreignKey' => false,
'conditions'=> array(
'BindersUser.binder_id = Binder.id',
'BindersUser.user_id = ' . $this->Auth->user('id')
)
),
array(
'table' => 'docs',
'alias' => 'Doc',
'type' => 'left',
'foreignKey' => false,
'conditions'=> array(
'Doc.binder_id = Binder.id',
)
),
array(
'table' => 'docs_users',
'alias' => 'DocsUser',
'type' => 'left',
'foreignKey' => false,
'conditions'=> array(
'DocsUser.doc_id = Doc.id',
'DocsUser.user_id = ' . $this->Auth->user('id')
)
)
),
'recursive'=>0
)
);
$this->set('binders', $binders);
And neither does this:
$this->Binder->recursive = 2;
$this->Binder->Behaviors->attach('Containable');
$this->Binder->contain(array(
'Branch',
'Doc' => array(
'User' => array(
'DocsUser' => array(
'conditions' => array('id = "17"')
)
)
)
));
$binders = $this->Binder->find('all');
Any help from you seasoned pros would be great! Thanks!
Alternative/Simplified Solutions?
This works if I just want to get binders to which users have permissions. Short and sweet. However, it will still send ALL associated docs through, which is NOT the behavior I want. It needs to only pass on the docs to which the user has permissions (as described previously).
$binders = $this->Binder->find(
'all',
array(
'joins' => array(
array(
'table' => 'binders_users',
'alias' => 'BindersUser',
'type' => 'inner',
'foreignKey' => false,
'conditions'=> array(
'BindersUser.binder_id = Binder.id',
'BindersUser.user_id = ' . $this->Auth->user('id')
)
)
)
)
);
These are a few of the options available for doing deep finds on data in CakePHP:
https://github.com/Terr/linkable/wiki
http://mark-story.com/posts/view/using-bindmodel-to-get-to-deep-relations
http://bakery.cakephp.org/articles/view/quick-tip-doing-ad-hoc-joins-in-model-find
Here's the final solution I came up with based on all of the great feedback I got. I think this is an elegant solution that can be reused in any scenario where deep associations are required.
In the binder_controller I unbound the Doc model, and bound it back using the finderQuery to select only the Docs that a user has permission to see. Then in joined the binders_users table selecting only the binders that users have permissions to.
Thank you everyone for all your help!
$this->Binder->unbindModel(array('hasMany' => array('Doc')));
$this->Binder->bindModel(
array('hasMany' => array(
'Doc' => array(
'className' => 'Doc',
'foreignKey' => 'binder_id',
'dependent' => false,
'finderQuery' => 'SELECT Doc.* FROM docs AS Doc INNER JOIN docs_users AS DocsUser ON DocsUser.doc_id = Doc.id AND DocsUser.user_id = ' . $this->Auth->user('id')
)
)
)
);
$binders = $this->Binder->find(
'all',
array(
'joins' => array(
array(
'table' => 'binders_users',
'alias' => 'BindersUser',
'type' => 'inner',
'foreignKey' => false,
'conditions'=> array(
'BindersUser.binder_id = Binder.id',
'BindersUser.user_id = ' . $this->Auth->user('id')
)
)
)
)
);
More on binding/unbinding models
On this line, you need to tell Cake which Model's id you are talking about:
'conditions' => array('id = "17"')
e.g. DocsUser.id
...and you don't use recursive with containable. Get rid of it.
Have you tried coming in from a user perspective?
$this->Binder->Doc->User->Behaviors->attach('Containable');
$this->Binder->Doc->User->contain(array('Doc'=>'Binder'));
$user = $this->Binder->Doc->User->find('all',array('conditions'=>'User.id'=>$user_id));
The 'DocsUser' association should be detected anyway.
From a Binders perspective maybe
In your Binders MODEL add ( please check table, key and model names in case I made a typo )
function getBindersByUserSql($user_id)
{
$dbo = $this->getDataSource();
$subQuery = $dbo->buildStatement(
array(
'fields' => array('DISTINCT(Doc.binder_id)'),
'table' => "docs_users",
'joins' => array(
array('table' => 'users',
'alias' => 'User',
'type' => 'INNER',
'conditions' => array('DocsUser.user_id = User.id')
),
array('table' => 'docs',
'alias' => 'Doc',
'type' => 'INNER',
'conditions' => array('Doc.id = DocsUser.doc_id')
)
),
'alias'=>"DocsUser",
'conditions' => array("User.id"=>$user_id),
'order' => null,
'group' => "Doc.binder_id"
),
$this
);
return $dbo->expression($subQuery);
}
Then in your binders CONTROLLER try
$this->Binder->Behaviors->attach('Containable');
$this->Binder->contain(array('Doc'));
$conditions = array();
$conditions = $this->Binder->getBindersByUserSql($this->Auth->user('id'));
$binders = $this->Binder->find('all',array('conditions'=>$conditions)));
Any good?