I would like to have getObjPositionInParent as a sort criteria in a collection. I configured it as "available" in the site setup for collection views. But it is not available. Did I forget something?
You didn't forget anything, but found a bug in Plone. The GopipIndex from plone.app.folder is used for the getObjPositionInParent index. But this index type is not registered for any collection criteria. The criterion registry in Products.ATContentTypes.criteria needs to include a mapping for the GopipIndex. Likely adding it to the SORT_INDICES list would be the right thing to do. To do this from outside, you can do something like:
# Make sort criteria available for the GopipIndex
from Products.ATContentTypes.criteria import _criterionRegistry
crit_reg = _criterionRegistry
crit_id = 'ATSortCriterion'
index = 'GopipIndex'
indices = crit_reg.criterion2index.get(crit_id, ())
crit_reg.criterion2index[crit_id] = indices + (index, )
value = crit_reg.index2criterion.get(index, ())
crit_reg.index2criterion[index] = value + (crit_id, )
Related
I'm trying to use SQL IN clause kind of feature in dynamoDB. I tried using withFilterExpression but I'm not sure how to do it. I looked at similar questions as they were too old. Is there a better method to do this? This is the segment of code I have got. I have used a static List as example but it is actually dynamic.
def getQuestionItems(conceptCode : String) = {
val qIds = List("1","2","3")
val querySpec = new QuerySpec()
.withKeyConditionExpression("concept_id = :c_id")
.withFilterExpression("question_id in :qIds") // obviously wrong
.withValueMap(new ValueMap()
.withString(":c_id", conceptCode));
questionsTable.query(querySpec);
}
I need to pass qID list to fetch results similar to IN clause in SQL Query.
Please refer to this answer. Basically you need to form key list/value list dynamically
.withFilterExpression("question_id in (:qId1, :qId2, ... , :qIdN)")
.withValueMap(new ValueMap()
.withString(":qId1", ..) // just do this for each element in the list in a loop programmatically
....
.withString(":qIdN", ..)
);
Mind there is a restriction on maxItems in 'IN'
Is it possible to put a filter into the Issue model whose items are getting counted here????
issues = Student.objects.annotate(Count('issue'))
I really need to filter it so as to get the desired outcome...
If not is there a way I can be able to get count of all Issues to a particular student?
class Issue(SafeDeleteModel):
_safedelete_policy = SOFT_DELETE
borrower_id = models.ForeignKey(Student,on_delete=models.CASCADE)
book_id = models.ForeignKey(Books,on_delete=models.CASCADE)
class Student(models.Model):
school = models.ForeignKey(School, on_delete=models.CASCADE)
name = models.CharField(max_length=200)
student_id = models.CharField(max_length=20)
Yes, you can filter what items are counted with the filter=… parameter [Django-doc]. We can for example filter on the book_id with:
issues = Student.objects.annotate(
num_issues=Count(
'issue',
filter=Q(issue__book_id_id=some_book_id)
)
)
or to exclude soft deleted items, we can work with the deleted field that has been defined in your model (by the django-safedelete package):
issues = Student.objects.annotate(
num_issues=Count(
'issue',
filter=Q(issue__deleted=False)
)
)
Note: Normally one does not add a suffix _ids to a ManyToManyField field, since Django
it refers to a manager over the target objects. Therefore it should
be book, instead of book_id.
I can successfully retrieve data from my mongoDB instance but need to re-use the objectID for a depending query.
The following code seems to get my entire object but NOT the id. What am I missing?
# Perform a query and retrieve data
mongoOBj <- m$find('{"em": "test#test.com"}')
I realise this is an old question and OP has probably figured it out by now, but I think the answer should be
mongoOBj <- m$find(query = '{"em": "test#test.com"}', field = '{}')
instead of
mongoOBj <- m$find(query = '{"em": "test#test.com"}', field = '{"_id": 1}')
In the second case, the result will be a data frame containing ONLY the IDs. The first line will result in a data frame containing the queried data, including the IDs.
