I have a pivot table of users_operators.
I want to grab the operator_id of the user.
This is how i do this now, but its seems like verbose way.
if (Auth::user()->type === 'operator') {
$user = Auth::user();
// There is a better way to do this?
$operator_id = $user->operator[0]['pivot']['operator_id'];
Session::put('operatorId', $operator_id);
}
class Operator extends \Eloquent
{
public function users() {
return $this->belongsToMany('User');
}
}
class User extends \Eloquent
{
public function operator() {
return $this->belongsToMany('Operator');
}
}
I'm, battling insomnia and not functioning at 100%, but you should be able to get away with $user->operator->id based on what I'm interpreting your models to be (it looks like you had a typo when you copied them into the question).
If that doesn't work, you might want to check out the "Dynamic Properties" section in the Eloquent docs for more info, if you haven't already.
Related
I have a model called RealEstate, this model has a relation with another model called TokenPrice, I needed to access the oldest records of token_prices table using by a simple hasOne relation, So I did it and now my relation method is like following:
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\HasOne;
class RealEstate extends Model
{
public function firstTokenPrice(): HasOne
{
return $this->hasOne(TokenPrice::class)->oldestOfMany();
}
}
By far it's fine and no complexity. But now, I need to involve another relation into firstTokenPrice.
Let me explain a bit more:
As my project grown, the more complexity was added it, like changing firstTokenPrice using by a third table called opening_prices, so I added a new relation to RealEstate called lastOpeningPrice:
public function lastOpeningPrice(): HasOne
{
return $this->hasOne(OpeningPrice::class)->latestOfMany();
}
So the deal with simplicity of firstTokenPrice relation is now off the table, I want to do something like following every time a RealEstate object calls for its firstTokenPrice:
Check for lastOpeningPrice, if it was exists, then firstTokenPrice must returns a different record of token_price table, otherwise the firstTokenPrice must returns oldestOfMany of TokenPrice model.
I did something like following but it's not working:
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\HasOne;
class RealEstate extends Model
{
public function lastOpeningPrice(): HasOne
{
return $this->hasOne(OpeningPrice::class)->latestOfMany();
}
public function firstTokenPrice(): HasOne
{
$lop = $this->lastOpeningPrice;
if ($lop) {
TokenPriceHelper::getOrCreateFirstToken($this, $lop->amount); // this is just a helper function that inserts a new token price into `token_prices` table, if there was none exists already with selected amount
return $this->hasOne(TokenPrice::class)->where('amount', $lop->amount)->oldestOfMany();
}
return $this->hasOne(TokenPrice::class)->oldestOfMany();
}
}
I have checked the $this->hasOne(TokenPrice::class)->where('amount', $lop->amount)->oldestOfMany() using by ->toSql() method and it returns something unusual.
I need to return a HasOne object inside of firstTokenPrice method.
You can use ofMany builder for that purpose:
public function firstTokenPrice(): HasOne
{
$lop = $this->lastOpeningPrice;
if ($lop) {
TokenPriceHelper::getOrCreateFirstToken($this, $lop->amount); // this is just a helper function that inserts a new token price into `token_prices` table, if there was none exists already with selected amount
return $this->hasOne(TokenPrice::class)->ofMany([
'id' => 'min',
], function ($query) use ($lop) {
$query->where('amount', $lop->amount);
});
}
return $this->hasOne(TokenPrice::class)->oldestOfMany();
}
I used ->oldest() with a custom scope called amounted in TokenPrice model:
class TokenPrice extends Model
{
public function scopeAmounted(Builder $query, OpeningPrice $openingPrice): Builder
{
return $query->where('amount', $openingPrice->amount);
}
/....
}
And then changed my firstTokenPrice
public function firstTokenPrice(): HasOne
{
$lop = $this->lastOpeningPrice;
if ($lop) {
TokenPriceHelper::getOrCreateFirstToken($this, $lop->amount);
return $this->hasOne(TokenPrice::class)->amounted($lop)->oldest();
}
return $this->hasOne(TokenPrice::class)->oldestOfMany();
}
It's working, but I don't know if it's the best answer or not
I have a little problem,
i can't see how can i make a three table relation on Laravel.
