I’m working on making some data consults in Django but I don’t understand quite well its ORM system yet. I need to get the transactions’ quantity for a particularly transaction’s projections. To put it briefly, I want to translate this SQL query to Python/Django syntax: These are the m…
Tag: django
ValueError could not convert string to float: ”
I’m having my app on heroku. I use timeme js to record user’s active time spend on the page, and use a hidden form to store the value into the database. Additionally, I’m using otree package to write my app. The following is the code I use: models.py views.py/pages.py in otree html The error…
uwsgi can’t be installed
I’m stuck trying to install uWSGI to deploy my Django application using pip install uwsgi, but encounter this error: I’ve found several answers that unfortunately didn’t work for me, like update dev tool ,install cywin or modify uwsgiconfig.py (which doesn’t exist since it’s not …
Django Exif Data: ‘IFDRational’ object is not subscriptable
I got an issue with the code: ‘IFDRational’ object is not subscriptable Here is the trace: the is issue is: Variable Value dms (45.0, 46.0, 34.29) ref ‘N’ That what I get from an image for instance. I think the code assimilate GPSLatitudeRef to degrees = dms[0][0] / dms[0][1]. The thin…
DRF add non model fields just to update or create model instance
I have this issue at the moment with DRF. I’m recieving extra fields that the model is not using. But those values will define the fields within the model. And i got this model All I need is to parse file_name and file_type to upload img to create a url_img and upload it on cloud. Is there a way to
How to order queryset based on best match in django-rest-framework?
I am trying to order results of a query with parameters by number of matches. For example, let’s say we have a Model: With a Serializer: And a ViewSet: What I need to do is count every match the filter finds and then order the queryset by that number of matches for each template. For example: I want to …
module ‘qrcode’ has no attribute ‘make’
While integrating python library qrcode==6.1 with django==3.1.2. I have been trying to generate a qrcode which will contain the URL links for my other websites. Models.py But It always display an error saying that module ‘qrcode’ doesnot contain any attribute named ‘make()’. I want to …
Difference between the __lte and __gte in Django
I am trying to figure out the difference between the __lte and __gte in Django. The reason being that I am trying to create a function with dates that can work only with a time frame, so I’ve been researching between Field Lookups Comparison. I’ve looked up several documentations https://docs.djan…
Use a decorator to add in a variable to request
I know the suggested way to do this is middleware, but I’d like to implement the following to add in an api_env variable, accessed at run-time, so that my view can access it: And the decorator: What’s the best way to do this? I have about 100 functions to wrap so I don’t want to add in a new…
Django, link a model field with an admin model field with ForeignKey
I’m trying to link a “normal” model field with an admin model field, for example I have a table “Post” and I want to add the admin username as a ForeignKey to the field “Author” of the table Post. I mean : Where admin.username refers the username of auth_user admin mo…