I am new to Python, MongoDB(mongoengine(ODM)) and the pyramid framework as a
whole. I am currently working on a project using the above mentioned
technologies and I want to use jQuery datatables(also new to this) I found a
link on their site on how to use datatables with MongoDB, but it is in php and
my translation skills aren't that good.
my question is:
Is it possible to use datatables using the above mentioned technologies, if
yes, then how?
I have tried converting someone else's code that used SQLAlchemy with
datatables, but I am stuck as I do not know how to change the function.
@view_config(
route_name='candidate.list.json',
renderer='json',
permission="admin"
)
def candidate_list_json(context, request):
def format_output(vals):
vals = list(vals)
vals[-1] = """<div class="btn-group"><a href='%s' class=btn>View</a><a
href='%s' class=btn>Edit</a></div>""" % (
request.route_url('candidates', id_number=vals[-1], traverse=()),
request.route_url('candidates', id_number=vals[-1], traverse="edit")
)
vals[0] = "<a href='%s'>%s</a>" % (request.route_url('candidates',
id_number=vals[0], traverse=()), vals[0])
return vals
if has_permission('admin', context, request):
basefilt = None # I changed Up to here
return handle_datatable(
request,
Agents.id,
[Agents.db_agent_id, Agents.db_name, Agents.id_number,
Agents.mobile_number, OrgUnits.name, Agents.db_agent_id],
lambda term: or_(Agents.db_agent_name.like('%'+term+'%'),
OrgUnits.name.like('%'+term+'%'), Agents.mobile_number.like('%'+term+'%'),
Agents.id_number.like('%'+term+'%'), ),
join=[Agents.ou],
formatfunc=format_output,
base_filt=basefilt
)
handle_datatable is a method:
def handle_datatable(request, idcol, cols, filtfunc, options=None,
cache='short_term', formatfunc=None, displaylength=90, join=None,
base_filt=None, outerjoin=None, groupby=None, no_paginate=False,
ordercols=None, orderby=None, printquery=False, nocount=False):
s = sqlahelper.get_session()
if groupby is not None and type(groupby) != list and type(groupby) != tuple:
groupby = [groupby]
def attachfilt(q, filt, nogroup=False):
if filt:
q = q.filter(and_(*filt))
if join:
q = q.join(*join)
if outerjoin:
q = q.outerjoin(*outerjoin)
if options:
q = q.options(*options)
if groupby and not nogroup:
for g in groupby:
q = q.group_by(g)
return q
@cache_region('short_term')
def perform_count(filt, idcol, term):
if not nocount:
return attachfilt(s.query(idcol), filt, nogroup=False).count()
else:
return 0
#@cache_region('short_term', 'handle_search')
def perform_search(filt, cols, iStart, iLength, order_cols):
q = attachfilt(s.query(*cols), filt)
if order_cols:
q = q.order_by(*order_cols)
if printquery:
print q
if no_paginate:
rows = q.all()
else:
rows = q[iStart:iStart+iLength]
if callable(formatfunc):
data = [formatfunc(row[:]) for row in rows]
else:
data = [row[:] for row in rows]
return data
if not callable(filtfunc):
raise Exception("Filter Function is not callable")
if not cols:
raise Exception("Please provide columns to search")
if not no_paginate:
iStart = int(str(request.params.get("iDisplayStart", 0)))
iLength = int(str(request.params.get("iDisplayLength", displaylength)))
else:
iStart = 0
iLength = 0
if not ordercols:
ordercols = cols
if orderby:
order_cols = orderby
else:
order_cols = []
if request.params.get("iSortCol_0", None):
iSortingCols = int(str(request.params.get('iSortingCols', 0)))
for k in range(0, iSortingCols):
iSortCol = int(str(request.params.get('iSortCol_%s' % k, 0)))
sSortDir = str(request.params.get('sSortDir_%s' % k, 0))
if str(request.params.get('bSortable_%s' % iSortCol, 'false') ==
'true'):
col = ordercols[iSortCol]
if sSortDir == "asc":
order_cols.append(col.asc())
else:
order_cols.append(col.desc())
search = request.params.get("sSearch", None)
filt = []
if search:
filt = filtfunc(search)
if filt is not None and type(filt) != list:
filt = [filt]
if type(cols) != list:
cols = [cols]
itotal = perform_count([base_filt], idcol, search)
if no_paginate:
iLength = itotal
if base_filt is not None:
filt.append(base_filt)
cnt = perform_count(filt, idcol, search)
data = perform_search(filt, cols, iStart, iLength, order_cols)
return dict(
sEcho=request.params.get("sEcho", 0),
iTotalRecords=itotal,
iTotalDisplayRecords=cnt,
aaData=data
)
As I said before I am new to these Technologies, but I am willing to learn, if
you can just point me in the right direction.
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