I've got these two guys in models.py:
class Tag(models.Model):
name = models.CharField(max_length=100)
movies = models.ManyToManyField(Movie)
class Movie(models.Model):
title = models.CharField(max_length=120)
release_year = models.IntegerField('release year', default=0000)
plot = models.CharField(max_length=400)
pub_date = models.DateTimeField('date published')
and this in views.py
class TagCreate(LoginRequiredMixin, CreateView):
model = Tag
success_url = '/movies/ratings/'
fields = ["name"]
Im trying to set the "movies" field in the Tag class with the value of the current movie I'm "taggin"
The URL is:
url(r'^(?P<movie_id>\d+)/tag/$', TagCreate.as_view(), name='tag'),
Thanxs in advanced!
Don't do this as a hidden field on the form. The data is in the URL, you can take it from there. The place to do this is in form_valid.
def form_valid(self):
result = super(TagCreate, self).form_valid()
movie = Movie.objects.get(pk=self.kwargs['movie_id'])
self.object.movies.add(movie)
return result
Related
I want to post a movie into the collection's movie field( list of movies).
I define the model as
class Movie(models.Model):
# collection = models.ForeignKey(Collection, on_delete = models.CASCADE) #, related_name='reviews'
title = models.CharField(max_length=200)
description = models.CharField(max_length=200)
genres = models.CharField(max_length=200)
uuid = models.CharField(max_length=200)
def __str__(self):
return self.title
class Collection(models.Model):
title = models.CharField(max_length=200)
uuid = models.CharField(max_length=200, primary_key = True)
description = models.CharField(max_length=200)
movie = models.ForeignKey(Movie, on_delete = models.CASCADE)
def __str__(self):
return self.title
this is how i am using the viewset
class CollectionViewSet(viewsets.ModelViewSet):
queryset = models.Collection.objects.all()
serializer_class = serializers.CollectionSerializer
but i am not able to enter values for the movie field
enter image description here
also my serializer
class CollectionSerializer(serializers.ModelSerializer):
class Meta:
model = Collection
fields = '__all__'
By default, DRF will represent the relationship with a PrimaryKeyRelatedField, thus expecting a movie ID.
To achieve what you want (create an instance of movie with a collection), you need to overwrite the foreign key field in your serializer with your own Movie serializer.
class MovieSerializer(serializers.ModelSerializer):
class Meta:
model = Movie
fields = '__all__'
class CollectionSerializer(serializers.ModelSerializer):
movie = MovieSerializer()
class Meta:
model = Collection
fields = '__all__'
def create(self, validated_data):
movie = validated_data.pop('movie')
movie = Movie .objects.create(**movie )
collection = Collection.objects.create(movie=movie, **validated_data)
return collection
You need to overwrite the create method so when creating a Collection, you also create a movie.
However, I am not sure the foreign key is set in the right model in your model. (a movie belongs to many collection but not the other way around?) If that's not what you want, just reverse the logic for the serializer.
Edit:
Sending the following should work fine:
{ "uuid": "1001",
"title": "Action",
"description": "Action Movies",
"movie": { "title": "The Burkittsville 7",
"description": "The story of Rustin Parr.",
"genres": "Horror",
"uuid": "5e904"
}
}
The only problem as I mentionned earlier is in your model you defined the foreign key field in collection. So it expects one single movie instance and not a list, thus I took off the brackets you put around movie. Maybe you should consider setting the foreign key in the Movie model, or use a Many to many relationship.
#models.py
class Movie(models.Model):
# collection = models.ForeignKey(Collection, on_delete = models.CASCADE) #, related_name='reviews'
title = models.CharField(max_length=200)
description = models.CharField(max_length=200)
genres = models.CharField(max_length=200)
uuid = models.CharField(max_length=200)
def __str__(self):
return self.title
class Collection(models.Model):
title = models.CharField(max_length=200)
uuid = models.CharField(max_length=200, primary_key = True)
description = models.CharField(max_length=200)
movie = models.ManyToManyField(Movie, on_delete = models.CASCADE)
def __str__(self):
return self.title
serializers.py:
class MovieSerializer(serializers.ModelSerializer):
class Meta:
model = Movie
fields = '__all__'
class CollectionSerializer(serializers.ModelSerializer):
movie = MovieSerializer(read_only=True, many=True)
class Meta:
model = Collection
fields = '__all__'
hope this will give you better unserstand this will work for you
i developed a blog project by watching many open-source courses and create my own django custom admin dashboard where i want to add a category option to my blog project, i have watched some tutorial on as well but couldn't find them helpful
models.py
from django.db import models
from django.forms import ModelForm
from farmingwave.models import BaseHeader,Submenu
class Category(models.Model):
mainmenu=models.ForeignKey(BaseHeader,null=True,on_delete=models.SET_NULL)
submenu=models.ForeignKey(Submenu,on_delete=models.CASCADE)
class AdSideMenu(models.Model):
title_id = models.AutoField(primary_key=True)
title_name = models.TextField()
url = models.TextField()
priority = models.IntegerField()
submenu_status = models.TextField()
class Meta:
db_table = 'admin_side'
class CreateBlog(models.Model):
id = models.AutoField(primary_key=True)
blog_Title = models.TextField(max_length=100)
content = models.TextField(max_length=5000)
category = models.ForeignKey(Category,null=True,on_delete=models.SET_NULL)
class Meta:
db_table = 'create_blog'
they are inhereting data from another app
models.py
`class BaseHeader(models.Model):
main_id = models.AutoField(primary_key=True)
title_name = models.TextField()
url = models.TextField()
priority = models.IntegerField()
submenu_status = models.TextField("false")
class Meta:
db_table = 'base_header'
class Submenu(models.Model):
sub_id = models.AutoField(primary_key=True)
main_id = models.IntegerField()
sub_name = models.TextField()
url = models.TextField()
priority = models.IntegerField()
mainmenu=models.ForeignKey(BaseHeader,on_delete=models.CASCADE)
class meta:
db_table = 'base_subheader'`
and the view function:
def create_blog(request):
if request.method =='POST':
form = CreateBlogForm(request.POST)
if form.is_valid():
form.save()
form = CreateBlogForm()
else:
form = CreateBlogForm()
base = BaseHeader.objects.all()
sub = Submenu.objects.all()
create = CreateBlog.objects.all()
category = Category.objects.all()
context = {
'form' : form,
'createblog' : create,
'category' : category,
'menu' : base,
'sub_menu' : sub,
Why not make the category a select item?
