public async Task <IActionResult> Download(DownloadSubmissionViewModel downloadSubmissionViewModel)
{
// Will be > -1 if we got here because user clicked one of the student selection links
// next to one of the section names
int iSectionStudents = downloadSubmissionViewModel.SectionsAndStudents.FindIndex
(
ss => ss.SectionsAndStudentsSubmitButton != null
);
downloadSubmissionViewModel.IndexForSectionStudentsView = iSectionStudents;
if (iSectionStudents != -1)
{
// Display the "select students" form controls
return(View("Download", downloadSubmissionViewModel));
}
// Either we posted here from the select-a-student form, or from the primary
// download submissions form
if (downloadSubmissionViewModel.DownloadSubmitButton == null)
{
// We posted here from the select-a-student form, so render the
// main download form controls (with the updated student selections)
return(View("Download", downloadSubmissionViewModel));
}
// The download submission button was clicked, so we're finally ready to initiate the download
return(await DownloadSubmissionsAsync(downloadSubmissionViewModel));
}
public async Task <IActionResult> Download(string sectionName)
{
// Gets list of sections and students from db for user to choose from
var downloadCandidates = await SubmissionService.GetCheckpointDownloadCandidateListAsync(
ClassroomName,
ProjectName,
CheckpointName);
List <SectionsAndStudents> sectionStudents = downloadCandidates.Select
(
dc => new SectionsAndStudents()
{
SectionId = dc.Section.Id,
SectionName = new SelectListItem()
{
Text = dc.Section.DisplayName,
Value = dc.Section.Name,
// Whichever section the user had clicked on before
// choosing to download should be checked by default
Selected = (dc.Section.Name == sectionName)
},
SelectedStudents = dc.Users.Select
(
user => new StudentToDownload()
{
Selected = true,
FirstName = user.User.FirstName,
LastName = user.User.LastName,
Id = user.User.Id,
Submitted = user.Submitted
}
)
.OrderBy(ss => ss.LastName)
.ThenBy(ss => ss.FirstName)
.ToList()
}
)
.OrderBy(sas => sas.SectionName.Text)
.ToList();
DownloadSubmissionViewModel viewModel = new DownloadSubmissionViewModel()
{
IndexForSectionStudentsView = -1,
Format = ProjectSubmissionDownloadFormat.All,
IncludeUnsubmitted = true,
SectionsAndStudents = sectionStudents,
};
return(View("Download", viewModel));
}
/// <summary>
/// Once the user has chosen the download properties, made the student selections, and clicked
/// the main form submit button, this initiates the actual download
/// </summary>
/// <param name="downloadSubmissionViewModel">ViewModel for the form</param>
public async Task <IActionResult> DownloadSubmissionsAsync(DownloadSubmissionViewModel downloadSubmissionViewModel)
{
var selectedStudents = downloadSubmissionViewModel.SectionsAndStudents
.Where
(
sas => sas.SectionName.Selected
)
.SelectMany
(
sas => sas.SelectedStudents
.Where
(
ss => ss.Selected &&
(ss.Submitted || downloadSubmissionViewModel.IncludeUnsubmitted)
)
.Select
(
ss => ss.Id
)
).ToList();
if (selectedStudents.Count == 0)
{
return(NotFound());
}
var archiveContents = await SubmissionService.DownloadSubmissionsAsync
(
ClassroomName,
ProjectName,
CheckpointName,
selectedStudents,
downloadSubmissionViewModel.Format
);
var timestamp = TimeZoneProvider.ToUserLocalTime(DateTime.UtcNow)
.ToString("yyyyMMdd-HHmmss");
var filename = $"{Classroom.Name}-{Project.Name}-{Checkpoint.Name}-{timestamp}.zip";
return(File(archiveContents, "application/zip", filename));
}