I wanted to get data which is related to an id and I used the find($id) method to get those data, now I wanna get data from two tables which have one to many relationship.
How can I get data which is related to the same id from two table?
I try to this way but it hasn't worked:
public function show($id)
{
$post=Clients::find($id);
return view('pet.shw',['post'=>$post,'pets'=>$post->pets]);
}
Why you dont use with() I have simple solution but maybe not best solution:
Post::with('pets')->where('id',$id)->first();
Maybe below code is work to i dont test it:
Post::with('pets')->find($id);
Of course you should have comments method in your Post Object:
public function pets(){
return $this->hasMany(Pet::class);
}
hope help
You need to first define a relationship between your Client model and Pet model
So, in App\Client, you would have the following relationship:
public function pets()
{
return $this->hasMany(Pet::class);
}
and in App\Pet, you would have the following relationship:
public function client()
{
return $this->belongsTo(Client::class)
}
You should then be able to do this in your Controller:
public function show($id)
{
$post = Client::with('pets')->find($id);
return view('pet.shw')
->withPost($post);
}
and accesses your relationship like this in the pet.shw view:
foreach($post->pets as $pet) {}
For more information read about Eloquent Relationships
Related
My table has many foreign key for example prefecture_id, gender_id and status_id.
And I made model for those table.
So I want to define multiple belongsTo method like following for get all data with query builder..
But In fact belongsTo can't use like this.
public function foreign(){
return $this->belongsTo([
'App/Prefecture',
'App/Gender',
'App/Status',
]
}
And if the only way is defining multiple method for belongs to.
How do I get all belongstos data in querybuilder.
Please give me advice.
As far as I am aware, there's not a way to get multiple belongsTo from a single method. What you have to do is make one method for each relationship and when you want to load the relationships you can do the following.
Model
public function prefecture()
{
return $this->belongsTo(\App\Prefecture::class);
}
public function gender()
{
return $this->belongsTo(\App\Gender::class);
}
public function status()
{
return $this->belongsTo(\App\Status::class);
}
Query
// This will get your model with all of the belongs to relationships.
$results = Model::query()->with(['prefecture', 'gender', 'status'])->get();
Let me first explain the relations of my table, and then I will explain what I cannot do.
So, I have an entity called "Company" it has many "Incomes" which has many "IncomeUnitSale" which has one "IncomeUnitSaleUnitPrice"
Company 1->* Income 1->* IncomeUnitSale 1->1 IncomeUnitSaleUnitPrice
Models:
Company Model
public function Income(){
return $this->hasMany('App\Income');
}
Income Model (table has "company_id")
public function Company(){
return $this->belongsTo('App\Company');
}
public function IncomeUnitSale(){
return $this->hasMany('App\IncomeUnitSale');
}
IncomeUnitSale Model (table has "income_id")
public function Income(){
return $this->belongsTo('App\Income');
}
public function IncomeUnitSaleUnitPrice(){
return $this->hasOne('App\IncomeUnitSaleUnitPrice');
}
IncomeUnitSaleUnitPrice (table has "income_unit_sale_id")
public function IncomeUnitSale(){
return $this->belongsTo('App\IncomeUnitSale');
}
What I am trying to do is the following:
$company = Company::where("id","=",1)->first();
$company->Income->IncomeUnitSale->IncomeUnitSaleUnitPrice
But It says its null, it works till $company->Income->IncomeUnitSale but after that doest't show any relation.
Can somebody please tell me what I am doing wrong?
Thank you!
hasMany relationships will always return an Eloquent Collection object. If there are no related records, it will just be an empty Collection. hasOne and belongsTo relationships will always return either the related Model, or null if there is no related model.