DELETED
If someone can help me, I take notes !
Thanks !
As far as I can see, you need to create a relationship to your pivot table and then, you can create relationships to both table.
class Contact extends Model
{
public function filmJobs()
{
return $this->hasMany(ContactFilm::class);
}
}
class ContactFilm extends Model
{
public function film()
{
return $this->hasOne(Film::class);
}
public function job()
{
return $this->hasOne(Job::class);
}
}
You can now use it like that: $contact->filmJobs[0]->film and $contact->filmJobs[0]->job.
I'm a real newbie to Laravel but I'm loving it so far. I'm struggling on thing however, I want to retrieve the data for the user that is logged in and I am not sure how to go about this.
I have a few tables but I'll keep it basic for now, I have projects table and a users table, I've defined the relationships between these two in the models as so:
user.php
public function projects() {
return hasMany('project');
}
project.php
<?php
use Illuminate\Database\Eloquent\ModelNotFoundException;
class Project extends Eloquent
{
public function user()
{
return belongsTo('user');
}
}
I know I can do the following to retrieve all projects in the database with a foreach loop, however this doesn't retrieve the logged in users projects:
$projects = DB::table('projects')->get();
I saw one tutorial which wasn't very in depth but he said to access the model query I would have to use the following command:
$project = User::all()->projects;
However this hasn't worked either. Can anyone point me into the right direction with real tutorials or post simple examples?
Thanks in advance
Those are the projects of your logged in user:
if (Auth::check())
{
$projects = Auth::user()->projects;
}
And this must be in your relation:
class User extends Eloquent
{
public function projects() {
return this->hasMany('Project');
}
}
You also need to add $this to your Project relation:
class Project extends Eloquent
{
public function user()
{
return $this->belongsTo('User');
}
}
I was creating a like system for my website. in this I wanted one user can only like one time for a post. and a post can be liked by many user. Also many user can like many post.
So if I guess it right, It is a many to many reletionship.
in this context,
I create the following table
... users table:
id
name
....
posts table :
id
post
...post_likes table
id
user id
poost_id
Now I am having the following model for
user :
class User extends SentryUserModel {
public function post_likes()
{
return $this->has_many('Post_like', 'id');
}
}
post :
class Post extends Eloquent {
public function post_likes()
{
return $this->has_many('Post_like', 'id');
}
}
post_like :
class Post_like extends Eloquent {
public function posts()
{
return $this->belongs_to('Post', 'post_id');
}
public function users()
{
return $this->belongs_to('User', 'user_id');
}
}
now when I am going to insert into the database (for post_likes table) I am getting an error called
Illuminate \ Database \ Eloquent \ MassAssignmentException
user_id
Also I want to know is there any way to inset into database like
$user->like()->save($user); ?????
Thank you in advance. Happy coding . \m/
I'll start with a basic issue, firstly you might want to make sure all your tables are lower case (still as a snake case as well), it's not required but it's ultimately how it's expected to be with Laravel so it makes life easier to keep with that. Also a note to the wise, like Class names, database tables are typically in the singular so user instead of users
Secondly yes you can do an insert with $user->post_likes()->save($debate); as your post_likes method on the user class returns has_many.
Thirdly, your design of the Post_like class is a bit off, you could be better off make it like so:
class PostLike extends Eloquent { // note that PostLikes is a more standard naming for a class, they should ideally be camel case names but with all capitals for words
protected $table = 'post_like'; // specifies the table the model uses
public function post() // this should be singular, the naming of a belngs_to method is important as Laravel will do some of the work for you if let it
{
return $this->belongs_to('Post'); // by naming the method 'post' you no longer need to specify the id, Laravel will automatically know from the method name and just adding '_id' to it.
