I am using Laravel 4 and eloquent orm to build a movie session database.
Now I have the following Models.
class Location extends \Eloquent
{
public $timestamps = false;
public $table = 'movsys_location';
protected $fillable = array('name', 'desc');
public function sessions(){
return $this->hasMany('Session', 'location_id');
}
}
class Session extends \Eloquent
{
public $timestamps = false;
public $table = 'movsys_session';
protected $fillable = array('time');
public function location(){
return $this->hasOne('Location', 'id');
}
}
(Note: These models are stripped to the necessary code.)
Now in my controller, I have the following.
$Sessions = Session::all();
foreach($Sessions as $Session){
echo (isset($Session->location->name) ? $Session->location->name : 'NO LOCATION');
}
And this is what my database looks like:
Now, everything seems to work, but even though both sessions have the same location, ONLY the first session will return the name of the location! The second echo will return "NO LOCATION".
Any idea or help as to why would be appreciated. If this answer isnt clear enough let me know.
Try this one in place of yours:
class Session extends \Eloquent
{
public $timestamps = false;
public $table = 'movsys_session';
protected $fillable = array('time');
public function location(){
return $this->belongsTo('Location');
}
}
Related
Updated
User model
class User extends Authenticatable
{
use HasFactory, Notifiable, HasApiTokens, HasRoles;
const MALE = 'male';
const FEMALE = 'female';
protected $guard_name = 'sanctum';
public function educationalBackgrounds()
{
return $this->hasMany("App\Models\Users\EducationalBackground", "user_id");
}
public function seminars()
{
return $this->hasMany("App\Models\Users\Seminar", "user_id");
}
}
I have child table EducationalBackground which is related to User table
class EducationalBackground extends Model
{
use HasFactory;
protected $table = 'users.educational_backgrounds';
protected $fillable = [
'user_id',
'studies_type',
'year',
'course',
];
public function user()
{
return $this->belongsTo('App\Models\User', 'user_id');
}
public function educationalAwards()
{
return $this->hasMany("App\Models\Users\EducationalAward", "educational_background_id");
}
}
And a third table that i want to access the award field
class EducationalAward extends Model
{
use HasFactory;
protected $table = 'users.educational_awards';
protected $fillable = [
'educational_background_id',
'award',
'photo',
];
public function educationalBackground()
{
return $this->belongsTo('App\Models\Users\EducationalBackground', 'educational_background_id');
}
}
I have api get route here
Route::get('/educational-background/{id}', [UserProfileController::class, 'getEducationalBackground']);
Here is my api method it works fine. But i want to go deeper and access the data of third table.
public function getEducationalBackground($id)
{
$educationalBackground = EducationalBackground::with('user')->where('user_id', $id)->get();
return response()->json($educationalBackground, 200);
}
It looks like you're not really grasping the concept of relations yet. Also, I'd advise you to look into route model binding :) What you basically want to be doing is:
public function getEducationalBackground($id)
{
$user = User::find($id);
return $user->educationalBackgrounds()->with('educationalAwards')->get();
}
Also, when you're pretty sure that whenever you want to use backgrounds, you also want to use the awards, you can add the with(...) to the model definition like so:
class EducationalBackground extends Model
{
...
protected $with = ['educationalAwards'];
}
That way, you can simplify your controller method to:
public function getEducationalBackground($id)
{
$user = User::find($id);
return $user->educationalBackgrounds;
}
in this code as:
$latestHerbsInformation = \App\ContentCategories::find('14')->contents->take(5);
which that work fine i want to use inRandomOrder() to get random rows from contents, Contents and ContentCategories are belongsToMany RelationShips and this code:
$latestHerbsInformation = \App\ContentCategories::find('14')->contents->inRandomOrder()->take(5);
don't work for me.
Contents model:
class Contents extends Model
{
use Sluggable;
protected $table = 'contents';
protected $guarded = ['id'];
public function categories()
{
return $this->belongsToMany(ContentCategories::class);
}
}
ContentCategories model:
class ContentCategories extends Model
{
protected $table = 'contents_categories';
protected $guarded = ['id'];
public function contents()
{
return $this->belongsToMany(Contents::class);
}
}
i get this error:
Method inRandomOrder does not exist.
how can i solve this problem? Thanks in advance
The correct query is:
\App\ContentCategories::find('14')->contents()->inRandomOrder()->take(5)->get();
Because this will execute the query and will return a collection:
\App\ContentCategories::find('14')->contents
I have a User-Roles model, using Laravel 4 where a user can have many roles, using Eloquent. I can access all roles linked to a user easily using this code :
class User extends Model {
protected $table = 'user';
protected $fillable = array('name');
public function rolesLinked() {
return $this->hasMany('App\UserRoleLink', 'user_id');
}
}
I've been trying to obtain the roles that are not linked to a user, to display on the specific user's page in a select box. Using this function, included in the User class.
public function rolesNotLinked() {
$user = this
$roles = Roles::whereDoesntHave('App\UserRoleLink',function($query) use ($user){
$query->where('user_id',$user->id);
});
}
The problem is, calling this function gives me the following error.
