public IHttpActionResult PutEnrollment(int id, Enrollment enrollment)
{
if (!ModelState.IsValid)
{
return(BadRequest(ModelState));
}
if (id != enrollment.EnrollmentID)
{
return(BadRequest());
}
db.Entry(enrollment).State = EntityState.Modified;
try
{
db.SaveChanges();
}
catch (DbUpdateConcurrencyException)
{
if (!EnrollmentExists(id))
{
return(NotFound());
}
else
{
throw;
}
}
return(StatusCode(HttpStatusCode.NoContent));
}
public IHttpActionResult PutCourse(int id, Course course)
{
if (!ModelState.IsValid)
{
return(BadRequest(ModelState));
}
if (id != course.CourseID)
{
return(BadRequest());
}
db.Entry(course).State = EntityState.Modified;
try
{
db.SaveChanges();
}
catch (DbUpdateConcurrencyException)
{
if (!CourseExists(id))
{
return(NotFound());
}
else
{
throw;
}
}
return(StatusCode(HttpStatusCode.NoContent));
}
public ActionResult Create([Bind(Include = "ID,LastName,FirstMidName,EnrollmentDate")] Student student)
{
if (ModelState.IsValid)
{
db.Students.Add(student);
db.SaveChanges();
return(RedirectToAction("Index"));
}
return(View(student));
}
public ActionResult Create([Bind(Include = "CourseID,Title,Credits")] Course course)
{
if (ModelState.IsValid)
{
db.Courses.Add(course);
db.SaveChanges();
return(RedirectToAction("Index"));
}
return(View(course));
}
public ActionResult Create([Bind(Include = "EnrollmentID,CourseID,StudentID,Grade")] Enrollment enrollment)
{
if (ModelState.IsValid)
{
db.Enrollments.Add(enrollment);
db.SaveChanges();
return(RedirectToAction("Index"));
}
ViewBag.CourseID = new SelectList(db.Courses, "CourseID", "Title", enrollment.CourseID);
ViewBag.StudentID = new SelectList(db.Students, "ID", "LastName", enrollment.StudentID);
return(View(enrollment));
}
protected override void Seed(DbExemploContext context)
{
// This method will be called after migrating to the latest version.
// You can use the DbSet<T>.AddOrUpdate() helper extension method
// to avoid creating duplicate seed data. E.g.
//
// context.People.AddOrUpdate(
// p => p.FullName,
// new Person { FullName = "Andrew Peters" },
// new Person { FullName = "Brice Lambson" },
// new Person { FullName = "Rowan Miller" }
// );
//
var students = new List <Student>
{
new Student {
FirstMidName = "Carson", LastName = "Alexander", EnrollmentDate = DateTime.Parse("2005-09-01")
},
new Student {
FirstMidName = "Meredith", LastName = "Alonso", EnrollmentDate = DateTime.Parse("2002-09-01")
},
new Student {
FirstMidName = "Arturo", LastName = "Anand", EnrollmentDate = DateTime.Parse("2003-09-01")
},
new Student {
FirstMidName = "Gytis", LastName = "Barzdukas", EnrollmentDate = DateTime.Parse("2002-09-01")
},
new Student {
FirstMidName = "Yan", LastName = "Li", EnrollmentDate = DateTime.Parse("2002-09-01")
},
new Student {
FirstMidName = "Peggy", LastName = "Justice", EnrollmentDate = DateTime.Parse("2001-09-01")
},
new Student {
FirstMidName = "Laura", LastName = "Norman", EnrollmentDate = DateTime.Parse("2003-09-01")
},
new Student {
FirstMidName = "Nino", LastName = "Olivetto", EnrollmentDate = DateTime.Parse("2005-09-01")
}
};
students.ForEach(s => context.Students.Add(s));
context.SaveChanges();
var courses = new List <Course>
{
new Course {
CourseID = 1050, Title = "Chemistry", Credits = 3,
},
new Course {
CourseID = 4022, Title = "Microeconomics", Credits = 3,
},
new Course {
CourseID = 4041, Title = "Macroeconomics", Credits = 3,
},
new Course {
CourseID = 1045, Title = "Calculus", Credits = 4,
},
new Course {
CourseID = 3141, Title = "Trigonometry", Credits = 4,
},
new Course {
CourseID = 2021, Title = "Composition", Credits = 3,
},
new Course {
CourseID = 2042, Title = "Literature", Credits = 4,
}
};
courses.ForEach(s => context.Courses.AddOrUpdate(p => p.Title, s));
context.SaveChanges();
var enrollments = new List <Enrollment>
{
new Enrollment {
StudentID = students.Single(s => s.LastName == "Alexander").ID,
CourseID = courses.Single(c => c.Title == "Chemistry").CourseID,
Grade = Grade.A
},
new Enrollment {
StudentID = students.Single(s => s.LastName == "Alexander").ID,
CourseID = courses.Single(c => c.Title == "Microeconomics").CourseID,
Grade = Grade.C
},
new Enrollment {
StudentID = students.Single(s => s.LastName == "Alexander").ID,
CourseID = courses.Single(c => c.Title == "Macroeconomics").CourseID,
Grade = Grade.B
},
new Enrollment {
StudentID = students.Single(s => s.LastName == "Alonso").ID,
CourseID = courses.Single(c => c.Title == "Calculus").CourseID,
Grade = Grade.B
},
new Enrollment {
StudentID = students.Single(s => s.LastName == "Alonso").ID,
CourseID = courses.Single(c => c.Title == "Trigonometry").CourseID,
Grade = Grade.B
},
new Enrollment {
StudentID = students.Single(s => s.LastName == "Alonso").ID,
CourseID = courses.Single(c => c.Title == "Composition").CourseID,
Grade = Grade.B
},
new Enrollment {
StudentID = students.Single(s => s.LastName == "Anand").ID,
CourseID = courses.Single(c => c.Title == "Chemistry").CourseID
},
new Enrollment {
StudentID = students.Single(s => s.LastName == "Anand").ID,
CourseID = courses.Single(c => c.Title == "Microeconomics").CourseID,
Grade = Grade.B
},
new Enrollment {
StudentID = students.Single(s => s.LastName == "Barzdukas").ID,
CourseID = courses.Single(c => c.Title == "Chemistry").CourseID,
Grade = Grade.B
},
new Enrollment {
StudentID = students.Single(s => s.LastName == "Li").ID,
CourseID = courses.Single(c => c.Title == "Composition").CourseID,
Grade = Grade.B
},
new Enrollment {
StudentID = students.Single(s => s.LastName == "Justice").ID,
CourseID = courses.Single(c => c.Title == "Literature").CourseID,
Grade = Grade.B
}
};
foreach (Enrollment e in enrollments)
{
var enrollmentInDataBase = context.Enrollments.Where(
s =>
s.Student.ID == e.StudentID &&
s.Course.CourseID == e.CourseID).SingleOrDefault();
if (enrollmentInDataBase == null)
{
context.Enrollments.Add(e);
}
}
context.SaveChanges();
}