}
public function users()
{
return $this->belongs_to('User');
}
}
Fourthly, your other classes could be better as:
class Post extends Eloquent {
public function post_likes()
{
return $this->has_many('PostLike'); // doesn't require you to specify an id at all
}
}
I can't exactly tell you why you're getting that mass assign error, your post is a bit garbled and doesn't look like you've included the code that actually causes the exception? I have a feeling though is that you're trying to do an insert for multiple database rows at one time but haven't defined a fillable array for PostLike such as with here: http://four.laravel.com/docs/eloquent#mass-assignment
According to Laravel 5:
User Model:
namespace App;
use Illuminate\Database\Eloquent\Model;
class User extends Model {
public function post_likes()
{
return $this->hasMany('App\PostLike');
}
}
Post Model:
namespace App;
use Illuminate\Database\Eloquent\Model;
class Post extends Model {
public function post_likes()
{
return $this->hasMany('App\PostLike');
}
}
PostLike Model:
namespace App;
use Illuminate\Database\Eloquent\Model;
class PostLike extends Model {
protected $table = 'post_like';
public function posts()
{
return $this->belongsTo('App\Post');
}
public function users()
{
return $this->belongsTo('App\User');
}
}
and if you want to save the post_like data then:
$inputs['post_id'] = 1;
$inputs['user_id'] = 4;
$post_like = PostLike::create($inputs);
Hope this helps!!
First things first, I'm starting with php and MVC frameworks, I'm still not really good at this, I also couldn't do a lot of research on the problem because I don't really know how to translate this into a google search.
And thats also why my question title is so funny
Ok, so lets say I have three models: Post, Commenter and Comment
The comments belong both to the posts and the commenters, so I have this code in my models, its all very simple
class Post extends Eloquent {
public function comments() {
return $this->has_many('Comment');
}
}
...
class Commenter extends Eloquent {
public function comments () {
return $this->has_many('Comment');
}
}
...
class Comment extends Eloquent {
public function commenter () {
return $this->belongsTo('Commenter');
}
public function post () {
return $this->belongsTo('Post');
}
}
And then I want a query to list commenters ONLY IF they have comments on a given post
I need to go through the commenters list and then find whoever has comments belonging to that one post. (I don't really need to worry about being optimal since its an small experimental project with a small database)
I have no Idea how to pass this on to a view using a controller, Commenter::has('comments') will display anyone that has a comment anywhere, but I think thats the starting point. I couldnt really find an answer in the documentation also.
Please let me know if I havent made my question clear enough
Having
class Comment extends Eloquent {
public function commenter () {
return $this->belongsTo('Commenter');
}
public function post () {
return $this->belongsTo('Post');
}
}
class Commenter extends Eloquent {
public function comments () {
return $this->hasMany('Comment');
}
}
class Post extends Eloquent {
public function comments () {
return $this->hasMany('Comment');
}
}
You can
$post = Post::find($givenPostID);
View::make('posts.comments.listCommenters')
->with('commenters', $post->comments()->groupBy('commenter_id')->get(['commenter_id']));
And in the View
#foreach($comments as $comment)
Author: <strong>{{$comment->commenter->name}}</strong>
#endforeach
Or you can create a new property
class Post extends Eloquent {
public function getCommentersAttribute()
{
$comments = $this->comments;
foreach($this->comments as $comment)
{
/// do whatever you need to grab your list of commenters
}
return $yourListOfCommenters
}
}
And then you just refer to it anywhere you need:
$post->commenters
I realized there wouldnt be a method as simple as I wanted, so I decided to go for a new Many to Many relationship...
I added
public function posts () {
return $this->belongsToMany('Post');
}
and
public function commenters () {
return $this->belongsToMany('Commenter');
}
and now I can simply use a
->with ('commenters', Post::find($post_id)->commenters()->get())
in my controller to find my list of commenters
Thanks for the help, everybody who answered.