Call to undefined method Illuminate\Database\Query\Builder::App\UserRoleLink()
I've tried using has with < 1 to see if the function was problematic, but after reading this and the online source code, the function call pretty much does what I've tried.
Is something wrong in my function call, or have I messed up configurations somewhere?
For reference, here are my other Model classes:
class UserRoleLink extends Model{
protected $table = 'user_role_link';
protected $fillable = array('role_id','user_id);
public function role() {
return $this->hasOne('App\Role', 'role_id');
}
}
class Role extends Model{
protected $table = 'role';
protected $fillable = array('name');
}
EDIT: I've found out that I messed up by fillables when I copy-pasted. It didn't fix the issue, but I guess that's one step closer.
To use whereDoesntHave method, you must add the relation in your Role Model.
class Role extends Model{
protected $table = 'role';
protected $fillable = array('name');
public function UserRoles() {
return $this->hasMany('App\UserRoleLink', 'id');
}
}
Also, the whereDoesntHave method first parameter is not thte model but the function of the relation:
public function rolesNotLinked() {
$user = this
$roles = Roles::whereDoesntHave('UserRoles',function($query) use ($user){
$query->where('user_id',$user->id);
});
}
So I have three models and when when one of them dAgency is deleted delete-() I'd like all three to be deleted. The problem is that two of them are being deleted, while the top parent one DemDataSet isn't being deleted. Additionally, when I call:
echo "<pre>", dd(dAgency::find(21)->DemographicReport()->DemDataSet()->get()), "</pre>";
I get this error: Call to undefined method Illuminate\Database\Query\Builder::DemDataSet() But when I try:
echo "<pre>", dd(dAgency::find(21)->DemographicReport()->get()), "</pre>";
It works. So I know the problem is my relation between my DemDataSet model. Below is my model:
<?php
class DemDataSet extends Eloquent {
public $timestamps = false;
protected $connection = 'epcr_dem_data';
protected $table = 'DEMDataSet';
protected $primaryKey = 'pk_DEMDataSet';
public function DemographicReport(){
return $this->hasOne('DemographicReport','fk_DEMDataSet','pk_DEMDataSet');
}
}
class DemographicReport extends Eloquent {
public $timestamps = false;
protected $connection = 'epcr_dem_data';
protected $table = 'DemographicReport';
protected $primaryKey = 'pk_DemographicReport';
public function DemDataSet (){
return $this->belongsTo('DemDataSet','fk_DEMDataSet','pk_DEMDataSet');
}
public function dAgency(){
return $this->hasOne('dAgency','fk_DemographicReport','pk_DemographicReport');
}
public function delete(){
parent::delete();
return $this->DemDataSet()->delete();
}
}
class dAgency extends Eloquent {
public $timestamps = false;
protected $connection = 'epcr_dem_data';
protected $table = 'dAgency';
protected $primaryKey = 'pk_dAgency';
public function DemographicReport(){
return $this->belongsTo('DemographicReport','fk_DemographicReport','pk_DemographicReport');
}
public function dAgency_10(){
return $this->hasMany('dAgency_10','fk_dAgency','pk_dAgency');
}
public function delete(){
parent::delete();
return $this->DemographicReport->delete();
}
}
?>
I've been wrestling with this one for two days now! I really appreciate you taking the time to look at this.
The right way to query laravel model with relationship is this way:
//This is to pull all DemDataSet from DemographicReport
dAgency::find(21)->DemographicReport()->first()->DemDataSet;
//If you need further query, then you call DemDataSet as a method
dAgency::find(21)->DemographicReport()->first()->DemDataSet()->where('your condition here')->get();
I'm pretty new to Laravel and Eloquent, so this could easily be something trivial but anyways I've been missing a good solution so far. So heres my problem:
I have a main gallery and i want the user to be able to upload any images or videos that he needs into that main gallery and select images/videos from that gallery to be shown elsewhere on the website (basically what i'm doing is centralising multimedia content all in one place).
Using deduction (with all my poor knowledge of Eloquent) i found this as best solution for me:
//Gallery Model
class Gallery extends Eloquent {
protected $table = 'gallery';
protected $guarded = array();
public static $rules = array();
public function images() {
return $this->morphMany('Image', 'imageable');
}
public function videos() {
return $this->morphMany('Video', 'videoable');
}
}
//About Orchestra Model
class OrchestraAbout extends Eloquent {
protected $table = 'orchestra_about';
protected $guarded = array();
public static $rules = array();
public function images() {
return $this->morphMany('Image', 'imageable');
}
public function videos() {
return $this->morphMany('Video', 'videoable');
}
}
//Image Model
class Image extends Eloquent {
protected $guarded = array();
public static $rules = array();
public function imageable()
{
return $this->morphTo();
}
}
//Video Model
class Video extends Eloquent {
protected $guarded = array();
public static $rules = array();
public function videoable()
{
return $this->morphTo();
}
}
And when inserting into database i simply duplicate the row and only change the imageable_id /videoable_id and imageable_type/videoable_type to match the OrchestraAbout Model.
Anyone here knows of a better solution for this?
Thanks for all the smart answers! Cheers!