Because some of your relationships are hasMany, you have to iterate the returned Collection to be able to go further. So, instead of $company->Income->IncomeUnitSale->IncomeUnitSaleUnitPrice, you have to:
foreach($company->Income as $income) {
foreach($income->IncomeUnitSale as $sale) {
echo $sale->IncomeUnitSaleUnitPrice->price;
}
}
hi sorry bit of a newbie here but I am have three tables users, profiles, friends. they all have the user_id fields within them and I want fetch all of the fields in one statement using Eloquent and not DB::statement and doing the table joins.
How can I achieve this?
Try this
use the User class and the with method that laravel has to query model relationships
$user = User::with(['profile', 'friend'])->get();
Ensure your models has the correct relationships as follows:
app/models/User.php
public function friend () {
return $this->hasMany('Friend');
}
public function profile () {
return $this->hasOne('Profile');
}
app/models/Profile.php
public function user() {
return $this->belongsTo('User');
}
app/models/Friend.php
public function user() {
return $this->belongsTo('User');
}
use some thing like this:
You should define relations in your models with hasOne, hasMany.
class Review extends Eloquent {
public function relatedGallery()
{
$this->hasOne('Gallery', 'foreign_id', 'local_id');
}
}
class Gallery extends Eloquent {
public function relatedReviews()
{
$this->hasMany('Review', 'foreign_id', 'local_id');
}
}
$gallery = Gallery::with('relatedReviews')->find($id);
Will bring the object Gallery with
$gallery->id
gallery->name
...
$gallery->relatedReviews // array containing the related Review Objects
In my Image model I have two relationships with my Article model, one many-to-many and one one-to-many:
public function articlesAlbums()
{
return $this->belongsToMany('Article', 'article_image', 'image_id', 'article_id')->publishedFilter();
}
public function articleThumb()
{
return $this->hasMany('Article')->publishedFilter();
}
I merge the results from these to get all images used by Article:
public function getArticlesAllAttribute()
{
return $this->articlesAlbums->merge($this->articleThumb);
}
In my Article model I have two relationships with my Image model:
public function images()
{
return $this->belongsToMany('Image', 'article_image', 'article_id', 'image_id');
}
public function thumbnail()
{
return $this->belongsTo('Image', 'image_id');
}
I would like to merge these as well, same way I do in my Image model:
public function getImagesAllAttribute()
{
return $this->images->merge($this->thumbnail);
}
But that doesn't work, it seems to be because my thumbnail relationship is belongsTo, not hasMany. So maybe it's not a collection. When I try I get an exception:
Call to a member function getKey() on a non-object
I've tried converting it to a collection with:
new Collection($this->thumbnail)
but get an error saying:
__construct() must be of the type array, object given
How can I merge $this->images and $this->thumbnail in my Article model to get the same results that I do in my Image model? Meaning that the results are merged with no duplicates.
Many thanks.
Update:
Since Razor made me realized that $this->thumbnail did not in fact return a collection, but rather a single object it made me rethink if merge was really the proper function to use.
return $this->images->merge($this->thumbnail()->get());
This seemed to cause a lot of unnecessary queries, even though I was eager loading.
So I ended up doing this instead:
public function getImagesAllAttribute()
{
$imagesAll = $this->images;
if ( ! is_null($this->thumbnail)) $imagesAll->add($this->thumbnail);
return $imagesAll->unique();
}
It drastically reduced the number of queries, and the result is the same.
$this->thumbnail is the same as $this->thumbnail()->first(), to get a collection, you may try:
public function getImagesAllAttribute()
{
return $this->images->merge($this->thumbnail()->get());
}
So I am working on a project in Laravel 4, and I am wondering how to do a many to many relationship on a single Model. I think comments should be able to belong to other comments (replies) Or at the very least replies should be able to have many replies.
I think that the way I would build the model would be:
Class Comment extends Eloquent {
public function comments() {
// assuming my comments table has an $id column and a second $comment_id table
// do I even need to specify the column name?
return $this->hasMany('Comment', 'comment_id');
}
public function comment() {
return $this->belongsTo('Comment');
}
}
Where can I look for more documentation about this, or what is the Laravel way to achieve what I am trying to achieve?