How to safely access other users and other model's records inside Blade template - laravel

I have 3 models in my app Users, Sales and Plans, when I render sales for each customer (due to storing) I only get id's for other users and models related to that sale (like account manager, owner, plan), now I'm trying to use those ID's inside blade to get names or other rows based on ID and model. Here is the show function:
public function show($id) {
$user = User::find($id);
$sales = Sale::where('customer_id', '=', $id)->get();
return view('profiles.customer', ['user' => $user, 'sales' => $sales]);
}
And in blade I get all those sales like:
#foreach ($sales as $sale)
<li>
<i class="fa fa-home bg-blue"></i>
<div class="timeline-item">
<span class="time"><i class="fa fa-clock-o"></i> {{$sale->created_at->format('g:ia, M jS Y')}}</span>
<h3 class="timeline-header">{{$user->name}} became a customer</h3>
<div class="timeline-body">
<p>Date: {{$sale->sold_date}}</p>
<p>Price: {{$sale->sale_price}}</p>
</div>
</div>
</li>
#endforeach
So inside each record I have like "account_manager_id", "agent_id", "owner_id", "plan_id".
Currently I have this solved by adding public static function (this is for users, have same function for Plan model as well) in Sale model class:
public static function getUser($id) {
return User::where('id', $id)->first();
}
And I'm using it like this in Blade:
Account manager: {{$sale->getUser($sale->account_mgr_id)->name}}
Is this the safest and best way to do it? Or there is something I'm overlooking here?

You need to add relationships in your Sales Model.
class Sales extends Eloquent {
.....
.....
public function accountManager() {
return $this->hasMany('App\User', 'account_manager_id');
}
public function agents() {
return $this->hasMany('App\User', 'agent_id');
}
public function owner() {
return $this->hasOne('App\User', 'owner_id');
}
}
Now $sales->agents will give you a user with agent_id as id in User table.
Update your hasOne, hasMany relationships as your need. Laravel Documentation.
From your blade template, your access your AccountManager as
#foreach($sales->accountManager as $manager)
Name: {{ $manager->name}}
#endforeach

I think you could use Eloquent relationships. Taking your example, you should define relationship in your User model:
<?php
class User extends Eloquent {
public function sales() {
return $this->hasMany(Sale::class, 'customer_id');
}
}
Then, whenever you need to get sales of that user (entries, that relate via customer_id column), just simply do
<?php
$user = User::find($id);
$sales = $user->sales;
This is very fun when when you have to print out list of users that have sales, for example
<?php
public function showUsersWithSales() {
$users = User::with('sales')->get();
return view('users-with-sales', compact('users'));
}
users-with-sales.blade.php example:
#foreach ($users as $user)
User: {{ $user->name }}<br>
Sales:<br>
#foreach ($user->sales as $sale)
{{ $sale->amount }} {{ $sale->currency }} # {{ $sale->created_at }}<br>
#endforeach
<hr>
#endforeach
It would print all users with their sale amount and currency, followed by date when it was created.
This sample takes into account, that your User model has name attribute and your Sale model has amount, currency, created_at and customer_id fields in your database.
To reverse the action, say you have a sale and want to know who made it, just simply define a relationship!
<?php
class Sale extends Eloquent {
public function customer() {
return $this->belongsTo(User::class, 'customer_id');
}
}
Hope that helps!

Eloquent Relationship is your friend, https://laravel.com/docs/5.2/eloquent-relationships and you can solve your problem easily.
Suggestion is to remove all those function access and control from view and put it somewhere else. This will be good habit for you so you can avoid the infamous fat view.

