Cant seem to figure out the probleme here, getting error - Trying to get property 'name' of non-object
User DB
Schema::create('users', function (Blueprint $table) {
$table->increments('id');
$table->string('name');
$table->string('lastname');
$table->string('email')->unique();
$table->string('password');
$table->integer('phone');
$table->boolean('isAdmin')->default(0);
$table->rememberToken();
$table->timestamps();
});
Sludinajums DB
Schema::create('sludinajums', function (Blueprint $table) {
$table->increments('id');
$table->string('logo');
$table->string('nosaukums');
$table->string('regnr');
$table->string('text');
$table->string('atrasanasVieta');
$table->string('adrese');
$table->integer('telefons');
$table->string('epasts');
$table->integer('profesija_id')->unsigned();
$table->foreign('profesija_id')->references('id')->on('profesijas')->onDelete('cascade');
$table->integer('lietotajs_id')->unsigned();
$table->foreign('lietotajs_id')->references('id')->on('users')->onDelete('cascade');
$table->timestamps();
});
User model function
public function sludinajums()
{
return $this->hasOne(sludinajums::class,'lietotajs_id');
}
Sludinajums model function
public function user()
{
return $this->belongsTo('App\User');
}
Here is my controller function
public function sludinajuma_skats($id){
$slud = sludinajums::where('id',$id)->with('user')->get();
return view('views.sludinajums', compact('slud'));
}
And in my view im trying to access name attribute from User table.
{{dd($sl->user->name)}}
try this for Sludinajums model function
public function user()
{
return $this->hasMany('App\User','lietotajs_id');
}
Related
Hello I am learning relationship many to many I read the official documentation and use the conventions,
but I can't make the relation many to many I get the error that the property does not exist.
how can I solve that?
Migrations
Schema::create('role_user', function (Blueprint $table) {
$table->id();
$table->foreignId('user_id')->constrained()->onUpdate('cascade')->onDelete('cascade');
$table->foreignId('role_id')->constrained()->onUpdate('cascade')->onDelete('cascade');
$table->timestamps();
});
}
User
Schema::create('users', function (Blueprint $table) {
$table->id();
$table->string('name');
$table->string('email')->unique();
$table->timestamp('email_verified_at')->nullable();
$table->string('password');
$table->rememberToken();
$table->timestamps();
});
}
Roles
Schema::create('roles', function (Blueprint $table) {
$table->id();
$table->string('name');
$table->timestamps();
});
Models:
User
public function roles(){
return $this->belongsToMany(role::class, 'role_user', 'user_id', 'role_id');
}
Role
public function users(){
return $this->belongsToMany(User::class, 'role_user','role_id','user_id');
}
query:
$v = User::get();
dd($v->roles);
$v = User::get(); returns a collection of users. If you get one user, for example, User::find(1) you will have access to the roles for this specific user.
Another option is
$users = User::with('roles')->get();
foreach ($users as $user) {
$userRoles = $user->roles;
}
in my model user
public function blogs(){
return $this->hasMany('App\Blog');
}
in my model blog
public function user(){
return $this->belongsTo('App\User','user_id');
}
in my BlogController
public function show($id)
{
$blog = Blog::find($id);
dd($blog->user->name);
return view('admin.pages.blogs.show',compact('blog'));
}
database table user ( id,role_id,name)
if role_id = 1(admin) then result $blog->user->name is null
if role_id = 2(author) then result $blog->user->name is name of user
how can i fix when role_id = 1
You need to remove user_id from Blog model.
public function user()
{
return $this->belongsTo(User::class);
}
UPD. In any case role_id does not matter. So you need to make sure DB contains related records. For example:
blogs:
id user_id text
1 123 '...'
users:
id name
123 'Linh'
First of all you change blogs users and roles migration.
