I have 3 models: and I am trying to access all passengers of a certain Flight when I visit /<int:flight_id> like this: Your response is appreciated Thank you In advanced Answer You can access passengers of an instance of Flight, not directly from class Flight:
Tag: django-models
Add time in django Models.py
I tried subtracting two times in models.py but I got error. Here is my model That I have been working. and BusCompanyRoute have journey length. Now I tried adding these times in using @property decorator in following way but end up getting following error warning as: Class ‘time’ does not define &…
Django group by Choice Field and COUNT Zeros
Consider the following django model: Now, I’d like to group all Ratings by the number of ratings per category like this: which returns a QuerySets like this: Is there a way to include all not-rated dimensions? To achieve an output like: Answer First we will create a dictionary with counts for all dimens…
How to autofocus a Charfield in a Django ModelForm
In my django app I want to set focus to the first CharField (task) when the page loads. my models.py is and forms.py is I have tried adding the following widget in my CharField (in models.py): but it gives an AttributeError: module ‘django.db.models’ has no attribute ‘TextInput’ I have…
Django how to find sum of reverse FK and reverse FK of the reverse FK
Due to an absolutely fantastic DB design, I’ve stumbled across an issue. I’m counting the number of reverse FK matches and ITS reverse FK matches (following the method in this SO question: Django QuerySet ordering by number of reverse ForeignKey matches). I tried doing: But I’m getting 6 == …
create() populates manytomany with every row in the related table, rather than leave it blank [closed]
Closed. This question is not reproducible or was caused by typos. It is not currently accepting answers. This question was caused by a typo or a problem that can no longer be reproduced. While similar questions may be on-topic here, this one was resolved in a way less likely to help future readers. Closed 2 y…
Handling data during django migrations?
I have created this model. Let suppose I have added a new field called After that If I run command python manage.py makemigrations, then django will add a new field status in table. Let’s I have 3 rows in the table, then value will be as below: With this migration, I also want to change the status of ev…
How to store bitcoin and USD on the same django models field?
To store USD I am using DecimalField: But what if I want to store bitcoins? Bitcoin’s minimal thing is satoshi. One bitcoin = million satoshi. I have 2 options: using DecimalField with decimal_places=5 or using an IntegerField. But I do not want to have a sepperate field for storing this. Is there any w…
Storing images in sqlite – Django
I’m new to Django and databases. Django used the sqlite database as it’s default database. Is it possible to store images in the sqlite database and display it on my webpage? I can’t find any documentation on the official Django website for it. Answer Django’s ImageField and FileField …
Image is not updating in Django
Please help me. I am trying to update the profile in which username and email are updated but the image dose not. My code is…. profile.html views.py forms.py Answer I believe your issue lies in views.py. Firstly, you are checking to see if the method for retrieving the view is POST. If it is not, you ar…