I'm building my filters as a list but having trouble building them with the Q function. It seems to be that doing things manually the filters work but when trying to build up the filters by concatenating strings I get the following issues:
Here is the Query:
MyLocationFilter = BuildQueryORFilter('MyLocationCountryCode', MyLocationCodePref1)
list = AboutMe.objects.order_by('MyLinkedInLastName').filter(reduce(OR, MyLocationFilter))
And here is how I am building those Filters:
def BuildQueryORFilter(fieldname, fieldvalues):
QueryList = []
spltfieldvalues = fieldvalues.split()
for item in spltfieldvalues:
strpitem = item.strip('[],')
queryitem = Q(fieldname+"__contains="+strpitem)
QueryList.append(queryitem)
return QueryList
However the problem seems to be how to get Q(..) in the form of Q(fieldname__contains=gb) rather than Q('fieldname__contains=gb') which seems to be throwing up issues such as:
ValueError
Exception Value:
need more than 1 value to unpack
How should I build the Q queries to avoid this unpacking issue?
Traceback for possible answer (below)
Traceback:
File "/usr/lib/python2.7/dist-packages/django/core/handlers/base.py" in get_response
111. response = callback(request, *callback_args, **callback_kwargs)
File "/home/brett/LinkedIn/phaseone/jelt/views.py" in AboutMeList
259. list = AboutMe.objects.order_by('MyLinkedInLastName').filter(MyLocationFilter)
File "/usr/lib/python2.7/dist-packages/django/db/models/query.py" in filter
624. return self._filter_or_exclude(False, *args, **kwargs)
File "/usr/lib/python2.7/dist-packages/django/db/models/query.py" in _filter_or_exclude
642. clone.query.add_q(Q(*args, **kwargs))
File "/usr/lib/python2.7/dist-packages/django/db/models/sql/query.py" in add_q
1250. can_reuse=used_aliases, force_having=force_having)
File "/usr/lib/python2.7/dist-packages/django/db/models/sql/query.py" in add_filter
1056. arg, value = filter_expr
Exception Type: ValueError at /list/
Exception Value: need more than 1 value to unpack
Pass the keyword argument by unpacking a dict.
strpitem = item.strip('[],')
key = fieldname + "__contains"
d = {key: strpitem}
queryitem = Q(**d)
Related
I am trying to generate a pdf from an html-template in django. Therefore i use pretty much the basic methods found in the web. The issue is that in can get it to generate the content of my template, but not the images from my media directory. I always get the following error:
SuspiciousFileOperation at /manager/createpdf/
The joined path is located outside of the base path component
Since i can get some result, i assume that nothing is wrong with my view. Here is my render_to_pdf
def render_to_pdf(template_src, context_dict):
template = get_template(template_src)
html = template.render(context_dict)
result = BytesIO()
pdf = pisa.pisaDocument(BytesIO(html.encode('UTF-8')), result, link_callback=link_callback)
if not pdf.err:
return HttpResponse(result.getvalue(), content_type='application/pdf')
return None
and the link_callback:
def link_callback(uri, rel):
result = finders.find(uri)
if result:
if not isinstance(result, (list, tuple)):
result = [result]
result = list(os.path.realpath(path) for path in result)
path=result[0]
else:
sUrl = settings.STATIC_URL
sRoot = settings.STATIC_ROOT
mUrl = settings.MEDIA_URL
mRoot = settings.MEDIA_ROOT
if uri.startswith(mUrl):
path = os.path.join(mRoot, uri.replace(mUrl, ""))
elif uri.startswith(sUrl):
path = os.path.join(sRoot, uri.replace(sUrl, ""))
else:
return uri
# make sure that file exists
if not os.path.isfile(path):
raise Exception( 'media URI must start with %s or %s' % (sUrl, mUrl))
return path
I am pretty much sure that the link_callback doesnt do it's purpose. But my knowledge is to little to patch it. I also assume that i configured the media directory correctly. I can access the media files in other views/templates.
Help is very appreciated, since i spend quiet some hours on this issue... A big thx to all the are going to contribute here!
OK, i found it! In the finders.py i checked the find-method. It turns out that the find method only looks for files in the static directory and disregards the media directory. i just deleted all the lins and it works now. Here is the code:
def link_callback(uri, rel):
sUrl = settings.STATIC_URL
sRoot = settings.STATIC_ROOT
mUrl = settings.MEDIA_URL
mRoot = settings.MEDIA_ROOT
if uri.startswith(mUrl):
path = os.path.join(mRoot, uri.replace(mUrl, ""))
elif uri.startswith(sUrl):
path = os.path.join(sRoot, uri.replace(sUrl, ""))
else:
return uri
if not os.path.isfile(path):
raise Exception( 'media URI must start with %s or %s' % (sUrl, mUrl))
return path
By using Axios, I can successfully fetch one JSON file returned from flask.
Now I have another JSON file that needs to be pass to the same route: /dashboard, is it possible to return several JSON files in one route?
ps. I'm a newbie in flask
Below are the codes:
#app.route("/dashboard", methods= ['GET'])
def key_index():
try:
key_index = db.sns.find({},{"_id":0}).sort([("datetime", -1)]).limit(1)
return dumps(key_index)
except Exception as e:
return dumps({'error': str(e)})
#app.route("/dashboard", methods= ['GET'])
def sns_trend():
try:
trend = db.sns_2.find({})
return dumps(trend)
except Exception as e:
return dumps({'error': str(e)})
a single letter json you can return 2 data
example
#app.route("/dashboard", methods= ['GET'])
def key_index():
try:
key_index = db.sns.find({},{"_id":0}).sort([("datetime", -1)]).limit(1)
trend = db.sns_2.find({})
return dumps({
'key_index':key_index,
'trend':trend
})
except Exception as e:
return dumps({'error': str(e)})
I have a question about using apollo-upload-client and graphene-django. Here I've discovered that apollo-upload-client adding operations to formData. But here graphene-django is only trying to get query parameter. And the question is, where and how it should be fixed?
