Laravel Eloquent Relationship hasMany hasOne - php

I am trying to get my head around Laravel's relationships but having difficulty with the last part of what I'm trying to achieve.
My tables are like so:
pagetemplates
id
pages
id
pagetemplate_id
pagetemplate_blocks
id
pagetemplate_id
pagetemplateblocks_content
id
page_id
page_template_block_id
So when loading a page out of the DB I need to get it with pagetemplates, with it's blocks and with the content.
Here's my code so far:
Page.php
public function pageTemplate()
{
return $this->belongsTo('PageTemplate', 'pagetemplate_id')->with('blocks');
}
public function pagetemplateblockcontent()
{
return $this->belongsToMany('PageTemplateBlockContent', 'pagetemplateblocks_content', 'page_id', 'page_template_block_id')->withTimestamps();
}
public function pagecontent()
{
return $this->hasMany('PageTemplateBlockContent', 'page_id')->with('pagetemplateblock');
}
PageTemplate.php
public function page()
{
return $this->hasMany('Page', 'pagetemplate_id');
}
public function blocks() {
return $this->hasMany('PageTemplateBlock', 'pagetemplate_id')->orderBy('sort_order', 'asc')->with('blockcontent');
}
PageTemplateBlock.php
public function pagetemplate() {
return $this->belongsTo('PageTemplate', 'pagetemplate_id');
}
public function blockcontent() {
return return $this->hasOne('PageTemplateBlockContent');
}
PageTemplateBlockContent.php
public function pagetemplateblock()
{
return $this->belongsTo('PageTemplateBlock', 'page_template_block_id');
}
However, the issue is with the content, if I try this it returns one instance of PageTemplateBlockContent, which is the same for all of the pages. Although there should be a different PageTemplateBlockContent for each Page. I'm not sure how to get around this, so any ideas would be greatly appreciated.
UPDATED
My Controller calls
$this->pageRepo->where('id', $id)->with('pageTemplate');
"pageTemplate" returns the following:
return $this->belongsTo('PageTemplate', 'pagetemplate_id')->with('blocks');
"blocks" returns the following:
return $this->hasMany('PageTemplateBlock', 'pagetemplate_id')->orderBy('sort_order', 'asc')->with('blockcontent');
"blockcontent" returns the following:
return $this->hasOne('PageTemplateBlockContent');
So this means it's never hitting the "pagetemplateblockcontent" which Joost suggested creating.

Change
public function pagetemplateblockcontent()
{
return $this->belongsToMany('PageTemplateBlockContent', 'pagetemplateblocks_content', 'page_id', 'page_template_block_id')->withTimestamps();
}
to
public function pagetemplateblockcontent()
{
return $this->belongsToMany('PageTemplateBlockContent', 'pagetemplateblockscontent_page', 'page_id', 'page_template_block_id')->withTimestamps();
}
and create an table page_pagetemplateblockcontent with two primary keys like so.
$table->integer("page_id")->unsigned();
$table->integer("page_template_block_id")->unsigned();
$table->primary(['page_id', 'page_template_block_id']);

Related

Laravel - relationship

I'm trying to figure out how I can get a nested relationship but without any success.
Modal: Workout
public static function getWorkout($workout_id = null)
{
if ($workout_id) {
return Workout::whereId($workout_id)->with('exercises.sets')->first();
}
return [];
}
public function exercises()
{
return $this->belongsToMany('App\Models\Exercise');
)
Modal: Exercise
public function sets()
{
return $this->hasMany('App\Models\Set');
}
This solution gives me all sets based on "exercise_id". I need to get only the sets within the workout.
If I do this it works, the problem is now how I should get the ID of the workout to pass. I've tried to put the relation in the Workout Model as well but then the response of sets will get outside the exercise array.
public function sets()
{
return $this->hasMany('App\Models\Set')->where('workout_id', 5);
}
Try the following snippet where I specify a condition for the eager load.
public static function getWorkout($workout_id = null)
{
if ($workout_id) {
return Workout::whereId($workout_id)->with(['exercises.sets' => function($query) use($workout_id)
{
$query->where('workout_id', $workout_id);
}])->first();
}
return [];
}

