I have this database structure:
I need the user to get only those reservations in ReservationsSeachModel that are in the warehouse belonging to the user. Model user_has_warehouse has a function getUserHasWarehouse($user_id, $warehouse_id) to check for relations. I am able to get the relations when viewing single, deleting and updating records in controllers. But I cannot make the SearchModel to return reservations that belong to current user.
I cannot depend on Reservation->user_id, because that value is not mandatory and reservations can be inserted publicly with no user_id. How to make the SearchModel work properly so it only shows reservations belonging to the warehouse where user has the warehouse?
ReservationsSearchModel:
$warehouse_id = User_Has_Warehouse::find()->select(['warehouse_id'])->where(['user_id' => Yii::$app->user->id]);
$freezer_type_id = Freezer_type::find()->select(['id'])->where(['warehouse_id' => $warehouse_id]);
$reservation_id = Reservation_freezer_type::find()->select(['reservation_id'])->where(['freezer_type_id'=>$freezer_type_id]);
...
$query->andFilterWhere([
'id' => $reservation_id,
'customer_id' => $this->customer_id,
'user_id' => $this->user_id,
]);
...
But the following did not work for me. What am I doing wrong?
Managed to solve it.
$h = User_Has_Warehouse::find()->select(['warehouse_id'])->where(['user_id' => Yii::$app->user->id]);
$rt = Freezer_type::find()->select(['id'])->where(['warehouse_id' => $h]);
$res = Reservation_freezer_type::find()->select(['reservation_id'])->where(['freezer_type_id' => $rt]);
// grid filtering conditions
$query->andFilterWhere(['id' => $res]);
Related
I am fairly new to CakePHP, and am working on an event calendar. The events can be single day events or multiple days, so I created an events table and a dates table. When I save an event, the dates are saved in the Dates table as expected BUT the event_id field is always saved as 0 instead of the actual event id.
I think the relationships between the Events and Dates table is set properly.
This is what I have for the DatesTable:
$this->table('dates');
$this->displayField('id');
$this->primaryKey('id');
$this->addBehavior('Timestamp');
$this->belongsTo('Events', [
'foreignKey' => 'event_id'
]);
This is my EventsTable:
$this->table('events');
$this->primaryKey('id');
$this->addBehavior('Timestamp');
$this->belongsTo('Dates', [
'foreignKey' => 'event_id',
'joinType' => 'INNER'
]);
This is the code in my EventsController (WetKit is one of our plugins):
$event = $this->Events->newEntity();
if ($this->request->is('post')) {
$event = $this->Events->patchEntity($event, $this->request->data, [
'associated' => 'dates'
]);
if ($this->Events->save($event)) {
$this->Flash->success(__('The form has been saved.'));
} else
$this->WetKit->flashError(__('The form could not be saved because error(s) were found.'), $event);
}
How can I get the event id to save in the Dates table?
The association on the EventsTable side is wrong, it should be either a hasMany (1:n) association, or a hasOne (1:1) association. Given that you're talking about multiple days, I'd assume that you're looking for the former.
See also
Cookbook > Database Access & ORM > Associations - Linking Tables Together
I have a model named Application. And Application is associated to has_many model named Location.
Application has many Location
In my Application query:
$this->Application->find('all', array('conditions' => 'Application.status' => 'accepted'));
I'm finding applications where status is accepted.
Next thing that I would like to achieve is to find Application records where associated Location is empty/null or in other words where count of Location records is 0.
I tried to make join query like this:
$join_query = array(
'table' => 'locations',
'alias' => 'Location',
'type' => 'INNER',
'conditions' => array(
'Location.application_id = Application.id',
'OR' => array(
array('Location.id' => NULL)
)
)
);
But seems like it's just querying Application records that do have associated Location records.
Thanks in advanced if you guys have any idea(s).
You need to use a left join, not an inner join. Inner join will get only those results that have a row in both of the tables you are joining, where you want only results where there is only a row in the left table. Left joins will get all the results in the left table, regardless if there's a row associated with it in the right table. Then add a condition after the join is complete, to only select those joined results where Location.id is null.
$this->Application->find('all',
array(
'conditions' => array('Location.id' => null),
'joins' => array(
array(
'table' => 'locations',
'alias' => 'Location',
'type' => 'LEFT',
'conditions' => array('Location.application_id = Application.id')
),
),
)
);
Your query says "find any application and its location with application_id = id, AND (1 OR where location.id = null)", so that will match any application that has location.
What I'd do is to leave joins and just use containable and counts. With plain sql I'd use a left join and count the Locations, like in this example. But cake doesn't behave well with not named columns, like "COUNT(*) AS num_locations", so I tend to avoid that.
I'd transform your query to a containtable one
$apps = this->Application->find('all', array('contains'=>'Location'));
foreach($apps as $app) {
if (count($app['Location']) <= 0)
//delete record
}
You could also implement a counterCache, and keep in a BD column the number of locations per application, so the query can be a simple find like
$this->Application->find('all', array('conditions'=>array('location_count'=>0)));
Ooooor, you could add a virtual field with "SUM(*) as num_locations" and then use your join with "left outter join" and compare "num_locations = 0" on the conditions.
Those are the options that comes to mind. Personally I'd use the first one if the query will be a one time/not very used one. Probably put it in the Application model like
public function findAppsWithNoLocations() {
$apps = this->Application->find('all', array('contains'=>'Location'));
foreach($apps as $app) {
if (count($app['Location']) <= 0)
//delete record
}
}
But the other two options would be better if the sum of locations per app is going to be a recurrent query you'll search for.
