In my database there is a content table and when fetching data from this table I would like to append field url to the results, which is based on slug field which is contained in the table. Anyway, I have seen a way to do this in the previous versions of cakephp using behavior for the model of this table and then modifying results in afterFind callback in the behavior class. But in version 3 there is no afterFind callback, and they recommend using mapReduce() method instead in the manual, but this method is poorly explained in the manual and I cant figure out how to achieve this using mapReduce().
After little bit of research I realized that the best way to append the url field field to find results is using formatResults method, So this is what I did in my finders:
$query->formatResults(function (\Cake\Datasource\ResultSetInterface $results) {
return $results->map(function ($row) {
$row['url'] = array(
'controller' => 'content',
'action' => 'view',
$row['slug'],
$row['content_type']['alias']
);
return $row;
});
});
Related
I'm creating a project on CakePHP 3.x where I'm quite new. I'm having trouble with the hasMany related tables to get the name of my entities instead of their ids.
I'm coming from CakePHP 2.x where I used an App::import('controller', array('Users') but in the view to retrieve all data to display instead of the ids, which is said to be a bad practice. And I wouldn't like to have any code violation in my new code. Can anybody help me? here is the code :
public function view($id = null)
{
$this->loadModel('Users');
$relatedUser = $this->Users->find()
->select(['Users.id', 'Users.email'])
->where(['Users.id'=>$id]);
$program = $this->Programs->get($id, [
'contain' => ['Users', 'ProgramSteps', 'Workshops']
]);
$this->set(compact('program', 'users'));
$this->set('_serialize', ['ast', 'relatedUser']);
}
I expect to get the user's email in the relatedUsers of the program table but the actual output is:
Notice (8): Trying to get property 'user_email' of non-object [APP/Template\Asts\view.ctp, line 601].
Really need help
Thank you in advance.
You've asked it to serialize the relatedUser variable, but that's for JSON and XML views. You haven't actually set the relatedUser variable for the view:
$this->set(compact('program', 'users', 'relatedUser'));
Also, you're setting the $users variable here, but it's never been initialized.
In addition to #Greg's answers, the variable $relateduser is still a query object, meaning that trying to access the email property will fail. The query still needs to be executed first.
You can change the query to:
$relatedUser = $this->Users->find()
->select(['Users.id', 'Users.email'])
->where(['Users.id' => $id])
->first();
Now the query is executed and the only the first entry is returned.
There is are a number of ways to get a query to execute, a lot of them are implicit is use. See:
Cookbook > Retrieving Data & Results Sets
I am having a hard time trying to figure out how to get a sub-query working.
Imagine I have:
$schools
->select($this->Schools)
->select([
'pupilcount' => $this->Pupils
->find()
->select([
$this->Pupils->find()->func()->count('*')
])
->where([
'Pupils.school_id' => 'Schools.id',
]),
The problem I am experiencing (I think) is that Schools.id is always 0 and so the count is returned as 0. I can pull out the Pupils join and it shows Pupils there.
I tried changing my code to add a:
->select(['SCID' => 'Schools.id'])
and reference that in the sub-query but doesn't work, it will always return 0 for the pupilcount.
What am I doing wrong here?
Whenever encountering query problems, check what queries are actually being generated (for example using DebugKit). Unless being an expression object, the right hand side of a condition will always be bound as a parameter, ie you're comparing against a string literal:
Pupils.school_id = 'Schools.id'
Generally for proper auto quoting compatibility, column names should be identifier expressions. While the left hand side will automatically be handled properly, the right hand side would require to be handled manually.
