I have problem,when I tried to update except row of null in CakePHP.
Model -> Spot
column -> name,address
[MySQL]
id / name / address
1 / Shibuya Bakery / Shibuya street 123
For example,there is database like the one above.
Then CakePHP got a name-value(Shibuya Cake Shop) from Android,and address-value is null.
Therefore I wanna update just name-column.
id = 1(post from Android)
public function update()
{
if( isset($this->request->data["id"]) )
{
$id = intval($this->request->data["id"]);
$fields = array( 'Spot.id' => $id );
$data = array( 'Spot.name' => "'".$this->request->data["name"]."'",
"Spot.address" => "'".$this->request->data["address"]."'");
$this->Spot->updateAll( $data,$fields );
}
}
If you just want to update just one field, just use saveField.
$this->Spot->id = $this->request->data['id'];
$this->Spot->saveField('name', $this->request->data['name']);
Don't use updateAll, as that is meant for updating multiple records, though technically you could add conditions to prevent it from doing so. You're also passing incorrect arguments into updateAll. (See http://book.cakephp.org/2.0/en/models/saving-your-data.html#model-updateall-array-fields-mixed-conditions for the correct way.) If you want to update multiple fields at once on a single record, use save:
public function update()
{
if( isset($this->request->data["id"]) )
{
$fields = array('name');
if(!empty($this->request->data['address'])) array_push($fields, 'address');
$this->Spot->save($this->request->data, true, $fields);
}
}
Read more on saving: http://book.cakephp.org/2.0/en/models/saving-your-data.html#saving-your-data
Related
I'm going to check if a row exists in my DB which one of its field matches a custom value.
e.g. consider table licences which contains fields: (id,serial,validity).
I'm going to check two conditions in my controller:
licence with serial 'xyz' is presents in db
licence with serial 'xyz' have validity field value 'valid'
How should i complete $option for this code:
public function validity($serial = null) {
$this->autoRender = false; // We don't render a view in this example
$options = ?????;
$license = $this->License->find('first', $options);
if ($license){
// it is valid and present
$data = array('validity' => 'valid');
);
}else{
//not present actions
$data = array('validity' => 'invalid');
}
$this->response->body(json_encode($data));
}
The options argument has a lot of parameters you can use like conditions, order and fields. In your case you need conditions
$options=array('conditions'=>array('License.serial'=>'xyz', 'License.validity'='valid'));
(by default it is AND between conditions)
So I need to validate if both fields are the same, not each field on its own. By that I mean:
id (auto increment) | field_1 | field_2
------------------------------------------
1 | 1 | 1
if I try to insert null,1,1 it will show error. But if I go null,1,2 it inserts it with no problem.
In conclusion, the whole (field_1, field_2) is what's is unique (also know as compound primary key).
how can I validate this in Model?
EDIT: I tried this: Validation rule for a composite unique index (non-primary), but it validates each field on it's own, so if I go null,1,2 it won't insert, cause field_1 = 1 already exists in the table
Model::isUnique() is a rule that can be used and is already implemented in the CakePHP core.
Returns false if any fields passed match any (by default, all if $or =
false) of their matching values.
isUnique(array('field1', 'field2'), false));
Notice the false, if the 2nd arg is not set to false it won't work like you want it because it's using OR instead of AND then.
Try this custom validation function on Model.
public function compositUniqueKey($data){
if(isset($this->data[$this->alias]['field1']) && isset($this->data[$this->alias]['field1']) ){
$check = $this->find('first', array(
'conditions' => array(
'field1' => $this->data[$this->alias]['field1'],
'field2' => $this->data[$this->alias]['field2']
)
)
);
if(!empty($check)){
return false;
}
return true;
}else{
return false;
}
}
OK, this is the situation. In my beforeSave function I want to manipulate some $this->request->data entries.
This is my component:
<?php
App::uses('Component', 'Controller');
class GetStationComponent extends Component {
public function getStationId ($station) {
$stationInstance = ClassRegistry::init('Station');
$conditions = array('OR' => array(
array('Station.code LIKE' => $station),
array('Station.naam LIKE' => $station),
array('Station.naam_overig LIKE' => $station)
));
$result = $stationInstance->find('list', array('conditions'=>$conditions));
$value = array_values($result);
$value = $value[0];
return $value;
}
}
?>
And this is my beforeSave function in my Controller:
public function beforeSave($options = array()) {
if (!empty($this->request->data['Experience']['vertrekstation']) && !empty($this->request->data['Experience']['aankomststation'])) {
$this->request->data['Experience']['vertrekstation'] = $this->GetStation->getStationId($this->request->data['Experience']['vertrekstation']);
$this->request->data['Experience']['aankomststation'] = $this->GetStation->getStationId($this->request->data['Experience']['aankomststation']);
}
return true;
}
It should return an ID of the stations name. But in the Database the name itself is stored (which is filled in by the user) instead of the ID. What do I need to change in my Component (I guess...) to return the right values?
(P.S. The query itself in the component returns an ID, because at first I'd put the 'beforeSave' directly into my function which saves the data, but then my validation error said that it wasn't a right value. Which is correct...)