EDIT
And of course Kai's answer options that does what you want xD. This tendency to complicate things will be the end of me... Well, will leave the answer here to show a reference to other convoluted options (specifically counterCache if you'll need to count the relations a lot of times).
i know this is already some time ago.
i could manage it this way:
public function getEmpty($assoc) {
foreach($this->find('all') as $c){
if(empty($c[$assoc])) $return[] = $c;
}
return $return;
}
now i got all entries that have an empty associated data.
in my controller i call the function like this:
$ce = $this->Company->getEmpty('CompaniesUsers');
companies Users is the Empty Associated model i want to check.
In a cakePHP application I am building, a profile can have multiple locations; the tables are called "profiles" and "locations" and in the model classes I have defined a HasMany relationship. Now I want the user to be able to search profiles based on their locations. After reading some questions here and the CakePHP Cookbook, I have decided I need to use SQL joins (in reality more tables are involved, and the result of a search should be based on conditions concerning different tables).
I have written the following function inside my Profile model:
public function findProfiles($long, $lat){
$options['joins'] = array(
array('table' => 'locations',
'alias' => 'Location',
'type' => 'Inner',
'conditions' => array('Location.profile_id = Profile.id'))
);
$options['order'] = array('Location.lng ASC'); //this is just as trial
return $this->find('all',$options);
}
The code works, but I get a copy of a profile for each location it possesses. That is, if a profile possesses 5 positions, I get five instances of that profile (each instance containing all five positions!)
How can I achieve this?
[edit]
eg. let's assume I only have one profile, with two positions. I get:
result[0][Profile]
[Position][0]
[1]
[1][Profile]
[Position][0]
[1]
Where the data in result[0] and result[1] is identical.
The problem happens because of the type of join used. With inner join you'll get this return with your query
profile_id location_id
---------------------------
1 2
1 3
And cake understands that as two records of Profile, so you get repeated Profiles with the same info.
If this were all the extent of your problem, I'd say "go with Containable behaviour and forget joins", but since you said there are more tables involved, maybe the type of join can't be changed. So to get the unique Profile without repetitions, you'll have to GROUP BY the query to get
profile_id location_id
---------------------------
1 2 & 3
with a code similar to this
$options['joins'] = array(
array('table' => 'locations',
'alias' => 'Location',
'type' => 'Inner',
'conditions' => array('Location.profile_id = Profile.id')),
'group' => 'Profile.id'
);
and you'll get rid of repetitions. For future problems like this, is best to first check the actual query that gets send to the DB, check yourself if the result that the DB gives you is what you want, and if not, see what you can do in cake to change it.
CAKEPHP question
I am querying my HABTM table successfully and returning the id of every student with the given group_id. This is my code for this.
$students = $this->GroupsStudents->find('list', array('conditions' => array('group_id' => $id)));
It works, no problem. I need to somehow use this info (namely the student's id), which is stored in $students, to query my students table and extract student's names based on their id.
If someone could give me some insight on this, that would be greatly appreciated.
if i'm understanding you right. as you can see from this if you have the id you can easily get the students name even though i'm not sure why you would do this and not just foreach the name.
foreach ($students as $id => $name) {
echo $students[$id]; // produces name
}
In Student model define relation with GroupStudent model as shown below:
var $hasMany = array(
'GroupStudent' => array(
'className' => 'GroupStudent',
'foreignKey' => 'student_id'
)
);
Then your write your query as
$students = $this->Student->find('all',
array(
'conditions' => array('GroupStudent.group_id' => $id)
'fields'=>array('Student.name','Student.id','GroupStudent.group_id'))
);
Note: Make sure your controller has $uses=>array('Student','GroupStudent'); defined!
and your are using plural names for model GroupStudents so correct them if possible
I am not very good with DB queries. And with Yii it's more complicated, since I am not very used to it.
I need to optimize a simple query
$userCalendar = UserCalendar::model()->findByAttributes(array('user_id'=>$user->id));
$unplannedEvents = CalendarEvent::model()->findAllByAttributes(array('calendar_id'=> $userCalendar->calendar_id,'planned'=>0));
CalendarEvent table, i.e the second table from which I need records does not have an user_id but a calendar_id from which I could get user_id from UserCalendar, i.e. the first table hence I created a UserCalendar object which is not a very good way as far as I understand.
Q1. What could I do to make it into one.
Q2. Yii does this all internally but I want to know what query it built to try it seperately in MySQL(phpMyAdmin), is there a way to do that?
Thanks.
Q1: You need to have the relation between UserCalendar and CalendarEvent defined in both of your active record models (in the method "relations").
Based on your comments, it seems like you have the Calendar model that has CalendarEvent models and UserCalendar models.
Lets assume your relations in Calendar are:
relations() {
return array(
'userCalendar' => array(self::HAS_MANY, 'UserCalendar', 'calendar_id'),
'calendarEvent' => array(self::HAS_MANY, 'CalendarEvent', 'calendar_id'),
}
In CalendarEvent:
relations() {
return array( 'calendar' => array(self::BELONGS_TO, 'Calendar', 'calendar_id'), );
}
And in UserCalendar:
relations() {
return array( 'calendar' => array(self::BELONGS_TO, 'Calendar', 'calendar_id'), );
}
So to make the link between UserCalendar and CalendarEvent you'll need to use Calendar
$criteria = new CDbCriteria;
$criteria->with = array(
"calendarEvent"=>array('condition'=>'planned = 0'),
"userCalendar"=>array('condition'=> 'user_id =' . $user->id),
);
$calendar = Calendar::model()->find($criteria);
and $calendar->calendarEvent will return an array of calendarEvent belonging to the user
Q2: you can enable web logging so all the db request (and others stuffs) will appear at the end of your page:
Logging in Yii (see CWebLogging)
In your application configuration put
'components'=>array(
......
'log'=>array(
'class'=>'CLogRouter',
'routes'=>array(
array(
'class'=>'CWebLogRoute',
),
),
),
),