I am working on a project from school and one of the questions is List all leagues with a (current) player named "Sophia". I have been able to get all the leagues period, and all the players name Sophia. How ever I cannot seem to figure out how to start in the last table where the first name is reference the first table where the leagues are to get the answer I need. I am hoping someone can see what I am having issues seeing. I have linked the models and views below.
Manage.py
from django.db import models
class League(models.Model):
name = models.CharField(max_length=50)
sport = models.CharField(max_length=15)
created_at = models.DateTimeField(auto_now_add=True)
updated_at = models.DateTimeField(auto_now=True)
class Team(models.Model):
location = models.CharField(max_length=50)
team_name = models.CharField(max_length=50)
league = models.ForeignKey(League, related_name="teams")
class Player(models.Model):
first_name = models.CharField(max_length=15)
last_name = models.CharField(max_length=15)
curr_team = models.ForeignKey(Team, related_name="curr_players")
all_teams = models.ManyToManyField(Team, related_name="all_players")
views.py
from django.shortcuts import render, redirect
from .models import League, Team, Player
from . import team_maker
def index(request):
context = {
"leagues": League.objects.all(),
"teams": Team.objects.all(),
"players": Player.objects.all(),
"baseball" : League.objects.filter(sport__contains="Baseball"),
"women" : League.objects.filter(name__contains="Womens'"),
"ice" : League.objects.filter(sport__contains="ice"),
"nofootball" : League.objects.exclude(sport__contains="football"),
"conferences" : League.objects.filter(name__contains="conference"),
"atlantic": League.objects.filter(name__contains="Atlantic"),
"teamdallas": Team.objects.filter(location__contains="Dallas"),
"raptor": Team.objects.filter(team_name__contains="Raptor"),
"cityloc": Team.objects.filter(location__contains="city"),
"startT": Team.objects.filter(team_name__startswith="T"),
"abc": Team.objects.order_by('location'),
"cba": Team.objects.order_by('location').reverse(),
"cooper": Player.objects.filter(last_name="Cooper"),
"joshua": Player.objects.filter(first_name="Joshua"),
"nocooper": Player.objects.filter(last_name="Cooper").exclude(first_name="Joshua"),
"wyatt": Player.objects.filter(first_name="Alexander")|Player.objects.filter(first_name="Wyatt"),
"atlanticsoccer" : Team.objects.filter(league__name__contains='atlantic', league__sport__contains="soccer"),
"bostonp" : Player.objects.filter(curr_team__team_name__contains='Penguins'),
"icbc" : Player.objects.filter(curr_team__league__name__contains='International Collegiate Baseball '),
"footballlopez" : Player.objects.filter(curr_team__league__name__contains="American Conference of Amateur Football", last_name__contains="lopez"),
"footballplayer" : Player.objects.filter(curr_team__league__sport__contains="football"),
"sophia" : Team.objects.filter(curr_players__first_name__contains='sophia'),
"sophiale" : Team.objects.filter(league__contains='sophia'),
}
print Team.objects.filter(league__contains='sophia')
return render(request, "leagues/index.html", context)
def make_data(request):
team_maker.gen_leagues(10)
team_maker.gen_teams(50)
team_maker.gen_players(200)
return redirect("index")
index.html just the part you need
<h5>Question 8</h5>
{% for player in sophiale %}
<li>{{player.name}}</li>
{% endfor %}
</ol>
Try this:
League.objects.filter(teams__ all_players__first_name__contains='sophia')
Related
I have posted a question with the same title as this one, everyone can see it from this link
Unfortunately, because that was my first time making a question, some format mistakes were made and that question is closed for the moment. I have edited it and resubmitted for opening again but I don't know how long will that take so I might as well make a new one.
I'm working on a web application for reading novels and currently I'm stuck at a certain part in directing views using urls. I use Django as the back end with PostgreSQL as the database and HTML with bootsrap as front end. I will post my code below:
This is my urls.py (from the project folder):
from django.contrib import admin
from django.urls import path, include
from django.conf import settings
from django.conf.urls.static import static
urlpatterns = [
path('admin/', admin.site.urls),
path('', include('app.urls')),
]
urlpatterns += static(settings.MEDIA_URL, document_root = settings.MEDIA_ROOT)
This is my urls.py (from the app folder):
from django.contrib import admin
from django.urls import path, include
from django.contrib.auth import views as auth_views
from . import views
urlpatterns = [
path('', views.home),
path('book/<slug:book_slug>/<slug:chapter_slug>/', views.detail, name='detail'),
path('genre/<slug:category_slug>', views.category_detail, name='category_detail'),
path('book/<slug:book_slug>', views.book_detail, name='book_detail'),
path('register/', views.register, name="register"),
path('login/',auth_views.LoginView.as_view(template_name="app/login.html"), name="login"),
path('logout/',auth_views.LogoutView.as_view(next_page='/'),name='logout'),
]
This is my models.py:
