RefferCheck = Users.objects.get(username=str(request.POST['reffer']))
if RefferCheck:
if empty(RefferCheck.left):
RefferCheck.left = str(request.POST['username'])
RefferCheck.save()
I am trying to update a single row in Database. but it not working and don't show any error Too.
Note : I am not using Django forms i am using custom html forms.
First of all, you do not need this exctra check
RefferCheck = Users.objects.get(username=str(request.POST['reffer']))
if RefferCheck:
because get() method will raise DoesNotExists exception if no regord will be found.
Next thing is that your empty function is not needed and not working correctly. You can simply replace it with this:
# if left is None or empty string - this will evaluate to True
if not RefferCheck.left:
...
Related
i able to print values from below code in django views
subMarks = []
for item in marks:
for column in gridHeaderTableData:
subMark = item[column['sub_exam_name']]
subMarks.append(subMark)
how to write above code in django templates
You can't set any variables in templates, it's actually not Python language. What is you can do, just write this code into your view, save result as variable, and push to your template, where you can print what you want.
I'm new to Python and I'm trying to make a simple bulletin board system app using web2py. I am trying to add a post into a certain board and I linked the post and board by including the following field in my post table: Field('board_id', db.board). When I try to create a post inside a particular board it gives me an error: "OperationalError: no such column: board.id". My code for create_posts:
def add_post():
board = db.board(request.args(0))
form = SQLFORM(db.post)
db.pst.board_id.default = db.board.id
if form.process().accepted:
session.flash = T('The data was inserted')
redirect(URL('default', 'index'))
return dict(form=form, board=board)
When I try to do {{=board}} on the page that shows the posts in a certain board, I get Row {'name': 'hi', 'id': 1L, 'pst': Set (pst.board_id = 1), 'description': 'hi'} so I know it's there in the database. But when I do the same thing for the "add post" form page, it says "board: None". I'm extremely confused, please point me in the right direction!
There appear to be several problems with your function. First, you are assigning the default value of the board_id field to be a Field object (i.e., db.board.id) rather than an actual id value (e.g., board.id). Second, any default values should be assigned before creating the SQLFORM.
Finally, you pass db.post to SQLFORM, but in the next line, the post table appears to be called db.pst -- presumably these are not two separate tables and one is just a typo.
Regarding the issue of {{=board}} displaying None, that indicates that board = db.board(request.args(0)) is not retrieving a record, which would be due to request.args(0) itself being None or being a value that does not match any record id in db.board. You should check how you are generating the links that lead to add_post and confirm that there is a valid db.board id in the first URL arg. In any case, it might be a good idea to detect when there is no valid board record and either redirect or display an error message.
So, your function should look something like this:
def add_post():
board = db.board(request.args(0)) or redirect(URL('default', 'index'))
db.pst.board_id.default = board.id
form = SQLFORM(db.pst)
if form.process(next=URL('default', 'index'),
message_onsuccess=T('The data was inserted'))
return dict(form=form, board=board)
Note, if your are confident that links to add_post will include valid board IDs, then you can eliminate the first line altogether, as there is no reason to retrieve a record based on its ID if the only field you need from it is the ID (which you already have). Instead, the second line could be:
db.pst.board_id.default = request.args(0) or redirect(URL('default', 'index'))
I'm trying to validate json using python validictory, but when I get a validation error the validation ends and missing field name is reported, but if there is more than one field missing I only get a message about the first one. I need to know about all the fields that are missing. Is there an function which will return all missing fields?
This script only needs to validate a json document, so answers using other libraries, languages are welcome.
When you call .validate() set fail_fast property to False. That will force validictory to return all errors instead of only first one.
I'm doing a program using Twitter API and MongoDB in 2.7 Python language.
I get a timeline and put it in a dictionary, which I want to store in a MongoDB database. To do this I have next code:
def saveOnBD(self, dic):
client = MongoClient("xxxx", "port")
db = client.DB_Tweets_User_Date
collection = db.tweets
collection.insert_many(dic)
I'm debbuging and dic it's not empty but I get next error:
TypeError: documents must be a non-empty list
How can I fix it?
I trying many options, but i solved that question changing the post method.
Instead of:
collection.insert_many(dic)
I used this:
collection.insert_one(dic)
I supose that, as I try to post only a variable(dic) and "insert_many()" is for many variables that retun me the error. That change solved me the question
you can either put in an entry before running the bulk entry function or use insert()
A list of documents must be passed to insert_many method
E.g.:
collection.insert_many([dic])
I'm developing application using Bottle. How do I get full query string when I get a GET Request.
I dont want to catch using individual parameters like:
param_a = request.GET.get("a","")
as I dont want to fix number of parameters in the URL.
How to get full query string of requested url
You can use the attribute request.query_string to get the whole query string.
Use request.query or request.query.getall(key) if you have more than one value for a single key.
For eg., request.query.a will return you the param_a you wanted. request.query.b will return the parameter for b and so on.
If you only want the query string alone, you can use #halex's answer.