Related

How to get information from 3 separate tables in Laravel

I have a table called users that stores user information and each user can have multiple business accounts that are stored in separate tables.
Models:
User:
id
name
UserProviderAccount:
id
user_id
bussiness_name
bussiness_tell
bussiness_address
UserCompanyAccount
id
user_id
company_name
company_size
UserInfluencerAccount:
id
user_id
name
website
follower_count
Tables Relations :
User :
public function providers(): HasMany
{
return $this->hasMany(UserProviderAccount::class);
}
public function companies(): HasMany
{
return $this->hasMany(UserCompanyAccount::class);
}
public function influencers(): HasMany
{
return $this->hasMany(UserInfluencerAccount::class);
}
I want to display the user's business accounts of all three types at once.
How do I do this?
You simply need to load and call the relationships as follows:
UserController: sample controller and function
public function show(User $user){
//Here we will load all of the relationships for the specific user
$user->load('providers', 'companies', 'influencers');
//Assign the providers from user->providers
$providers = $user->providers;
//Assign the companies from user->companies
$companies = $user->companies;
//Assign the influencers from user->influencers
$influencers = $user->influencers;
//Send all of the data to the view
return view('users.show', compact('user', 'providers', 'companies', 'influencers'));
}
users.show View: simplified version to show you concept.
<p>{{$user->name}}</p>
<p>The providers:</p>
<ul>
#foreach($providers as $provider)
<li>{{$provider->bussiness_name}}</li>
<li>{{$provider->bussiness_tell}}</li>
<li>{{$provider->bussiness_address}}</li>
#endforeach
</ul>
<p>The companies:</p>
<ul>
#foreach($companies as $company)
<li>{{$company->company_name}}</li>
<li>{{$company->company_size}}</li>
#endforeach
</ul>
<p>The influencers:</p>
<ul>
#foreach($influencers as $influencer)
<li>{{$influencer->name}}</li>
<li>{{$influencer->website}}</li>
<li>{{$influencer->follower_count}}</li>
#endforeach
</ul>

Building complex Eloquent query using belongsToMany relationship, foreign table and whereIn()

In a Laravel 5 app, I have 5 tables - users, books, authors, followers and activity_feeds.
Users can follow authors and a book can have several authors.
When a book is made, an activity_feeds entry is made that references the book_id.
I need to build an eloquent query to get a collection of activity_feeds for each users, to iterate over in their home page activity feed.
My Book model includes
public function authors()
{
return $this->belongsToMany('App\Author')->withTimestamps();
}
The activity_stream table looks like this (with example data)
id (1)
user_id (3)
type (New Book)
book_id (18)
created_at etc
and my User controller includes
public function feedItems()
{
return $this->hasMany('App\ActivityFeed');
}
public function userFollowings()
{
return $this->belongsToMany('App\User', 'followers', 'follower_id', 'subject_id')->withTimestamps();
}
public function authorFollowings()
{
return $this->belongsToMany('App\Author', 'followers', 'follower_id', 'author_id')->withTimestamps();
}
My current query (which isn't working), contained in the User model is
public function getactivityFeedsAttribute()
{
$userFollowings = $this->userFollowings()->pluck('subject_id')->toArray();
$authorFollowings = $this->authorFollowings()->pluck('author_id')->toArray();
$userFeeds = ActivityFeed::whereIn('user_id', $userFollowings)
->orwhereIn('book_id', function($query){
$query->select('id')
->from(with(new Book)->getTable())
->whereHas->authors()
->whereIn('id', $authorFollowings);
})
->get();
return $userFeeds;
}
$userFollowings and $authorFollowings are working fine.
I'm not sure I'm using the correct syntax for data[book_id] to pluck the book id from the activity_feeds row, and I'm really not sure if I can nest a table look up or use $query like this.
It also seems VERY complicated. Am I might be missing something much more straight forward?
In the blade I am calling like this
#forelse ($user->activityFeeds as $activityFeed)
<div class="row">
<div class="col-2">
{{ $activityFeed->user->firstname }}
</div>
<div class="col-2">
{{ $activityFeed->type }}
</div>
</div>
<hr>
#empty
No activity yet
#endforelse
Which works if I just query 'ActivityFeed::whereIn('user_id', $userFollowings)'
I'll rewrite the query in an answer because comments aren't very legible.
public function getactivityFeedsAttribute()
{
$userFollowings = $this->userFollowings()->pluck('subject_id')->toArray();
$authorFollowings = $this->authorFollowings()->pluck('author_id')->toArray();
$books = Book::whereHas('authors', function ($query) use ($authorFollowings) {
// Have to be explicit about which id we're talking about
// or else it's gonna throw an error because it's ambiguous
$query->whereIn('authors.id', $authorFollowings);
})->pluck('id')->toArray();
$userFeeds = ActivityFeed::whereIn('user_id', $userFollowings)
->orwhereIn('book_id', $books)
->get();
return $userFeeds;
}