To complement the other answers; to get just the value of a single field, use Model::field()
return $stationInstance->field('id', $conditions);
It is best to add a sort order to this statement to make sure that the results will always be returned in the same order:
return $stationInstance->field('id', $conditions, 'code ASC');
Since you only perform a single query on the Model, and don't do anything afterwards, you don't even need the intermediate $stationInstance variable. Your code can be further simplified to:
return ClassRegistry::init('Station')->field('id', $conditions, 'code ASC');
Some observations
Because of the 'fuzzy' matching on the name of the station, the first result may not always be the station intended by the user it's best to offer an 'autocomplete' functionality in your front-end and have the user pick the correct station (e.g. To prevent picking Den Haag when the user meant Den Haag HS)
If the station does not fully matches a station, you should present a warning that the station wasn't found
You didn't surround your search-terms with % for the LIKE queries. If you intend to search for 'name "contains", you should use '%' . $station . '%'. For "starts with" use $station . '%'
As #mark suggested; beforeSave() is a callback of the Model and should be located there.
Also; beforeSave() is triggered after validation has taken place, so it will probably be too late. beforeValidate() is the best callback for this
If the Experience model is already attached to the Station model, you don't need to use a component, because you can directly access the Station model. It's best to put the search-method inside the Station model;
Moving it all to the right(*) location
*) Other options are always possible, this is just a possible approach
Add the 'search' method to the Station-model;
app/Model/Station.php
public function getStationIdByName($name)
{
$name = trim($name);
if (empty($name)) {
return null;
}
$name = '%' . $name . '%';
$conditions = array(
'OR' => array(
array($this->alias . '.code LIKE' => $name),
array($this->alias . '.naam LIKE' => $name),
array($this->alias . '.naam_overig LIKE' => $name),
)
);
return $this->field('id', $conditions, 'code ASC');
}
..and use it in the Experience Model
app/Model/Experience.php
public function beforeValidate(array $options = array())
{
if (
!empty($this->data[$this->alias]['vertrekstation'])
&& !empty($this->data[$this->alias]['aankomststation'])
) {
// Directly access the Station-model from within the Experience Model
$this->data[$this->alias]['vertrekstation']
= $this->Station->getStationIdByName($this->data[$this->alias]['vertrekstation']);
$this->data[$this->alias]['aankomststation']
= $this->Station->getStationIdByName($this->data[$this->alias]['aankomststation']);
}
// Call parent-callback after setting the values
return parent::beforeValidate($options);
}
[UPDATE] Using the Conventions, prevent unwanted behavior
After writing the previous example, I noticed there are some flaws in your current setup;
If vertrekstation and aankomststation should hold the 'foreign key' of the station (the station-id) they are not named according to the CakePHP Model and Database Conventions
Because of 1) By putting this code inside the beforeValidate(), it will also be triggered when updating an existing record. Because you're using the aankomststation and vertrekstation field both to hold the name of the station (inside the Form) and the id (inside the database), the Model will attempt to look-up the station-id via the id when updating. NOTE that inside the form you'll still be using vertrekstation and aankomstation as field-name. These field names are not present in your database, and therefore will not be able to directly update data inside your database, that's where the beforeValidate() callback is used for
Because the Experience model needs two relations to the Station model (once as departure station ('vertrekstation'), once for arrival station ('aankomststation')), you will need an alias for the Station-model. See: Multiple relations to the same model
app/Model/Experience.php
class Experience extends AppModel {
/**
* Station will be associated to the 'Experience' Model TWICE
* For clarity, using an 'alias' for both associations
*
* The associated Models will be accessible via;
* $this->DepartureStation
* $this->ArrivalStation
*
* To stick to the CakePHP conventions, name the foreign keys
* accordingly
*/
public $belongsTo = array(
'DepartureStation' => array(
'className' => 'Station',
'foreignKey' => 'departure_station_id',
),
'ArrivalStation' => array(
'className' => 'Station',
'foreignKey' => 'arrival_station_id',
)
);
public function beforeValidate(array $options = array())
{
// vertrekstation and aankomststation hold the 'names' of the
// stations and will only be present if the form has been submitted
if (
!empty($this->data[$this->alias]['vertrekstation'])
&& !empty($this->data[$this->alias]['aankomststation'])
) {
// Directly access the Station-model from within the Experience Model
// using the *aliases*
$this->data[$this->alias]['departure_station_id']
= $this->DepartureStation->getStationIdByName($this->data[$this->alias]['vertrekstation']);
$this->data[$this->alias]['arrival_station_id']
= $this->ArrivalStation->getStationIdByName($this->data[$this->alias]['aankomststation']);
// Invalidate the vertrekstation and aankomststation fields if lookup failed
if (empty($this->data[$this->alias]['departure_station_id'])) {
// Unable to find a station. Mark the Form-field invalid
$this->invalidate('vertrekstation', __('A station with this name was not found'));
}
if (empty($this->data[$this->alias]['arrival_station_id'])) {
// Unable to find a station. Mark the Form-field invalid
$this->invalidate('aankomststation', __('A station with this name was not found'));
}
}
// Call parent-callback after setting the values
return parent::beforeValidate($options);
}
}
The find('list') option of Cake returns an array like
array( 1 => 'name1',
3 => 'name2',
//etc...
