I try to show specific columns of my data after call load() , let say 'id','kd_prop_id' only. can somebody help me
public function show(Provinsi $provinsi)
{
abort_if(Gate::denies('provinsi_show'), Response::HTTP_FORBIDDEN, '403 Forbidden');
return new ProvinsiResource($provinsi->load([])); // <-- i want show specific column here..
}
right now its show all fields :
"data": {
"id": 616,
"kd_prop_id": 11,
"kd_kab": 1102,
"kd_dt1": "06",
"kd_dt2": "10",
"nama_kab": "KAB. ACEH",
"lat": 3.3,
"lng": 97.69,
"kd_bast": "061300",
"created_at": null,
"updated_at": null,
"deleted_at": null
}
plase help..thanks
Actually my choice would be to show the fields I want in the ProvinsiResource.
But you can review for only model:
$company = Company::query()
->first();
//$company->load(['customer']); // All company columns and customer columns
$company->load([
'customer' => function($query) {
return $query->select(['id', 'name']);
}
]);
$company->only(['id', 'customer_id', 'name', 'customer']); // Only specific columns in Company and Customer columns
If you have collection, this way could be better:
$companies = Company::query()
->get();
$companies->map(function ($company) {
return collect($company->toArray())
->only(['id', 'name', 'email'])
->all();
});
Related
I have tables emails and email_attachments as follows:
Schema::create('emails', function (Blueprint $table) {
$table->id();
$table->string('email')->nullable(false);
$table->string('subject')->nullable(false);
$table->text('body')->nullable(false);
$table->timestamps();
});
Schema::create('email_attachments', function (Blueprint $table) {
$table->id();
$table->foreignId('email_id')->nullable(false);
$table->string('file_name')->nullable(false);
$table->string('file_path')->nullable(false);
$table->foreign('email_id')->references('id')->on('emails');
});
And my models classes Email and EmailAttachment as follows:
class Email extends Model
{
use HasFactory;
protected $fillable = ['email', 'subject', 'body'];
function attachments()
{
return $this->hasMany(EmailAttachment::class);
}
}
class EmailAttachment extends Model
{
use HasFactory;
public $timestamps = false;
protected $fillable = ['email_id', 'file_name', 'file_path'];
protected $appends = ['url'];
function email()
{
return $this->belongsTo(Email::class);
}
public function getUrlAttribute()
{
return Storage::disk('public')->url($this->file_name);
}
}
Doing this return Email::with('attachments')->get(); I get everything as response:
{
"id": 1,
"email": "me#me.com",
"subject": "My Subject",
"body": "<html><body><h1>My test message.</h1></body></html>",
"created_at": "2021-02-26T23:32:08.000000Z",
"updated_at": "2021-02-26T23:32:08.000000Z",
"attachments": [
{
"id": 1,
"email_id": 1,
"file_name": "foo.jpg",
"file_path": "/home/user/laravel/storage/app/foo.jpg",
"url": "http://127.0.0.1:8000/storage/foo.jpg"
}
]
}
And this return Email::with('attachments:file_name')->get(); I get attachments as an empty array:
{
"id": 1,
"email": "me#me.com",
"subject": "My Subject",
"body": "<html><body><h1>My test message.</h1></body></html>",
"created_at": "2021-02-26T23:32:08.000000Z",
"updated_at": "2021-02-26T23:32:08.000000Z",
"attachments": []
}
How can I get only this?
{
"email": "me#me.com",
"subject": "My Subject",
"body": "<html><body><h1>My test message.</h1></body></html>",
"attachments": [
{
"url": "http://127.0.0.1:8000/storage/foo.jpg"
}
]
}
I already did this tries:
return Email::with('attachments:url')->get(['email', 'subject', 'body']);
SQLSTATE[42S22]: Column not found: 1054 Unknown column 'url' in 'field list' (SQL: select `url` from `email_attachments` where `email_attachments`.`email_id` in (0))"
return Email::with('attachments')->get(['email', 'subject', 'body', 'url']);
"SQLSTATE[42S22]: Column not found: 1054 Unknown column 'url' in 'field list' (SQL: select `email`, `subject`, `body`, `url` from `emails`)"
return Email::with('attachments:url')->get(['email', 'subject', 'body', 'url']);
"SQLSTATE[42S22]: Column not found: 1054 Unknown column 'url' in 'field list' (SQL: select `email`, `subject`, `body`, `url` from `emails`)"
PS.: I'm using Laravel 8.29.0.
There are several ways you can achieve this, usually, in other frameworks, these objects tend to be called "DTO objects" ( Data Transfer Objects )
For Laravel, you could simply get the resulting query from the database, and perform simple array transformations on it using the collections() API.
For example:
$collection = Email::with('attachments')->get();
$collection->map(function ($record) {
return ['email' => $record->email, 'subject' => $record->subject, 'attachments' => $record->attachments ];
});
Now you would just return this as the response:
$response = $collection->map(...);
return response()->json($response, 200);
From your controller.