Eloquent all records relationship

I'm trying to build an alternative relationship that returns all records instead of only related records. I have tried returning a query builder, but that doesn't work, it must be a relationship. What should I return to make this work?
public function devices()
{
if ($this->admin) {
// return all devices relationship instead
} else {
return $this->belongsToMany('Device', 'permissions');
}
}
Fiddle: https://implode.io/XXLGG8
Edit: I'd like to continue building the query in most cases, not just get the devices.
The devices() function in your model is expected to return a relation, you shouldn't add the if statement there. Make your devices() function like this:
public function devices()
{
return $this->belongsToMany('Device', 'permissions');
}
In your User model add a new function:
public function getDevices() {
if($this->admin === true) {
return Device::all();
}
return $this->devices();
}
Now you can do:
$admin->getDevices(); // will return all devices
$user->getDevices(); // will return only relations
I actually went a slightly different way and used a scope:
protected function scopeHasAccess($query, User $user)
{
if ($user->admin) {
return $query;
}
return $query->join('permissions', 'permissions.device_id', "devices.id")
->where('permissions.user_id', $user->user_id);
}
Add devices accessor method to the User model and implement your logic there.
public function getDevicesAttribute() {
if ($this->admin) {
return Device::all();
}
return $this->getRelationValue('devices');
}
See updated "fiddle".

laravel dynamic scope not working

I try to get my categories base on their status and i have scope below in my category model:
public function scopeOfStatus($query, $status)
{
return $query->where('status_id', $status);
}
And my controller is like:
public function finder() {
$findercategories = Category::OfStatus('Active')->get();
return response()->json($findercategories);
}
My route is like:
Route::get('/finder','frontend\SearchController#finder');
But i get blank page as result. Any idea?
update
if i use $findercategories = Category::ofStatus(1)->get(); i get the result that i want but it's static not dynamic :\
Get the Id's from the statuses table with respect to the searched value and use the Id's to get the Category
public function scopeOfStatus($query, $status)
{
$statuses = Status::where('title', $status)->pluck('id'); // Or relevant column name
return $query->whereIn('status_id', $statuses);
}
and in your Controller you could do so
public function finder() {
$findercategories = Category::ofStatus('Active')->get();
return response()->json($findercategories);
}

Relationships returning wrong/null data (Laravel 5.2)

Got a domain table which has a One To Many relationship with domain_hosts_table, server_hosts_table and systems_table. So far so good.
Calling the table data:
$domains = Domain::with('domain_host', 'server_host', 'system')->get();
Domain model :
public function domain_host()
{
return $this->hasOne('App\DomainHost', 'id');
}
public function server_host()
{
return $this->hasOne('App\ServerHost', 'id');
}
public function system()
{
return $this->hasOne('App\System', 'id');
}
DomainHost, ServerHost, System model :
public function domains()
{
return $this->hasMany('App\Domain');
}
Domains table :
So far so good.
Let's take a look at what this particular table returns while being foreached.
The first 2 rows should be the same (basing on their IDs), and all rows after the first 2 are just empty.
(dd of the fetched data, notice the relations being empty at 4th object, 1st object actually has data).
Had to define another parameter when defining my relationships:
public function domain_host()
{
return $this->hasOne('App\DomainHost', 'id', 'domain_host_id');
}
public function server_host()
{
return $this->hasOne('App\ServerHost', 'id', 'server_host_id');
}
public function system()
{
return $this->hasOne('App\System', 'id', 'system_id');
}
It was looking for the ID of the current row in the other table.

When to use getXXAttribute vs a relationship in Laravel

I am putting together a model of mine and I am wondering what is the most relevent method to use for something like "author".
I have:
public function images() {
return $this->morphMany('App\Models\Image', 'imageable');
}
public function ratings() {
return $this->hasMany('App\Models\Rating');
}
public function favorited() {
return $this->hasMany('App\Models\Favorite');
}
public function author() {
return $this->hasOne('User');
}
public function getMyFavoriteAttribute() {
return $this->favorited->where('user_id', Auth::user()->id)->count();
}
public function getFavoritesAttribute() {
return $this->favorited->count();
}
public function getRatingAttribute() {
return $this->ratings->sum('rating');
}
I have created a relationship called author as seen above. When would it be preferred to create this as a getAuthorAttribute?
get__Attribute is only necessary if you want to manipulate the original value of the stored attribute. Due to the fact that Author is already accessible through your relation it's not necessary to add an additional getter.

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