laravel 5.7 many to many with custome table name

Goods Model
class goods extends Model
{
protected $table = "goods";
public function sales(){
return $this->belongsToMany('App\sales', 'sales_details', 'goods', 'sales');
}
}
Sales Model
class sales extends Model
{
protected $table = "sales";
public function goods(){
return $this->belongsToMany('App\goods','sales_details','sales','goods');
}
}
i also make this model but i don't know if i ever need it or not
class salesDetail extends Model
{
protected $table = "sales_details";
}
my controller
public function test()
{
$goods = goods::all();
return view('test',compact('goods'));
}
my test.blade.php
#foreach($goods as $data)
<li><strong>{{ $data->name }}</strong> - {{ $data->company->kind }} {{ $data->company->name }}</li>
<p>{{ $goods->sales }}</p>
#endforeach
i connect goods table with sales table with many to many without following laravel naming.
This is my table contents
goods
-id
-name
sales
-id
-date
sales_details
-goods
-sales
-qty
-price
and i couldn't make it work. i just wanted to show the result like this
sales -id
sales - date
goods - name
sales_details - qty
sales_details - price
this should be the result
In your #foreach loop you're trying to access sales on the collection of goods rather than the instance in the loop. Also, because the sales() relationship is a belongsToMany (many-to-many) you're going to get a collection and not a single instance so you're going to need to loop through them as well e.g.
#foreach($goods as $data)
<li>
<strong>{{ $data->name }}</strong> - {{ $data->company->kind }} {{ $data->company->name }}
#foreach($data->sales as $sale)
<p>{{ $sale->date }} - {{ $sale->pivot->qty }}</p>
#endforeach
</li>
#endforeach
To access data from your pivot table you will first need to tell Laravel to include that information in the relationship:
public function sales()
{
return $this->belongsToMany('App\sales', 'sales_details', 'goods', 'sales')
->withPivot('qty', 'price');
}
You should also add the withPivot method to the good() relationship in the sales class as well.
Then you'll be able access the information from the pivot property. This is happening in the example above with {{ $sale->pivot->qty }}.
Many to many docs (scroll down to Retrieving Intermediate Table Columns )

