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Overview

The Subject model provides simple CRUD operations for managing academic subjects. File: app/models/Subject.php

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Methods

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all

Retrieves all subjects from the database. SQL Query: 
SELECT * FROM subjects
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result
array
Returns array of all subject records
Example: 
$subject = new Subject();
$allSubjects = $subject->all();

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create

Creates a new subject.
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name
string
required
The name of the subject to create
SQL Query: 
INSERT INTO subjects (name) VALUES (?)
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result
void
No return value (throws exception on failure)
Example: 
$subject = new Subject();
$subject->create('Computer Science');

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delete

Deletes a subject by ID.
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id
int
required
Subject ID to delete
SQL Query: 
DELETE FROM subjects WHERE id = ?
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result
void
No return value (throws exception on failure)
Example: 
$subject = new Subject();
$subject->delete(5);
Deleting a subject that is referenced by courses may fail due to foreign key constraints.

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