public async Task CreateAsync(
string title,
string content,
string authorId)
{
var article = new Article
{
Title = title,
Content = content,
PublishDate = DateTime.UtcNow,
AuthorId = authorId
};
db.Add(article);
await db.SaveChangesAsync();
}
public async Task Create(
string name,
string description,
DateTime startDate,
DateTime endDate,
string trainerId)
{
var course = new Course
{
Name = name,
Description = description,
StartDate = startDate,
EndDate = endDate,
TrainerId = trainerId
};
db.Add(course);
await db.SaveChangesAsync();
}
public async Task <bool> SignUpStudentAsync(int courseId, string studentId)
{
var courseInfo = await GetCourseInfo(courseId, studentId);
if (courseInfo is null ||
courseInfo.StartDate < DateTime.UtcNow ||
courseInfo.UserIsEnrolledInCourse)
{
return(false);
}
var studentInCourse = new StudentCourse
{
CourseId = courseId,
StudentId = studentId
};
db.Add(studentInCourse);
await db.SaveChangesAsync();
return(true);
}