public Models.Student fromDbModel(Models.Db.Student student,
Models.Db.Group group,
Models.Db.Faculty faculty)
{
return(new Models.Student()
{
id = student.id,
name = student.name,
group = this.fromDbModel(group, faculty),
state = student.state
});
}
public Models.Group fromDbModel(Models.Db.Group group,
Models.Db.Faculty faculty)
{
return(new Models.Group()
{
id = group.id,
name = group.name,
year = group.year,
type = group.type,
faculty = this.fromDbModel(faculty)
});
}
public async Task updateStudent(int id, Models.Student update)
{
Models.Db.Group dbGroup = await this.getDbGroup(name : update.group.name);
if (dbGroup == null)
{
throw new System.ArgumentException("invalid group");
}
this.Database.ExecuteSqlCommand(
"update student set name={0}, state={1}, group_id={2} where id={3}",
update.name, update.state, dbGroup.id, id);
}
public async Task insertStudent(Models.Student student)
{
Models.Db.Group dbGroup = await this.getDbGroup(name : student.group.name);
if (dbGroup == null)
{
throw new System.ArgumentException("invalid group");
}
this.Database.ExecuteSqlCommand(
"insert into student (name, state, group_id) values ({0}, {1}, {2})",
student.name, student.state, dbGroup.id);
}
public async Task <List <Models.Student> > getStudents(int groupId,
int count,
int offset)
{
Models.Db.Group dbGroup = await this.getDbGroup(id : groupId);
Models.Db.Faculty dbFaculty = await this.getDbFaculty(id : dbGroup.faculty_id);
List <Models.Db.Student> dbStudents = await this.student.FromSqlRaw(
$"select * from student where group_id={groupId} order by name asc limit {count} offset {offset}")
.ToListAsync();
List <Models.Student> students = new List <Models.Student>();
foreach (Models.Db.Student student in dbStudents)
{
students.Add(this.converter.fromDbModel(student, dbGroup, dbFaculty));
}
return(students);
}