In your specific case you could easily utilize QueryExpression::equalFields(), which is ment for exactly what you're trying to do, comparing fields/columns:
->where(function (\Cake\Database\Expression\QueryExpression $exp, \Cake\ORM\Query $query) {
return $exp->equalFields('Pupils.school_id', 'Schools.id');
})
It's also possible to create identifier expressions manually by simply instantiating them:
->where([
'Pupils.school_id' => new \Cake\Database\Expression\IdentifierExpression('Schools.id')
])
or as of CakePHP 3.6 via the Query::identifier() method:
->where([
'Pupils.school_id' => $query->identifier('Schools.id')
])
And finally you could also always pass a single string value, which is basically inserted into the query as raw SQL, however in that case the identifiers will not be subject to automatic identifier quoting:
->where([
'Pupils.school_id = Schools.id'
])
See also
Cookbook > Database Access & ORM > Query Builder > Advanced Conditions
API > \Cake\Database\Expression\QueryExpression::equalFields()
API > \Cake\Database\Expression\IdentifierExpression
I am using Cakephp 3.x and i want to update my single field for multiple ids. Something like this..
UPDATE mytable SET `status` = '1' WHERE ID IN (1,2,3)
Currently i am using query to perform this action using cakpehp
$this->Leaveregisters->query()
->update()
->set(['leaveregister_status' => $this->request->data('status')])
->where(['leaveregister_id IN ('.$this->request->data('final_ids_string').')'])
->execute();
Well this does the trick for me but i want this to be performed using cakephp 3.xs' ORM method .. so i am trying to use this instead
$table->updateAll(['field' => $newValue], ['id' => $entityId]);
But this code is for single id only which i do not want.. i also do not want to use foeach loop to perform the same action. Instead i want an ID to be passed via array or comma seperated in any case and want to perform the same action.
Is there any way i can perform the same thing using ORM method using cakephp 3.x
Thanks
usinga updateAll or a query() objects to do a bulk update is the same thing as you can read in the manual at the end of this paragraph
so you can do
$this->Leaveregisters->query()
->update()
->set(['leaveregister_status' => $this->request->data('status')])
->where(['leaveregister_id IN' => [1,2,3])
->execute();
or
$this->Leaveregisters->updateAll(
['leaveregister_status' => $this->request->data('status')]
['leaveregister_id IN' => [1,2,3]);
remember then when usin IN clause you have to pass an array. Read this part of the manual on how to create IN clause
You have to use array datatype for pass in IN CLAUSE
$in_condition= explode(",",$this->request->data('final_ids_string'));
$this->Leaveregisters->query()
->update()
->set(['leaveregister_status' => $this->request->data('status')])
->where(['leaveregister_id IN' => $in_condition])
->execute();
With updateAll() of Model
$table->updateAll(array(
// new values
),
array('id' => array(1,2,3,4,5,6))
);
I'm new to cakephp. I'm trying to search through mysql tables. I want to use nested query.
class TableController extends AppController{
.
.
public function show(){
$this->set('discouns', $this->DiscounsController->query("SELECT * FROM discoun as Discoun WHERE gcil_id = 1"));//(SELECT id FROM gcils WHERE genre = 'Shoes' AND company_name = 'Adidas')"));
}
}
Error:
Error: Call to a member function query() on a non-object
I've also tried
public function show(){
$this->DiscounsController->query("SELECT * FROM count as Count WHERE ctr_id = (SELECT id FROM ctrs WHERE genre = 'Shoes' AND company_name = 'Adidas')");
}
Error:
Error: Call to a member function query() on a non-object
File: C:\xampp\htdocs\cakephppro\myapp\Controller\CountsController.php
Please help. I've been trying this for last few hours. :/
As mentioned in the comments there are a few problems with your code.
Firstly, you are trying to call the query() method on a Controller, whereas you should be executing it on a Model, as it is models that handle database queries and the controller should simply be used to call these methods to get the data and pass them to the view.
The second thing is that you are executing a very simple SQL query raw instead of using CakePHPs built in functions <- Be sure to read this page in full.
Now for your problem, as long as you have setup your model relationships correctly and followed the correct naming conventions, this should be your code to run your SQL query from that controller:
public function show(){
$this->set('discouns', $this->Discouns->find('all', array(
'conditions' => array(
'gcil_id' => 1,
'genre' => 'shoes',
'company_name' => 'Adidas'
)
));
}
query() is not a Controller, but a Model method. That's what the error (Call to a member function on a non-object) is trying to tell you.