from django.db import models
# Create your models here.
class Category(models.Model):
name = models.CharField(max_length=50)
slug = models.SlugField(max_length=50, unique=True, blank=True, editable=True)
def __str__(self):
return self.name
class Chapter(models.Model):
chapter = models.Count
chapter_name = models.CharField(max_length=100)
book = models.ForeignKey('Book', on_delete=models.CASCADE, null=True, related_name = 'Books')
detail = models.TextField()
slug = models.SlugField(max_length=100, unique=True, blank=True, editable=True)
def __str__(self):
return self.chapter_name
class Book(models.Model):
title = models.CharField(max_length=100)
slug = models.SlugField(max_length=100, unique=True, blank=True, editable=True)
cover_image = models.ImageField(upload_to= 'images/', blank= True, null = True)
author = models.CharField(max_length=100)
summary = models.TextField()
category = models.ForeignKey('Category', on_delete=models.CASCADE, null = True, related_name = 'books')
#date = models.DateField(auto_now_add=True)
recommended_book = models.BooleanField(default=False)
recommended_book_hot = models.BooleanField(default=False)
recommended_book_new = models.BooleanField(default=False)
recommended_book_finish = models.BooleanField(default=False)
def __str__(self):
return self.title
My views.py:
from django.shortcuts import render
from django.http import HttpResponse
from django.http import HttpResponseRedirect
from .forms import RegistrationForm
from .models import Book, Category, Chapter
from gtts import gTTS
from django.urls import reverse
from django.shortcuts import get_object_or_404
# Create your views here.
def home(request):
recommended_book = Book.objects.filter(recommended_book = True)
recommended_book_hot = Book.objects.filter(recommended_book_hot = True)
recommended_book_new = Book.objects.filter(recommended_book_new = True)
recommended_book_finish = Book.objects.filter(recommended_book_finish = True)
return render(request, 'app/home.html', {'recommended_book': recommended_book, 'recommended_book_hot': recommended_book_hot, 'recommended_book_new': recommended_book_new, 'recommended_book_finish': recommended_book_finish})
def detail(request, book_slug, chapter_slug):
book = get_object_or_404(Chapter, book__slug = book_slug,slug = chapter_slug)
title = book.slug
return render(request, 'app/detail.html', {'detail': book, 'title':title})
def register(request):
form = RegistrationForm()
if request.method == 'POST':
form = RegistrationForm(request.POST)
if form.is_valid():
form.save()
return HttpResponseRedirect('/')
return render(request, 'app/register.html', {'form': form})
def category_detail(request, category_slug):
category = Category.objects.get(slug = category_slug)
books = Category.objects.prefetch_related('books')
return render(request, 'app/genre_detail.html', {'category':category})
def book_detail(request, book_slug):
book = Book.objects.get(slug = book_slug)
book_category = book.category.first()
similar_books = Book.objects.filter(category__name__startswith = book_category)
return render(request, 'app/book_detail.html', {'book': book, 'similar_books': similar_books, 'book_category': book_category})
With the configurations in urls.py, I have managed to go from homepage to a specific novel index page with the url: localhost:8000/book/book.slug then read a chapter using urL:localhost:8000/book/book.slug/chapter.slug, I then place an HTML link to go back to the index page in case I want to stop reading the chapter that goes like this:
<div class="container p-2">
Home /
{{detail.book}}/
{{detail.chapter_name}}
</div>
This is where I'm met with issues as what I have in mind was that when clicked, the link will lead to the index page again which is localhost:8000/book/book.slug. But what actually happened was that it showed a NoReveseMatch error upon the chapter page reload again.
From what I can inferred after seeing the logs, there should have been a slug as an argument for the view Book_detail() to work, such as 'test' (slug for a novel name "Test"). But instead, the argument show a blank '('',)' which made the link failed to direct to Book_detail().
Does anyone know what I did wrong ? Any helps or suggestions are appreciated
Edit 1: The NoReverseMatching error has been fixed but now clicking on the url will return a DoesNotExist at book/chapter.slug error instead.
Edit 2: This question has been answered, you can see the answers below.
Change this to:
{{detail.book}}/
Try this
{{detail`.book}}
The problem about DoesNotExist has been fixed !
I found out that by adding another definition in views.py at detail() that goes like this:
def detail(request, book_slug, chapter_slug):
book = get_object_or_404(Chapter, book__slug = book_slug,slug = chapter_slug)
index = Book.objects.get(slug = book_slug)
title = index.slug
return render(request, 'app/detail.html', {'detail': book, 'title':title})
then add it to the HTML like this:
<div class="container p-2">
Home /
{{detail.book}}/
{{detail.chapter_name}}
</div>
I can now return to the Index page !
