def upload_file(request,data_id=None):
"""
Display a form for uploading a data file and creating a DataFile
"""
datafile = use_api.getDatafile(data_id)
if request.method == 'POST': # If the form has been submitted...
form = forms.DataFileForm(request.POST, request.FILES, instance=datafile) # A form bound to the POST data
if form.is_valid(): # All validation rules pass
uploaded_file=form.cleaned_data["file"]
name=form.cleaned_data["name"]
use_api.saveFile(user_id=request.user.id, name=name, file=uploaded_file, datafile=datafile)
return HttpResponseRedirect(reverse('list_files')) # Redirect after POST
else:
if datafile != None:
post = reverse('replace_data',args=[datafile.id])
else:
post = reverse('upload_file')
else:
if datafile != None:
form = forms.DataFileForm(instance=datafile)
post = reverse('replace_data',args=[datafile.id])
else:
form = forms.DataFileForm()
post = reverse('upload_file')
link = {
'post' : post,
'cancel' : {
'url' : reverse('list_files'),
'name' : "Cancel" if not datafile else "Back",
}
}
if datafile != None:
link.update(
{
'remove' : reverse('delete_file',args=[datafile.id]),
'download' : reverse('download',args=[datafile.id]),
'map' : reverse('map_data',args=[datafile.id]),
}
)
page = { "title" : "File" }
if not data_id:
page.update( title = "Upload File" )
return render_to_response(
'UploadFile.html',
{
'page' : page,
'link' : link,
'form' : form,
'datafile' : datafile,
},
context_instance=RequestContext(request)
)
def view_file(request,data_id):
'''
Basic view for showing the first part of the "raw" results
Includes a set of links for picking alternate views
'''
data = use_api.getDatafile(data_id)
datafile = data.file
datafile.open("r")
lines = []
for n in range(0,3):
lines[n] = datafile.readline()
datafile.close()
return render_to_response(
'UnderConstruction.html',
{
"message" : "First lines of file '%s'" % data.name,
"list" : lines,
},
context_instance=RequestContext(request)
)
def map_file(request,data_id):
'''
Display a file on a map
Expand mapdata as necessary to include additional styling Javascript etc.
Also want to trim the file data to a minimum and compute things like
the geometry origin (mean of longitude and latitude); plus some way to
pick the zoom level/extent.
'''
datafile = use_api.getDatafile(data_id)
if not datafile:
return HttpReverseRedirect(reverse('list_files'))
if datafile.source=="result":
# Data file is a job result; view it from there
job = datafile.results.get(results=datafile) # there really should only be one
if job:
return HttpResponseRedirect(reverse('view_job',args=[job.id]))
# But if there's no job, we'll just fall through to treat it as data
name = datafile.name
link = {
'cancel' : {
'url' : reverse('replace_data',args=[data_id]),
'name' : "Back",
},
'download' : reverse('download',args=[data_id]),
}
return render_to_response(
'DrawMap.html',
{
"link" : link,
"name" : datafile.name,
"mapdata" : reverse('jsonp',args=[data_id]),
},
context_instance=RequestContext(request)
)