Laravel: Passing data to view through route after querying

I recently asked a question about defining many to many relationships (using belongsToMany) and it was a huge help. So now in my models I have:
Users model
public function subjects()
{
return $this->belongsToMany('App\Subject', 'users_subjects', 'user_id', 'subjects_id');
}
Subjects model
public function users()
{
return $this->belongsToMany('App\User', 'users_subjects', 'subject_id', 'user_id');
}
This way I establish a relationship between users and subjects via the users_subjects table. My next step was to create a controller, SubjectsController, which ended up looking like this:
class SubjectsController extends Controller
{
// returns the view where subjects will be displayed
public function index()
{
return view('profiles.professor.prof_didactic_subjects');
}
// get users with subjects
public function getSubjects()
{
$subjects = User::with('subjects')->get();
}
// get a single user with a subject
public function getSubject($id)
{
$materia = User::where('id', '=', $id)->with('subjects')->first();
}
}
I'm not very sure about the code in the controller though.
The final step is where it gets tricky for me, even after reading the docs: I want to pass each result to the view, so I can have multiple tiles, each populated with data from subjects the user is associated with:
#foreach ($subjects as $subject)
<div class="tile is-parent">
<article class="tile is-child box">
<p class="title">{{ $subject['name'] }}</p>
<div class="content">
<p>{{ $subject['description'] }}</p>
</div>
</article>
</div>
#endforeach
I tried many different route configurations, but kept getting either the undefined variable error or trying to access non-object error.
What's the proper course of action here? I feel I'm missing something very basic. Thanks in advance for any help.
The answer
The solution provided below by #Sohel0415 worked perfectly. My index() method on the controller now looks like this:
public function index()
{
// temporary value while I figure out how to get the id of the current user
$user_id = 6;
$subjects = Subject::whereHas('users', function($q) use ($user_id){
$q->where('user_id', $user_id);
})->get();
return view('profiles.professor.prof_didactic_subjects')->with('subjects', $subjects);
}
My route looks like this:
Route::get('/professor', 'SubjectsController#index');
I was pretty lost, so this absolutely saved me, thanks again :)
You need to pass $subjects to your view. You can use compact() method for that like -
public function index()
{
$subjects = Subject::with('users')->get();
return view('profiles.professor.prof_didactic_subjects', compact('subjects'));
}
Or using with() method like -
public function index()
{
$subjects = Subject::with('users')->get();
return view('profiles.professor.prof_didactic_subjects')->with('subjects', $subjects);
}
If you want to get Subject for a particular user_id, use whereHas() -
$subjects = Subject::whereHas('users', function($q) use ($user_id){
$q->where('user_id', $user_id);
})->get();

accessing collections within collections laravel 5

I have a table of "rosters" that's pretty much strictly foreign keys. It acceses the "schools" table, "courses" table, and "students" table. So essentially, a 'student' takes a 'course' at a 'school'. My RostersController has this
public function show($id)
{
$roster = Roster::where('course_id', $id);
return view('roster')->with('roster', $roster);
}
My Roster Model is:
public function students()
{
return $this->hasMany('App\Student');
}
My student Model is:
public function roster()
{
return $this->belongsTo('App\Roster');
}
my view is this:
#foreach ($roster as $child)
<p>{{$child->id}}</p>
<p>{{$child->students->first_name}}</p>
#endforeach
The rosters table just saves the student_id rather than all of the student's data that is already in the 'students' table. So i'm trying to access the students table from this relation but when i run this, it tells me that anything related to the students table is 'not on this collection'. I know that I could do things this way if i was working with a hasOne relationship, but how can i accomplish this with a hasMany to output the students table value in each row?
You should try this
public function show($id)
{
$roster = Roster::with('students')->where('course_id', $id);
return view('roster')->with('roster', $roster);
}
Try this
Roster.php
public function show($id)
{
$roster = Roster::with('students')->where('course_id', $id)->get(); // load the students
return view('roster')->with('roster', $roster);
}
On the view
#foreach ($roster as $child)
<p>{{$child->id}}</p>
<p>
<!-- Loop through the stundents since this returns an collection of students and not just one -->
#foreach($child->students as $student)
{{$student->first_name}} <br>
#endforeach
</p>
#endforeach
Check this for more information on eager loading
The $child->students is a collection. So, you need to use another foreach loop inside the first one.
Your code should look like this:
#foreach ($roster as $child)
<p>{{$child->id}}</p>
#foreach($child->students as $student)
<p>{{$student->first_name}}</p>
<p>{{$student->age}}</p>
<p>{{$sutdent->another_column_in_students_table}}</p>
#endforeach
<p>{{$child->any_other_column_in_roster_table_if_needed}}</p>
#endforeach
So, your first issue is, that
$roster = Roster::where('course_id', $id);
will just return a QueryBuilder instance, you have to use
$roster = Roster::where('course_id', $id)->get();
then for sure, students is a collection, you have to iterate over it like this:
#foreach ($child->students as $student)
{{ $student->yourProperty}} <br>
#endforeach
Update:
I saw you know already about that when to use get() in query laravel 5

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