I want to set the User model to have a one-to-one relationship with the Student model as well as the Lecture model also.
I'm login in using the user table and from then it will map to the student or lecture table depending on the user type.
The problem is when I run app\user::find('a123')->lecture it will return the b345(Mr Steven) data.
And when I run app\user::find('b345')->student, it returns the a123(david) data.
Both result should have produce NULL because it doesnt matches the id.
New in Laravel thanks.
User table
id | password | type
a123 | 1234 | student
b345 | 1234 | lecture
Lecture table
lecture_id | id | name
b345 | b345 | Mr Steve
Student table
student_id | id | name
a123 | a123 | david
User model
public function student(){
return $this->hasOne(student::class,'student_id');
}
public function lecture(){
return $this->hasOne(lecture::class,'lecture_id');
}
Lecture model
protected $primaryKey = 'lecture_id';
public function User()
{
return $this->belongsTo(User::class,'id');
}
Student model
protected $primaryKey = 'student_id';
public function User()
{
return $this->belongsTo(User::class,'id');
}
Related
I have two tables (users and drinks) with a pivot table, the user has a hasOne relation with profiles table, is there a way to attach the profile table to the pivot table and get all data.
Table user
id | name | email
Table profile
id | user_id | picture
Table drinks
id | name | price
Pivot Table user_drinks
id | user_id | drink_id | quantity | price | status
Drink Model
public function users()
{
return $this->belongsToMany('App\User', 'user_drinks', 'drink_id', 'user_id')->withPivot('price', 'quantity')->withTimestamps();
}
User Model
public function drinks()
{
return $this->belongsToMany('App\Drink', 'user_drinks', 'drink_id', 'user_id')->withPivot('price', 'quantity')->withTimestamps();
}
public function profile() {
return $this->hasOne('App\Profile');
}
PS: I don't wanna write this with raw sql query, it's driving me nuts.
I wouldn't change the tables relation.
I'd use the ->with() function to get the profile information within the existing relations.
So $user->drinks()->where('drink_id', $drink_id)->with('profile')->get(); would be my guess.
I've created 3 tables. User, student and lecture. The user could be a student or a lecture depending on the type on the user table. Student type = "std" while lecture type = "lct". The problem is, when i log in as a lecture, the type value will always be "std" eventhough in the database it is "lct". New in Laravel. Thanks
User table
user_id | password | type
a123 | 1234 | std
b345 | 1234 | lct
Student table
student_id | name
a123 | david
Lecture table
lecture_id | name
b345 | Mr Steve
User model
protected $primaryKey = 'user_id';
public function student(){
return $this->hasOne(student::class,'student_id');
}
public function lecture(){
return $this->hasOne(lecture::class,'lecture_id');
}
Student model (Lecture model also has this but with PK = lecture_id)
protected $primaryKey = 'student_id';
public function User()
{
return $this->belongsTo(User::class,'user_id');
}
HomeController
public function index()
{
$type = Auth::user()->type;
dd($type);
}
Check this. Just assuming
protected $primaryKey = 'user_id';
public function student(){
return $this->hasOne(Student::class,'student_id'); // It should be Student not student I guess (Capital S)
}
public function lecture(){
return $this->hasOne(Lecture::class,'lecture_id'); // Lecture not lecture
}
Check you model class name once.
I have Two Table
1- projects
User with id 5 has created 3 project - which means he will have 3 unique conversation with our different agent
----------------------------------------
|id | user_id | title | time |
|1 | 5 | Example | 2018-06-30 |
|2 | 5 | Example | 2018-06-30 |
|3 | 5 | Example | 2018-06-30 |
----------------------------------------
2- conversation
-------------------------------------------
|id | project_id | user_one | user_two |
|1 | 1 | 5 | 3 |
|2 | 2 | 5 | 7 |
|3 | 3 | 5 | 10 |
-------------------------------------------
Whenever a project is created, a conversation is created with that project id, Now in Laravel i want to get that project detail using Eloquent Relationships.
User_one is the project creator and user_two is our agent assigned to that product.
This is What I've tried
class Chat extends Model {
public function project()
{
return $this->belongsTo('App\ProjectModel');
}
}
class ProjectModel extends Model
{
public $table = 'projects';
}
Here is the controller function
public function Progress($id){ // Id passed here is 2, so it should show detail of project number 2
return \App\Chat::find($id)->project()->get();
}
After all this I'm getting an error - Call to a member function project() on null
You can try like this with creating 2 Models Project and Conversation
table
conversations(id, project_id, creator, agent)
Project Model
public function conversations(){
return $this->hasMany('App\Conversation');
}
Conversation Model
public function project(){
return $this->belongsTo('App\Project', 'project_id');
}
public function creatorUser(){
return $this->belongsTo('App\User', 'creator');
}
public function agentUser(){
return $this->belongsTo('App\User', 'agent');
}
Fetch Data
public function Progress($id){ // Id passed here is 2, so it should show detail of project number 2
$chats = Conversation::with('project', 'creatorUser', 'agentUser')->where('project_id', 2)->get();
foreach($chats as $chat){
dd($chat->project); //it will always print same project because we have filter the conversation by project_id
dd($chat->creatorUser);
dd($chat->agentUser);
}
}
you can create a relation Along with specifying foreign Key and owner key like:
class Chat extends Model {
public function project()
{
return $this->belongsTo(App\ProjectModel::class, 'project_id', 'id');
}
}
and then you will be able to get:
\App\Chat::where('id', $id)->first()->project;
Problem
I created a simple friendship relationship for my Laravel app which all worked ok until I noticed that when I queried the friendship of a user it would only search the current user on the UID1 field.