Thank you, everyone, for your helps and suggestions. I have also realized that a lot of clumsy mistakes were made and they weren't really that hard to solve, actually. It's just that I overlooked them.
im trying to post the recruitment date of an employee , but i keep having the 400 bad request error and recruitment_date: ["This field is required."] ,after searching i added the Date Formats on the settings but i still have the same error
views.py :
class CreateEmployee(generics.CreateAPIView):
lookup_field= 'pk'
serializer_class = EmployeeSerializer
def get_queryset(self):
return Employee.objects.all()
serializers.py :
class EmployeeSerializer(serializers.ModelSerializer):
url = serializers.SerializerMethodField(read_only=True)
recruitment_date =fields.DateField(format="%Y-%m-%d",input_formats=['%Y-%m-%d'])
class Meta:
model = Employee
fields =['url','id','f_name','l_name','job','telephone','recruitment_date','salary']
def get_url(self,obj):
request = self.context.get("request")
return obj.get_api_url(request=request)
settings.py :
"DATE_INPUT_FORMATS": ["iso-8601","%Y-%m-%d"],
I have the usual home.HomePage() model set up by wagtail by default and this is what it contains:
class HomePage(Page):
advertised_lowest_price = models.FloatField(blank=True, null=True, max_length=20,)
season_year = models.PositiveIntegerField(blank=True, null=True)
season_statement = RichTextField(blank=True, null=True, help_text="THIS MUST BE IN 'h2' TAG! To avoid frontend"
" display irregularities, you must use the"
" H2 tag",
features=['bold', 'italic', 'hr', 'link', 'document-link', 'embed', 'underline',
'strike-through', 'h2', 'h3'],
)
premium_topic = models.CharField(null=True, blank=True, help_text='Premium Products text', max_length=80)
premium_sub_topic = models.CharField(null=True, blank=True, help_text='Premium Products Sub-topic text',
max_length=80)
article_section_topic = models.CharField(null=True, blank=True, max_length=80)
def get_context(self, request):
context = super().get_context(request)
context['home_page'] = HomePage.objects.live().all()
def carousel_products():
carousel_items_list = []
for carousel_item in AdministratorProducts.objects.all():
carousel_items_list.append(carousel_item.is_carousel())
return carousel_items_list
context['carousel_1'] = carousel_products()[0]
return context
content_panels = Page.content_panels + [
FieldPanel('advertised_lowest_price'),
FieldPanel('season_year'),
FieldPanel('season_statement'),
FieldPanel('premium_topic'),
FieldPanel('premium_sub_topic'),
FieldPanel('article_section_topic'),
]
template = 'home/index.html'
def __str__(self):
return self.season_statement
That said,I also have a Carousel mode that serves as a housing for other products that would be on the carousel on the index page > index.html.
This is the model for the Carousel:
class ImageCarousel(Page):
carousel_name = models.CharField(max_length=100, default='ART!')
date_time_stamp = models.DateTimeField(blank=True, null=True, help_text='Date product was added to Carousel.')
class Meta:
verbose_name_plural = 'Images on the Carousel'
def __str__(self):
return self.title
content_panels = Page.content_panels + [
FieldPanel('carousel_name'),
]
template = 'home/index.html'
As you might have noticed, ImageCarousel also writes to the same template as HomePage which is index.html.
At the same time, I have another model from another app that has ImageCarousel as a ForeignKey. Here is the model located at 'ixorabloom_administrator_products/models.py':
class AdministratorProducts(Page):
administrator_product_name = models.CharField(max_length=100)
administrator_product_bio = models.TextField(blank=True, null=True)
administrator_product_primary_genre = models.CharField(max_length=4, choices=ART_GENRES, null=True, blank=True)
administrator_product_secondary_genre = models.TextField(help_text='Comma (,) separated list of secondary art '
'genres',
null=True,
blank=True)
administrator_product_carousel = models.ForeignKey("home.ImageCarousel",
null=True,
blank=True,
on_delete=models.SET_NULL)
administrator_product_carousel_year = models.PositiveIntegerField(help_text="Year to be displayed if this product"
" is on the carousel",
null=True,
blank=True)
administrator_product_date_of_creation = models.DateField(null=True, blank=True, help_text='Date product was made')
administrator_product_website_link = models.URLField(blank=True, null=True, help_text='External website where this'
'product can be found or'
'bought.')
administrator_product_email_address = models.EmailField(blank=True, null=True, help_text='External Mailing site'
'where this product can be'
'ordered.')
