/*
* Pre:
* Post: Get teachers based on selected district
*/
private void updateTeacherDropdown()
{
ddlTeacher.DataSource = null;
ddlTeacher.DataBind();
if (ddlDistrictSearch.SelectedIndex > 0 && !HighestPermissionTeacher())
{
int districtId = Convert.ToInt32(ddlDistrictSearch.SelectedValue);
DataTable table = DbInterfaceContact.GetTeachersFromDistrict(districtId);
if (table != null)
{
ddlTeacher.DataSource = null;
ddlTeacher.DataBind();
ddlTeacher.Items.Clear();
//add empty item
ddlTeacher.Items.Add(new ListItem("", ""));
//add teachers from district
ddlTeacher.DataSource = table;
ddlTeacher.DataTextField = "ComboName";
ddlTeacher.DataValueField = "ContactId";
ddlTeacher.DataBind();
}
else
{
showErrorMessage("Error: The teachers for the selected district could not be retrieved.");
}
}
}
/*
* Pre:
* Post: If the current user is a teacher they can only add/edit their own students.
* If the current user is a district administrator they can only add/edit students
* in their district
*/
private void filterDistrictsAndTeachers()
{
//filter available districts and teachers based on user role
User user = (User)Session[Utility.userRole];
//if the user is a teacher, only allow students to be added to their district and assigned to themselves
if (user.permissionLevel.Contains('T') && !(user.permissionLevel.Contains('A') || user.permissionLevel.Contains('S') ||
user.permissionLevel.Contains('D')))
{
//only show current teacher's district
cboDistrict.DataBind();
ListItem item = cboDistrict.Items.FindByValue(user.districtId.ToString());
cboDistrict.Items.Clear();
cboDistrict.Items.Add(item);
//only show current teacher in teacher dropdown
cboCurrTeacher.DataBind();
item = cboCurrTeacher.Items.FindByValue(user.contactId.ToString());
cboCurrTeacher.Items.Clear();
cboCurrTeacher.Items.Add(item);
}
//if the user is a district admin, allow them to add students to their district to and assign them to a teacher in their district
else if (user.permissionLevel.Contains('D') && !(user.permissionLevel.Contains('A') || user.permissionLevel.Contains('S')))
{
//only show current user's district
cboDistrict.DataBind();
ListItem item = cboDistrict.Items.FindByValue(user.districtId.ToString());
cboDistrict.Items.Clear();
cboDistrict.Items.Add(item);
//only show teachers in the current user's district
DataTable table = DbInterfaceContact.GetTeachersFromDistrict(user.districtId);
cboCurrTeacher.DataSourceID = null;
cboCurrTeacher.DataSource = table;
cboCurrTeacher.DataBind();
}
}