)
where the index is the id and the value is the display field you set on the model.
So, when you do $value = array_values($result);, you're extracting the values of the array (meaning, the display fields). I'm assuming you're not using the id as the displayField, so that's why it's returning the names and not the id.
I'm not sure why you're using find('list') instead of find('first') or other alternative, but if you don't want to modify that for whatever reason, the fix that should return the first id obtained by the search is
reset($result); //possibly not needed, but just in case
$value = key($result );
First you must understand how Cake works
There is no $this->request in your models. Its part of the controller.
In your model your passed data will be in $this->data directly.
public function beforeSave($options = array()) {
parent::beforeSave($options); // you also forgot the parent call
if (!empty($this->data[$this->alias]['vertrekstation']) && ...)) {
$this->data[$this->alias]['vertrekstation'] = ...;
}
return true;
}
Your find call also looks pretty screwed up. I dont know what you want to do.
But I strongly advice you to use debug() etc to find out what is returned and correct your code accordingly.
You probably need find(first) if you are only interesting in a single value.
I am trying to update a row in the database but haven't found a way to do this in the CakePHP way (unless I query the row to retrieve and update).
UPDATE mytable (field) VALUES (field+1) WHERE id = 1
In CodeIgniter, it would have been as simple as:
$this->db->set('field', 'field+1', FALSE);
$this->db->where('id', 1);
$this->db->update('mytable');
How do I do this without querying the row first, retrieve the value, then updating the row with the information I got?
I don't think CakePHP has a similar method for doing this in a normal save() on a single row.
But the updateAll() method, which updates multiple rows, does support SQL snippets like so:
$this->Widget->updateAll(
array('Widget.numberfield' => 'Widget.numberfield + 1'),
array('Widget.id' => 1)
);
The first param is an array of fields/values to be updated, and the second param are the conditions for which rows to update.
Apart from that I think the only thing is to use:
$this->Widget->query('YOUR SQL QUERY HERE');
Which lets you query with raw SQL. [EDIT: but this is not recommended as it bypasses the ORM.]
Try this
<?php
class WidgetsController extends AppController {
public function someFunction( $id = null ){
if( $id ){
// read all fields from the model
// alternately you can $this->Widget->read( array( 'field' ), $id );
$this->Widget->read( null, $id );
// grab the 'field' field so we don't have to type out the data array
$field = $this->Widget->data[ 'Widget' ][ 'field' ];
// where field is the name of the field to be incremented
$this->Widget->set( 'field', $field + 1 );
$this->Widget->save( );
}
// someday cake devs will learn to spell referrer
$this->redirect( $this->referer( ));
}
}
?>
Basically you are passing the id, if it exists you read the Widget model (see the notes above, null as 1st param read the entire table) and then you are using Model::set to st the field to a value one greater than itself - remember to cast to int if you store the field as a char/varchar - and then save the model.
I have a CakePHP model - User - that has ties to an external corporate system. I store some data on those systems and other data locally. In my User::beforeSave() method, I'm trying to set an ID, send the data (with that custom ID) to my corporate systems and then, if it inserts successfully there, return true so that Cake will insert the new user record with that same ID so that I can link them later.
I can't find a way to make this happen. Is there a way to insert a CakePHP record with a user-specified primary key value? I'm using UUIDs so there's (effectively) no opportunity for overlap.
$this->data['User']['id'] = String::uuid()
try {
$user_proxy = new CoreServicesUserProxy();
$corp_user = $user_proxy->CreateUser (
array (
'user' => array (
'UserName' => 'myusername',
'EmailAddress' => $this->data['User']['email'],
'SecurityId' => $this->data['User']['id']
)
)
);
}
catch ( Exception $e ) {
// error handling stuff
return false;
}
I realise you have already been given some hints, but here is some code which might help.
Why not add an external_user_id field to your users table?
<?php
class User extends AppModel {
function beforeSave() {
$ds = ConnectionManager::getDataSource('core_services');
$externalUser = $ds->createUser($this->data);
if (!$externalUser) {
return false;
}
$this->data['User']['external_id'] = $externalUser['id'];
return true;
}
function afterFind($results, $primary) {
// handle different types of find here ('all' vs 'first' vs through relation)
foreach ($results as &$result) {
$result = $this->_mergeExternalUser($result);
}
}
function _mergeExternalUser($user) {
$ds = ConnectionManager::getDataSource('core_services');
$externalUser = $ds->retrieveUser($result['external_id']);
return am($externalUser, $user);
}
}
?>
There is a way - but typically you would add another column to the Users table instead and let CakePHP do it's thing with the primary key. See this Bakery article to know how it's done. Since it is more than a year later, this is for reference mostly. As far as I understand it, this should function well with CakePHP 1.2 as well.