So the correct call would be:
$this->Discount->query()
But you are calling this in a TableController, so unless Table and Discount have some type of relationship, you won't be able to call query().
If the Table does have a relationship defined you will be able to call:
$this->Table->Discount->query()
Please not that query() is only used when performing complex SQL queries in scenarios where the standard methods (find, save, delete, etc.) are less practical.
$this->Counts->find('all',array(
'conditions' => array(
'ctrs.genre' => 'Shoes',
'ctrs.company_name' => 'Adidas'
), 'recursive' => 1
));
The above is with tables named counts and ctrs.
This is assuming you have the model set up to have some sort of relationship between the counts table and the ctrs table. It's kind of hard to tell in your code exactly what you tables are.
The CakePHP book should have all the answers you need. One of the reasons to run CakePHP over regular PHP is the FIND statement. Once you have your models set up correctly, using the find statement should be really easy.
http://book.cakephp.org/2.0/en/models.html
The validation on Kohana ORM is done using rules
function rules()
{
return array(
'username' => array(
array('not_empty'),
array(array($this, 'availability')),
)
);
}
I'm struggling to validate a JSON encoded column using $_serialize_columns.
class Model_Admin extends ORM {
protected $_belongs_to = array();
protected $_has_many = array(
'plans' => array(),
'groups' => array(),
'transactions' => array(),
'logins' => array()
);
protected $_serialize_columns = array('data');
/**
* #param array $data
* #param Validation $validation
*
* #return bool
*/
public function data($data, $validation)
{
return
Validation::factory(json_decode($data, TRUE))
// ... rules ...
->check();
}
public function rules()
{
return array(
'data' => array(
array(array($this, 'data'), array(':value',':validation')
)
);
}
}
the array that gets encoded is:
array(
'name' => '',
'address' => '',
'phone' => '',
'postalcode' => ''
);
the data method receives the json encoded data, because the ORM runs the filters before doing the validation, so I need to convert it back to an associative array, then create a new validation object to check specifically for the content of that array. Because I can't merge Validation rules from another Validation instance
Updated Answer
The use of a second validation object is necessary since save() causes the internal model validation object to be checked. This means that rules added to the validation object being checked from a validation rule will be ignored (Validation->check() imports the rules into local scope before looping).
Since the data itself is technically another object (in the sense of object relationships, it has its own dataset that needs validation) the ideal solution would be to find a way to create a real model that saves the data.
There are numerous other benefits to saving data with proper database column definitions, not least if you need to perform data property lookups, make in-situ changes etc. (which would otherwise require unserializing the data column, potetnailly in all rows).
There are some alternatives, but they feel like kludges to me:
Create a model that represents the data object and add rules to it, using check() to validate the data (problem: will require a lot of maintenance, no real-world table means columns must be manually defined).
Set the data as real columns in the Admin model, and use a filter that will convert it into the data column on set (problem: again, must manually define the columns and exclude the additional columns from the save operation).
I hope this is of some use.
Original Answer
The Kohana ORM save() method permits the inclusion of an "extra" validation object, which is merged into the main ORM validation object namespace.
This is documented briefly here.
If I have understood correctly, I think you are looking to do something like this:
// another script, e.g., a controller
// Create the model
$admin = ORM::factory('Admin');
// $data = the data as an array, before serialization ...
$extra_validation = Validation::factory($data)
// add ->rule() calls here, but DO NOT chain ->check()
;
// Set $data in the model if it is going to be saved, e.g., $admin->data = $data;
// Set other data... e.g., $admin->foo = 'bar';
// Save the model
try {
$admin->save($extra_validation);
}
catch (ORM_Validation_Exception $e)
{
// Manipulate the exception result
}
While in this example you must still create another validation object, you are now able to catch all exceptions in a single block. I would recommend using var_dump() or similar on $e->errors() to check the namespace if you are using i18n messages to provide a human-readable error message. You should find that a namespace called "_external" has been created in the response.