blogs migration
Schema::create('blogs', function (Blueprint $table) {
$table->bigIncrements('id');
$table->unsignedBigInteger('user_id');
$table->foreign('user_id')->references('id')->on('users');
$table->string('title');
$table->string('slug')->unique();
$table->string('image');
$table->string('body');
$table->tinyInteger('status')->default(0);
$table->tinyInteger('is_approved')->default(0);
$table->integer('view_count')->default(0);
$table->timestamps();
});
users migration
Schema::create('users', function (Blueprint $table) {
$table->bigIncrements('id');
$table->unsignedBigInteger('role_id')->default(2);
$table->foreign('role_id')->references('id')->on('roles');
$table->string('name');
$table->string('username')->unique();
$table->string('email')->unique();
$table->string('password');
$table->string('image')->default('default.png');
$table->text('about')->nullable();
$table->rememberToken();
$table->timestamps();
});
roles migration
Schema::create('roles', function (Blueprint $table) {
$table->bigIncrements('id');
$table->string('name');
$table->string('slug')->unique();
$table->timestamps();
});
User model
public function blogs(){
return $this->hasMany('App\Blog');
}
Blog model
public function user(){
return $this->belongsTo('App\User');
}
BlogController
public function show($id)
{
$blog = Blog::find($id);
dd($blog->user->name);//check
return view('admin.pages.blogs.show',compact('blog'));
}
Hey guys so I'm using spatie binary uuid package and I had few doubts
Things done so far:
User.php Migration:
public function up()
{
Schema::create('users', function (Blueprint $table) {
$table->uuid('uuid');
$table->primary('uuid');
$table->string('name');
$table->string('email')->unique();
$table->string('password');
$table->rememberToken();
$table->timestamps();
});
}
Role migration just have basic field called "name" with timestamps
Pivot table: role_user
public function up()
{
Schema::create('role_user', function (Blueprint $table) {
$table->increments('id');
$table->integer('role_id')->unsigned()->nullable()->index();
$table->uuid('user_uuid');
});
}
I know this is terribly wrong and I don't know what to do, I'm trying to save the Role model via this call
$uuid = '478d7068-ae64-11e8-a665-2c600cf6267b';
$model = User::withUuid($uuid)->first();
$model->roles()->save(new Role(['name' => 'Admin']));
it doesn't work, where am I going wrong? I think it has something to do with role_user migration
User.php
public function roles()
{
return $this->belongsToMany(Role::class);
}
try this, pivot migration:
public function up()
{
Schema::create('role_user', function (Blueprint $table) {
$table->increments('id');
$table->integer('role_id')->unsigned()->nullable()->index();
$table->foreign('role_id')->references('id')->on('roles')->onDelete('cascade');
$table->uuid('user_uuid');
$table->foreign('user_uuid')->references('uuid')->on('users')->onDelete('cascade');
});
}
roles relation:
public function roles(){
return $this->belongsToMany(Role::class,'role_user','user_uuid','role_id');
}
please let me know if it didn't work
you should edit your relation to this
return $this->belongsToMany(Role::class,'role_user','user_uuid','role_id');
if you say about your error we better can help you
I have two models Post and Category
// migration post
public function up()
{
Schema::create('posts', function (Blueprint $table) {
$table->increments('id');
$table->string('title');
$table->string('body');
$table->string('image');
$table->integer('category_id')->unsigned();
$table->foreign('category_id')->references('id')->on('categories');
$table->timestamps();
});
}
// migration category
public function up()
{
Schema::create('categories', function (Blueprint $table) {
$table->increments('id');
$table->string('name');
$table->timestamps();
});
}
How can I display only the last post from each category in home page?
Hiren was close, but you need to go from the category since your post is owned by the category
$category->posts()->latest()->first();
Alternatively you could work backwards:
$post = Post::latest()->whereHas('category', function($q) use($category_id) {
return $q->where('id', $category_id);
})->first();
For this to work you'll need to define your model relationships:
Category Model needs this function:
public function posts()
{
return $this->hasMany(App\Post::class);
}
Post Model needs this function:
public function category()
{
return $this->belongsTo(App\Category::class);
}
To respond to Alexey Mezenin, we can just pass a callback to with() to define which posts we want to pull in for each category, performing the correct eager load.