Though you should be aware that these transformations happen in PHP and not SQL side of things, but the user won't know which field you've returned from the database. https://laravel.com/docs/8.x/queries#select-statements
You can add ->select() anywhere between the other queries and ->get() because until that point you're still in the query builder mode ( You're making your SQL query )
So you could do this:
Email::with('attachments')->select('my_field','my_field2')->get();
Keep in mind that this works for any query builder methods. https://laravel.com/docs/8.x/queries
Finally, you may look into API resources, as they provide a way you can format your responses. The documentation will explain it with far more better job then me: https://laravel.com/docs/8.x/eloquent-resources
When loading specific fields in eager loading you should also select the identifier of the record which is used to map the related records. So in your case email (hasMany) attachments via foreign key email_id which points to Email
See Eager Loading Specific Columns
When using this feature, you should always include the id column and any relevant foreign key columns in the list of columns you wish to retrieve.
Email::with('attachments:email_id,file_name')->get();
Now this will give you 2 fields from attachments relation
"attachments": [
{
"email_id": 1,
"file_name": "foo.jpg"
}
]
So if you need url attribute which is a custom attribute and not physically present in your table you will need to trick the query builder to produce such SQL query with url attribute included, initially with null value and later on when this query output is transformed by laravel data transformation your url's accessor getUrlAttribute() will fill this attribute with your expected output
Email::with(['attachments' => function ($query) {
$query->select(['email_id', 'file_name', \DB::raw('null as url')]);
}])->get();
Now attachments collection will have following data in it
"attachments": [
{
email_id": 1,
"file_name": "foo.jpg",
"url": "http://127.0.0.1:8000/storage/foo.jpg"
}
]
I have two models TeamleaderCompany which : has many TeamleaderCompanyTag
TeamleaderCompany
public function teamleaderCompanyTags()
{
return $this->hasMany('App\TeamleaderCompanyTag');
}
TeamleaderCompanyTag
public function teamleaderCompany()
{
return $this->belongsTo(TeamleaderCompany::class);
}
when I TeamleaderCompany::all() I have this results :
(...)
"teamleader_company_tags": [
{
"id": 7,
"tag": "hot lead",
"teamleader_company_id": 3,
"created_at": "2019-09-03 09:23:51",
"updated_at": "2019-09-03 09:23:51"
},
{
"id": 8,
"tag": "reseller",
"teamleader_company_id": 3,
"created_at": "2019-09-03 09:23:51",
"updated_at": "2019-09-03 09:23:51"
}
]
(...)
What I'm trying to do is to show TeamleaderCompany results where teamleaderCompanyTags has only one tag which is 'reseller' (if there is another tag except 'reseller' don't show)
$companies->whereHas(
'teamleaderCompanyTags',
function ($query) use ($condition) {
$query->where('tag',
(...)
);
}
);
thanks
Try this method
TeamleaderCompany::with('teamleaderCompanyTags:id,tag')
->whereHas('teamleaderCompanyTags',function(\Illuminate\Database\Eloquent\Builder $query){
$query->where('tag', "reseller");
})->get();
Try this query:
TeamleaderCompany::has('teamleaderCompanyTags', '=', 1) // companies that have only one tag
->whereHas('teamleaderCompanyTags', function ($query) { // companies that have `reseller` tag
$query->where('tag', 'reseller');
})
->get()
You have two conditions.
it need to have the "reseller" tag
it's the only tag that it has
TeamleaderCompany::whereHas('teamleaderCompanyTags', function ($query) {
$query->where('tag', 'reseller');
})
->whereDoesntHave('teamleaderCompanyTags', function ($query) {
$query->where('tag', '!=', 'reseller');
})
->get()
Define a simple query for getting three tables data
table users,
table user_details,
table user_device_datas
On my LoginController define a function to get data from UserDetails model .
$userInformation = UserDetails::userDetail($user->id);
on User model define a relationship
public function UserDeviceData() {
return $this->hasMany(UserDeviceData::class);
}
public function UserDetails()
{
return $this->hasOne(UserDetails::class);
}
On UserDetails model my query for getting data look like
public static function userDetail($id){
$result = User::whereHas('userDetails',function($query) use ($id) {
$query->where('user_id',$id);
})->whereHas('UserDeviceData',function($query) use ($id) {
$query->where('user_id',$id);
})->where('user.id', $id)
->with('userDetails','UserDeviceData')
->first();
}
Response i am getting :
"userInfo": {
"id": 2,
"name": null,
"email": "test#test.com",
"phone": null,
"address": null,
"company": null,
"description": null,
"device_id": null,
"system_role": "User",
"status": "Active",
"otp_verify_id": "253526851",
"parent_id": 0,
"last_login": "2018-04-23 12:03:43",
"profile_picture": null,
"business_card_pic": null
}
I am not getting my userDetails Data on the query.what is the mistake in my code?
public static function userDetail($id){
$result = User::whereHas('userDetails',function($query) use ($id) {
$query->where('user_id',$id);
})->whereHas('UserDeviceData',function($query) use ($id) {
$query->where('user_id',$id);
})->where('users.id',$id)
->with(['UserDetails' => function($query) use ($id){
$query->where('user_id',$id);
},
'UserDeviceData' => function($query) use ($id){
$query->where('user_id',$id);
}
])
->first();
return $result ;
}
You have to use with() to get the relations too.