Since friendships are in essence a two-way relationship, Im trying to find a way in a laravel Model to retrieve ALL friendships relations by multiple columns.
Current Implementation
public function friends()
{
return $this->belongsToMany( App\Modules\Users\Models\User::class ,'friends', 'uid1');
}
Ideal Implementation
public function friends()
{
$a = $this->belongsToMany( App\Modules\Users\Models\User::class ,'users_friends', 'uid1');
$b = $this->belongsToMany( App\Modules\Users\Models\User::class ,'users_friends', 'uid2');
return combine($a,$b);
}
Table Structure
+----------------------+
| users table |
+----------------------+
+----| id: primary UserID |
| | fname: string |
| +----------------------+
|
|
| +----------------------+
| | friends table |
| +----------------------+
| | id: primary iD |
| | |
+----| uid1: user_id |
| | |
+----| uid2: user_id |
+----------------------+
The current implementation will only result in 1 of these records returning if the Current UserID = 1 as per the data in the friends table below.
+-------------------------------+
| friends table (data) |
+--------|---------|------------+
| id | uid1 | uid2 |
+--------|---------|------------+
| 1 | 1 | 7 |
| 2 | 7 | 1 |
| 3 | 9 | 1 |
+-------------------------------+
User Model
<?php
namespace App\Modules\Users\Models;
use Illuminate\Database\Eloquent\Model;
class User extends Model
{
protected $table = 'users';
protected $fillable = [
'username', 'email', 'password', .... .
];
public function friends()
{
return $this->belongsToMany( App\Modules\Users\Models\User::class ,'users_friends', 'uid1');
}
Environment
Server = Homestead/linux
PHP = 7
MySQL
Update
I have a FriendShip helper class I created which does something similar, however in this function I pass in the UserID explicitly
Friendship::where( [
[ 'uid1' ,'=', $uid],
])->orWhere( [
[ 'uid2', '=', $uid]
])->all();
You can add additional conditions when you're declaring relationship by simply chaining it.
<?php
//...
class User extends Model {
//...
public function friends() {
return $this->hasMany(/*...*/)->orWhere('uid2', $this->id);
}
//...
But keep in mind that eloquent is not grouping the first conditions of relation in parenthesis so you might end with SQL that will not work as expected in some cases (if using or, and should be fine)
For example the above might result in a SQL that looks like this
SELECT * FROM users_friends WHERE uid1 = ? AND uid1 IS NOT NULL OR uid2 = ?
Which is a correct SQL statement but without grouping you will not get the result that you're expecting.
Another way is to use accessor and two separate relationships
<?php
//...
public function friends1() {
return $this->belongsToMany(User::class, 'users_friends', 'uid1');
}
public function friends2() {
return $this->belongsToMany(User::class, 'users_friends', 'uid2');
}
public function getFriendsAttribute() {
return $this->friends1->merge($this->friends2);
}
//...
But this way you get two separate trips to DB.
I need to refactor project and I have problem. Below is old, working model, where 'active' column is in "people" table. I need to move 'active' column into "people_translations" table.
Do you have any Idea to modify scopeActive method?
Thanks a lot!
Old working model:
class BaseModel extends Eloquent
{
public function scopeActive($query)
{
return $query->where($this->table . '.active', '=', 1);
}
}
class People extends BaseModel
{
protected $table = 'peoples';
protected $translationModel = 'PeopleTranslation';
}
class PeopleTranslation extends Eloquent
{
public $timestamps = false;
protected $table = 'peoples_translations';
}
Old tables structure:
Table: peoples
id | type | date | active
-------------------------
7 | .... | ... | 1
Table: peoples_translations
id | people_id | language_id | name
-----------------------------------
1 | 7 | 1 | Ann
Old query:
$peoples = \People::active()->get();
New tables structure:
Table: peoples
id | type | date
----------------
7 | .... | ...
Table: peoples_translations
id | people_id | language_id | name | active
--------------------------------------------
1 | 7 | 1 | Ann | 1
Create a relation for translations inside People Model
public function translations()
{
return $this->hasMany('PeopleTranslation', 'people_id');
}
Create active scope in People model
public function scopeActive($query)
{
return $query->whereHas('translations', function($query) {
$query->where('active', 1);
});
}
It will make subquery for this table and as a result it will get where (count of translations with active = 1) > 0.
If you have one-to-one relation - look for hasOne relation method instead of hasMany.