I deleted a category which is an f-key of the items table. Now the view has an error saying 'Attempt to read property "category_name" on null'. How do I render a null foreign key? I tried if-else: @if({{$item->category->category_name}} === 'null')…
I can't delete a category because it is a foreign key in the items table. How can I do it? How can I make a deletion in category and make $category_id null in the items table? I tried making a…
I am trying to understand the syntaxes for defining tables and I noticed that the column definitions include an option to indiciate that the column references a column from another table. If I can already define this here, do I…
I'm trying to create foreign keys in Laravel however when I migrate my table using artisan i am thrown the following error: SQLSTATE[HY000]: General error: 1005 Can't create table `bright`.`carts` (errno: 150 "Foreign key constraint is incorrectly formed") (SQL: alter…
I want to get department_name from department table with table department = id, department_name, total_employee table employee = id, employee_name, id_department, email, telephone, gender, status I tried model.Employee public function department() { return $this->belongsTo(Department::class); } controllers.EmployeeControllers public function index() {…
I'm doing a project using ASP.NET Core MVC. I created my models and when I update the migration I got this error. Introducing FOREIGN KEY constraint 'FK_Branch_Countries_CountriesId' on table 'Branch' may cause cycles or multiple cascade paths. Specify ON DELETE…
I have a one to many relation with Postgres. The primary key entity LUT is dependent on its child entities. I am looking for a way to cascade changes in the foreign key entities to the primary entity and update…
I'm attempting to create a table in a relational database that has a foreign key and a SQL syntax error consistently occurs. I am using PHP and mySQL (i've removed any non interacting tables that only hold data and don't…
Hello dear Stackoverflow users, I'm working on a database to add to my project. But I'm having struggles figuring out properly making relations in MySQL using PHPmyadmin. I have written the following: CREATE TABLE Orders ( OrderID int(255) NOT NULL,…
I've built my first ever simple MySQL DB with the myPhpAdmin interface. 1st users table: id (PK), email, fname, lname, isConsultant [bool]... 2nd consultants table: id (PK), title, bio... 3rd table linking both (some users are consultants, some are not):…