CATEGORY_CHOICES = (
('sports', 'sports'),
('tech', 'tech'),
('politics', 'politics')
)
category = models.CharField(max_length=100, choices=CATEGORY_CHOICES, blank=False)
You'd be able to access it like any other field now, so let's say the user clicked on "Politics articles" you can add a .filter(category="politics") and access it in the templates through {{ article.category }}
I don't know why there are all of these lines in your code, nor do I know the scale of your project, but that's how I would go about doing it.
models.py
class Product(models.Model):
title = models.CharField(max_length=200)
description = models.TextField()
price = models.DecimalField(decimal_places=5,max_digits= 1500)
summary = models.TextField()
featured = models.BooleanField()
def __str__(self):
return self.title
# return f'product title:{self.title}-product price:{self.price}'workok
class Meta:
ordering = ('-price',)
class Opinion(models.Model):
name = models.CharField(max_length=20)
email = models.EmailField(max_length=20)
body = models.TextField()
opinion_date = models.DateTimeField(auto_now_add=True)
active = models.BooleanField(default=False)
product = models.ForeignKey(Product, on_delete=models.CASCADE, related_name='opinion_set')
def __str__(self):
return f'({self.name}) add opinion about ({self.product})'
forms.py:
from django.forms import ModelForm
from .models import Product #space after from keyword
class OpinionModelForm(ModelForm):
class Meta:
model = Product
fields = ['name','email','body','product']
invalid in code line :
fields = ['name','email','body','product'] #---- NOT WORK !!!
, but if i change above code to :
fields = "__all__" # ----it is WORKing ok without any problem !!
question : what is the error? I am not need all the fields in the Product model (like active boolean field), I need only 'name','email','body','product' fields .
According to the error and the code you provided the main problem is that you made a mistake in chosing model in serializer:
class OpinionModelForm(ModelForm):
class Meta:
model = Product
fields = ['name','email','body','product']
Serializer name is OpinionModelForm and listed fields belong to Opinion so I guess you actually wanted to serialize Opinion and no Product as you defined at this line:
model = Product
Simply change it to:
model = Opinion
i have three models for a blog , shown blow:
class Author(models.Model):
name = models.CharField(max_length = 50)
class BlogPost(models.Model):
title = models.CharField(max_length = 250)
body = models.TextField()
author = models.ForeignKey(Author,on_delete = models.CASCADE)
date_created = models.DateTimeField(auto_now_add = True)
def copy():
pass
class Comment(models.Model):
blog_post = models.ForeignKey(BlogPost, on_delete = models.CASCADE)
text = models.TextField(max_length = 500)
i want to define a copy() method for BlogPost model that copies a BlogPost instance with copieng related comment instances . how can i do this?
You can iterate through the related comments of a given BlogPost instance and make a copy of each comment by nulling its pk attribute, then assign the blog_post foreign key to self and save.
def copy(self, post):
for comment in post.comment_set.all():
comment.pk = None
comment.blog_post = self
comment.save()
I've got the Restaurant and Comment models shown below. The Comment model has a ForeignKey to Restaurant. How can I perform a search in some of the Restaurant fields and in the comment field of the Comment model which returns a list of Restaurant instances?
Thanks
class Restaurant(models.Model):
name = models.CharField(max_length=100)
country=models.ForeignKey(Country)
city=models.ForeignKey(City)
street=models.CharField(max_length=100)
street_number=models.PositiveSmallIntegerField()
postal_code=models.PositiveIntegerField(blank=True, null=True)
slug = models.SlugField(unique=True)
class Comment(models.Model):
user = models.ForeignKey(User)
restaurant = models.ForeignKey(Restaurant)
submit_date = models.DateTimeField(blank = True, null = False)
comment = models.TextField()
I think you should read the manual: http://django-haystack.readthedocs.org/en/latest/tutorial.html
look for multivalue:
class RestaurantIndex(indexes.SearchIndex):
comments = indexes.MultiValueField()
def prepare_comments(self, obj):
return [a for a in obj.comment_set.all()]