By default, field = '{"_id": 0}', meaning _id is not part of the output.
If you look at the documentation you see that the find method takes a field argument, where you specify the fields you want:
find(query = ’{}’, fields = ’{"_id" : 0}’, sort = ’{}’, skip = 0, limit = 0, handler = NULL, pagesize = NULL)
So in your case it will be something like
mongoOBj <- m$find(query = '{"em": "test#test.com"}', field = '{"_id": 1}')
FYI So the easiest way to get all fields is to do the query with field="{}". That will overwrite the default in the mongolite:: package find() arguments list.
It was driving me nuts for a little while too.
I have the following code which is meant to programmatically assign relation values to a custom content type.
publications = # some data
catalog = getToolByName(context, 'portal_catalog')
for pub in publications:
if pub['custom_id']:
results = catalog(custom_id=pub['custom_id'])
if len(results) == 1:
obj = results[0].getObject()
measures = []
for m in pub['measure']:
if m in context.objectIds():
m_id = intids.getId(context[m])
relation = RelationValue(m_id)
measures.append(relation)
obj.measures = measures
obj.reindexObject()
notify(ObjectModifiedEvent(obj))
Snippet of schema for custom content type
measures = RelationList(
title=_(u'Measure(s)'),
required=False,
value_type=RelationChoice(title=_(u'Measure'),
source=ObjPathSourceBinder(object_provides='foo.bar.interfaces.measure.IMeasure')),
)
When I run my script everything looks good. The problem is when my template for the custom content tries to call "pub/from_object/absolute_url" the value is blank - only after a restart. Interestingly, I can get other attributes of pub/from_object after a restart, just not it's URL.
from_object retrieves the referencing object from the relation catalog, but doesn't put the object back in its proper Acquisition chain. See http://docs.plone.org/external/plone.app.dexterity/docs/advanced/references.html#back-references for a way to do it that should work.
I'm having trouble retrieving a filtered list from google app engine datastore (using python for server side). My data entity is defined as the following
class Course_Table(db.Model):
course_name = db.StringProperty(required=True, indexed=True)
....
head_tags_1=db.ListProperty(db.Key)
So the head_tags_1 property is a list of keys (which are the keys to a different entity called Headings_1).
I'm in the Handler below to spin through my Course_Table entity to filter the courses that have a particular Headings_1 key as a member of the head_tags_1 property. However, it doesn't seem like it is retrieving anything when I know there is data there to fulfill the request since it never displays the logs below when I go back to iterate through the results of my query (below). Any ideas of what I'm doing wrong?
def get(self,level_num,h_key):
path = []
if level_num == "1":
q = Course_Table.all().filter("head_tags_1 =", h_key)
for each in q:
logging.info('going through courses with this heading name')
logging.info("course name filtered is %s ", each.course_name)
MANY MANY THANK YOUS
I assume h_key is key of headings_1, since head_tags_1 is a list, I believe what you need is IN operator. https://developers.google.com/appengine/docs/python/datastore/queries
Note: your indentation inside the for loop does not seem correct.
My bad apparently '=' for list is already check membership. Using = to check membership is working for me, can you make sure h_key is really a datastore key class?
Here is my example, the first get produces result, where the 2nd one is not
import webapp2 from google.appengine.ext import db
class Greeting(db.Model):
author = db.StringProperty()
x = db.ListProperty(db.Key)
class C(db.Model): name = db.StringProperty()
class MainPage(webapp2.RequestHandler):
def get(self):
ckey = db.Key.from_path('C', 'abc')
dkey = db.Key.from_path('C', 'def')
ekey = db.Key.from_path('C', 'ghi')
Greeting(author='xxx', x=[ckey, dkey]).put()
x = Greeting.all().filter('x =',ckey).get()
self.response.write(x and x.author or 'None')
x = Greeting.all().filter('x =',ekey).get()
self.response.write(x and x.author or 'None')
app = webapp2.WSGIApplication([('/', MainPage)],
debug=True)