Category::with(['posts' => function($q) {
return $q->latest()->first();
})->get();
An Eloquent solution for loading categories with latest post is to create an additional hasOne() relationship in the Category model:
public function latestPost()
{
return $this->hasOne(Post::class)->latest();
}
And then use eager loading:
Category::with('latestPost')->get();
This will generate just 2 queries to DB.
public function up()
{
Schema::create('news', function (Blueprint $table) {
$table->increments('id');
$table->string('slug')->unique();
$table->unsignedInteger('author_id');
$table->unsignedInteger('category_id');
$table->string('subject');
$table->text('short');
$table->text('content');
$table->integer('view')->default(0);
$table->integer('status')->default(0);
$table->string('image');
$table->timestamps();
$table->foreign('author_id')
->references('id')->on('users')
->onDelete('cascade');
// $table->foreign('category_id')
// ->references('id')->on('categories')
// ->onDelete('cascade');
});
// Schema::enableForeignKeyConstraints();
}
public function up()
{
Schema::create('categories', function (Blueprint $table) {
$table->increments('id');
$table->string('name')->unique();
$table->timestamps();
});
}
in contoller:
$latestpostlist = News::whereIn('created_at',function($query){
$query->select(DB::raw('max(created_at)'))
->from('news')
->groupBy('category_id');
})->get();
in your case news will be post. this query worked for me
I have three models that are related. First I have User that belongs to a Role. On the other hand, Role has many roles. Role belongs to many permissions and Permissions belongs to many Role. I am using the AuthServiceProvider as suggested by jeffrey way of laracast. But the problem now, when I want to fetch all the permissions of a User I am having error which is, "Call to a member function getKey() on boolean". Can someone please help me on this. Please refer to the codes below.
User.php
public function role()
{
return $this->belongsTo('App\Role');
}
public function assignRole($role)
{
return $this->roles()->save(
Role::whereName($role)->firstOrFail()
);
}
public function hasRole($role)
{
if(is_string($role)){
return $this->role->contains('name', $role);
}
return !! $role->intersect($this->role)->count();
}
Role.php
class Role extends Model
{
public function users()
{
return $this->hasMany('App\User');
}
public function permissions()
{
return $this->belongsToMany('App\Permission');
}
public function givePermissions(Permission $permission)
{
return $this->permissions()->save($permission);
}
}
Permission.php
class Permission extends Model
{
public function roles()
{
return $this->belongsToMany('App\Role');
}
}
AuthServiceProvider
public function boot(GateContract $gate)
{
$this->registerPolicies($gate);
//get all permissions
foreach ($this->getPermissionTo() as $permission ) {
$gate->define($permission->name, function($user) use ($permission){
return $user->hasRole($permission->roles);
});
}
}
public function getPermissionTo()
{
return Permission::with('roles')->get();
}
and lastly, heres the user table that has a foreign key of role_id
Schema::create('users', function (Blueprint $table) {
$table->increments('id');
$table->integer('role_id')->unsigned();
$table->string('id_no')->unique()->index();
$table->string('u_first_name');
$table->string('u_middle_name');
$table->string('u_last_name');
$table->string('email')->unique();
$table->string('password');
$table->rememberToken();
$table->timestamps();
});
roles table
Schema::create('roles', function (Blueprint $table) {
$table->increments('id');
$table->string('name');
$table->string('label')->nullable();
$table->timestamps();
});
permissions table
Schema::create('permissions', function (Blueprint $table) {
$table->increments('id');
$table->string('name');
$table->string('label')->nullable();
$table->timestamps();
});
permission_role table
Schema::create('permission_role', function (Blueprint $table) {
$table->integer('permission_id')->unsigned();
$table->integer('role_id')->unsigned();
$table->foreign('permission_id')
->references('id')
->on('permissions')
->onDelete('cascade');
$table->foreign('role_id')
->references('id')
->on('roles')
->onDelete('cascade');
$table->primary(['permission_id', 'role_id']);
});
In the line: return !! $role->intersect($this->role)->count();, the part that says $this->role is probably not returning a collection, which is why you're getting this error. In Collection.php there's a method that iterates through all the items in a collection you send through the intersection method that gets the primary key of it. Because you're not sending a collection to the intersect() method, it tries to use the method getKey() in a boolean. Try:
return !! $role->intersect($this->role->get())->count();