I'm building an api using eager loading so i can simply return the user model with its deep relations and it automatically be converted as json. Here's the set up.
users
id
..
clients
id
..
user_clients
id
user_id
client_id
..
campaigns
id
..
client_campaigns
id
client_id
campaign_id
..
campaign_activities
id
campaign_id
..
client_campaign_activity_templates
id
campaign_activity_id
client_id *(templates are unique per client)*
..
I've setup the models' relationships.
User
public function clients() {
return $this->belongsToMany('App\Client','user_clients');
}
Client
public function campaigns() {
return $this->belongsToMany('App\Campaign','client_campaigns');
}
Campaign
public function activities() {
return $this->hasMany('App\CampaignActivity');
}
CampaignActivity
public function templates() {
return $this->hasMany('App\ClientCampaignActivityTemplate')
}
I have a simple api endpoint to provide a JSON of a User object including its deep relations using eager loading.
public function getLoggedInUser(Request $request) {
return \App\User::with('clients.campaigns.activities.templates')->find($request->user()->id);
}
Testing this using postman, I can get the user including its deep relations.
{
"user": {
"id": 1,
"name": "user1",
"clients": [
{
"id": 1,
"name": "client1",
"campaigns": [
{
"id": 1,
"name": "campaign1",
"activities": [
{
"id": 1,
"name": "activity1",
"templates": [
{
"id": 1,
"name": "template1 for client1",
"client_id": 1,
"body": "this is a template.",
}, {
"id": 2,
"name": "template1 for client2",
"client_id": 2,
"body": "This is a template for client2"
}
]
}, {
"id": 2,
"name": "activity2",
"templates": []
}, {
"id": 3,
"name": "activity3",
"templates": []
}
]
}
]
}
]
}
}
However, on the user->clients->campaigns->activities->templates level, it will list all the templates for that activity. I know based on the code of the relationships of the models above that it's supposed to behave like that.
So the question is How would you filter the templates to filter for both campaign_activity_id and client_id?
I've been experimenting on how to filter the templates so it will only list templates for that activity AND for that client as well. I have a working solution but it's N+1, I'd prefer eloquent approach if possible. I've been scouring with other questions, answers and comments for a closely similar problem, but I had no luck, hence I'm posting this one and seek for your thoughts. Thank you
I think what you need are eager loading constraints.
public function getLoggedInUser(Request $request) {
return \App\User::with('clients.campaigns.activities.templates',
function($query) use($request) {
$client_ids = Client::whereHas('users', function($q) use($request){
$q->where('id', $request->user()->id);
})->pluck('id');
$query->whereIn('templates.client_id', $client_ids);
})->find($request->user()->id);
}
Not tested but it should only require one additional query.
What I am doing is: define a constraint for your eager loading, namely only show those templates that have a client_id that is in the list (pluck) of Client IDs with a relation to the User.
Try using closures to filter through related models:
$users = App\User::with([
'clients' => function ($query) {
$query->where('id', $id);
},
'clients.campaigns' => function ($query) {
$query->where('id', $id);
}
])->get();
Here's my working solution, but I'm still interested if you guys have a better approach of doing this.
On the CampaignActivity model, I added a public property client_id and modified the relationship code to
CampaignActivity
public $client_id = 0
public function templates() {
return $this->hasMany('App\ClientCampaignActivityTemplate')->where('client_id', $this->client_id);
}
and on my controller, limit the eager loading to activities only (actually, there are more sqls executed using eager loading[9] in this case vs just iterating[7], and also eager loading doesn't make sense anymore because we're iterating lol)
public function getLoggedInUser(Request $request) {
foreach ($user->clients as $client)
foreach( $client->campaigns as $campaign)
foreach ($campaign->activities as $activity) {
$activity->client_id = $client->id;
$activity->templates; //to load the values
}
return $user;
}
I need to alias when I do a Laravel eager loading:
$posts = Post::with(array('images as main_image' => function($query) // do not run
{
$query->where('number', '=', '0');
}))
->where('id', '=', $id)
->get();
return Response::json($posts);
I need to to this because I want the JSON response like this:
[
{
"id": 126,
"slug": "abc",
"name": "abc",
"created_at": "2014-08-08 08:11:25",
"updated_at": "2014-08-28 11:45:07",
"**main_image**": [
{
"id": 223,
"post_id": 126
...
}
]
}
]
It is possible?
Perfect! you give me the idea. Finally I've done this:
Post.php
public function main_image()
{
return $this->hasMany('FoodImage')->where('number','=','0');
}
public function gallery_images()
{
// for code reuse
return $this->main_image();
}
PostController.php
$posts = Post::with('main_image', 'gallery_images')
->where('id', '=', $id)
->get();
I don't think you can do that with Eloquent, but there would be a few work-arounds that might work.
If you are using PHP 5.6, it's possible to alias the function.
use function images as main_image;
If you are using a version of PHP less than that, you can create a main_image() function and have it call images().
public function main_image()
{
return $this->images();
}