If you're referring to the data that has a header like (when viewing the HTTP from Chrome tools):
Content-Disposition: form-data; name="operations"
and data like
{"operationName":"MyMutation","variables":{"myData"....}, "query":"mutation MyMutation"...},
the graphene-python library interprets this and assembles it into a query for you, inserting the variables and removing the file data from the query. If you are using Django, you can find all of the uploaded files in info.context.FILES when writing a mutation.
Here's my solution to support the latest apollo-upload-client (8.1). I recently had to revisit my Django code when I upgraded from apollo-upload-client 5.x to 8.x. Hope this helps.
Sorry I'm using an older graphene-django but hopefully you can update the mutation syntax to the latest.
Upload scalar type (passthrough, basically):
class Upload(Scalar):
'''A file upload'''
#staticmethod
def serialize(value):
raise Exception('File upload cannot be serialized')
#staticmethod
def parse_literal(node):
raise Exception('No such thing as a file upload literal')
#staticmethod
def parse_value(value):
return value
My upload mutation:
class UploadImage(relay.ClientIDMutation):
class Input:
image = graphene.Field(Upload, required=True)
success = graphene.Field(graphene.Boolean)
#classmethod
def mutate_and_get_payload(cls, input, context, info):
with NamedTemporaryFile(delete=False) as tmp:
for chunk in input['image'].chunks():
tmp.write(chunk)
image_file = tmp.name
# do something with image_file
return UploadImage(success=True)
The heavy lifting happens in a custom GraphQL view. Basically it injects the file object into the appropriate places in the variables map.
def maybe_int(s):
try:
return int(s)
except ValueError:
return s
class CustomGraphqlView(GraphQLView):
def parse_request_json(self, json_string):
try:
request_json = json.loads(json_string)
if self.batch:
assert isinstance(request_json,
list), ('Batch requests should receive a list, but received {}.').format(
repr(request_json))
assert len(request_json) > 0, ('Received an empty list in the batch request.')
else:
assert isinstance(request_json, dict), ('The received data is not a valid JSON query.')
return request_json
except AssertionError as e:
raise HttpError(HttpResponseBadRequest(str(e)))
except BaseException:
logger.exception('Invalid JSON')
raise HttpError(HttpResponseBadRequest('POST body sent invalid JSON.'))
def parse_body(self, request):
content_type = self.get_content_type(request)
if content_type == 'application/graphql':
return {'query': request.body.decode()}
elif content_type == 'application/json':
return self.parse_request_json(request.body.decode('utf-8'))
elif content_type in ['application/x-www-form-urlencoded', 'multipart/form-data']:
operations_json = request.POST.get('operations')
map_json = request.POST.get('map')
if operations_json and map_json:
operations = self.parse_request_json(operations_json)
map = self.parse_request_json(map_json)
for file_id, f in request.FILES.items():
for name in map[file_id]:
segments = [maybe_int(s) for s in name.split('.')]
cur = operations
while len(segments) > 1:
cur = cur[segments.pop(0)]
cur[segments.pop(0)] = f
logger.info('parse_body %s', operations)
return operations
else:
return request.POST
return {}
This filter works just fine in my LDAP browser by python ldap won't pick it up:
(&(!objectClass=computer)(sn=*%s*))
resulting in:
Request Method: GET Request
URL: http://localhost:8000/ldap_find/%D0%B1%D0%BE%D0%BB%D0%BE%D1%82/
Django Version: 1.4
Exception Type: FILTER_ERROR
Exception Value: {'desc': 'Bad search filter'}
here's the code that does it:
try:
LDAPClient.connect()
base = AUTH_LDAP_SEARCH_BASE
scope = ldap.SCOPE_SUBTREE
filter = '(&(!objectClass=computer)(sn=*%s*))' % search_string
result_set = list()
result = LDAPClient.client.search(base.encode(encoding='utf-8'), scope, filter.encode(encoding='utf-8'),['cn','mail'])
res_type, res_data = LDAPClient.client.result(result)
for data in res_data:
if data[0]:
result_set.append(data)
return json.dumps(result_set)
except Exception, e:
raise e
finally:
LDAPClient.unconnect()
it works fine with simple filters, like
filter = 'sn=*%s*' % search_string
so I'm guessing this is some kind of escaping of & or something inside ldap lib but can't find the root yet.
The search filter syntax is incorrect. Use (&(sn=*%s*)(!(objectClass=computer))). Search filters are well-documented in RFC4511 and RFC4515.
i work on grails project
def result = "customer"
//(this value is according to returned method parameter,
//it may be customer, company,... & so on)
def messages = "${message(code: 'default.result.${result}', default:'${result}')}"
i need to send a variable inside message code as i mention above
problem: this code appears as
default.result.${result}
that there is no code in message.properties refer to these code
there is default.result.customer ....$ so on
Question: how can i send variable inside message Code?
Try omitting the double quotes (GString) and it should work like the following:
def xxx = "bar"
def m = message(code: "foo.${xxx}", args: ['hello world'])
Results in following message-code
foo.bar
Try:
def messages = message(code: 'default.result.' + result, default: result)
If you want to pass in some values, e.g. a string, you can define your message like this:
default.result.success = Action {0} was successfull.
And resolve your code like this:
def m = message(code: 'default.result.' + result, args: ['delete User'])