administrator_product_picture = models.ForeignKey("wagtailimages.Image",
null=True,
blank=True,
on_delete=models.SET_NULL)
administrator_product_price = models.FloatField(null=True, blank=True)
content_panels = Page.content_panels + [
FieldPanel('administrator_product_name'),
FieldPanel('administrator_product_bio'),
FieldPanel('administrator_product_primary_genre'),
FieldPanel('administrator_product_secondary_genre'),
FieldPanel('administrator_product_carousel'),
FieldPanel('administrator_product_carousel_year'),
FieldPanel('administrator_product_website_link'),
FieldPanel('administrator_product_email_address'),
ImageChooserPanel('administrator_product_picture'),
FieldPanel('administrator_product_price'),
FieldPanel('administrator_product_date_of_creation'),
]
class Meta:
verbose_name_plural = 'Administrator Art Products'
def __str__(self):
return self.administrator_product_name
def is_carousel(self):
if self.administrator_product_carousel:
return True
else:
return False
Looking back at HomePage, there is a get_context() method there. This method actually does a loop to gather products (from the administrator) that have a ForeignKey relationship with ImageCarousel. Here is the method:
def get_context(self, request):
context = super().get_context(request)
context['home_page'] = HomePage.objects.live().all()
def carousel_products():
carousel_items_list = []
for carousel_item in AdministratorProducts.objects.all():
carousel_items_list.append(carousel_item.is_carousel())
return carousel_items_list
context['carousel_1'] = carousel_products()[0]
return context
**You can also find this in ** HomePage().get_context().
Here is the problem. The context does not work on the front-end. I have tested the performance of the carousel_products() function with python manage.py shell and it gets the work done. The issue here is that it isn't showing on the webpage powered by the template: 'home/index.html'.
Here is the section of 'home/index.html' That makes use of the newly added context:
{% if carousel_1 %}
<div class="hs-item">
<div class="hs-left"><img src="{{ carousel_1.administrator_product_picture.url }}" alt=""></div>
<div class="hs-right">
<div class="hs-content">
<div class="price">from ₦{{ carousel_1.administrator_product_price }}</div>
<h2 style="margin-bottom: 0px;">
<span>{{ carousel_1.administrator_product_carousel_year }}</span>
<br>
</h2>
Shop NOW!
</div>
</div>
</div>
{% endif %}
What am I doing wrong? Can I please also get a solution to this problem? Anything that I've not added to the question, please let me know and I will provide the required data.
I also have terribly hard times with context on Wagtail CMS. I really wish someone could clearly explain their template design and use system. My implementations have all been from the Wagtail documentation. Thank you!
The problem with the code is in the HomePage() model. Precisely, get_context().carousel_products(). This is the correction to carousel_products().
def carousel_products():
carousel_items_list = []
for carousel_item in AdministratorProducts.objects.all():
if carousel_item.is_carousel():
carousel_items_list.append(carousel_item)
return carousel_items_list
The problem with the original code was that the for loop was querying each product from AdministratorProducts (i.e AdministratorProducts.objects.all()) and checking if each product was a carousel item. What is returned is either True or False.
In the original code, what was being appended to the carousel_items_list was the returned value of that check (i.e True or False) and not the product or the product's name.
My solution fixes that error in judgment about the performance of the function. Now the function returns the correct data and the templates load the required data.
How can i use my custom form called PayForm inside a template (Post.html) which is the template of a view called Post I tried to point both of the views to the same template but as i was told you can't point two views to the same template so i am currently stuck on this
models.py
from django.db import models
from django.urls import reverse
from PIL import Image
# Create your models here.
class Post(models.Model):
title = models.CharField(max_length=255)
slug = models.SlugField(max_length=255, unique=True)
created = models.DateTimeField(auto_now_add=True)
content = models.TextField(default="---")
current_price = models.IntegerField(default=0)
reduction = models.IntegerField(default=0)
original_price = models.IntegerField(default=0)
Status = models.CharField(max_length=5, default="✓")
img = models.CharField(max_length=255)
sold = models.IntegerField(default=0)
endday = models.CharField(max_length=30, default="apr 27, 2018 16:09:00")
class Meta:
ordering = ['-created']
def __unicode__(self):
return u'%s'% self.title
def get_absolute_url(self):
return reverse('Products.views.post', args=[self.slug])
def __str__(self):
return self.title
class Payment(models.Model):
Author = models.CharField(max_length=255)
Product = models.CharField(max_length=255)
Payment_ID = models.CharField(max_length=255)
Status = models.CharField(max_length=5, default="X")
Review_result = models.CharField(max_length=255, default="Not yet reviewed")
Address = models.CharField(max_length=255, default='')
created = models.DateTimeField(auto_now_add=True)
class Meta:
ordering = ['-created']
def __unicode__(self):
return u'%s'% self.Status
def __str__(self):
return self.Status
views.py
from django.shortcuts import render, render_to_response , get_object_or_404, redirect
from .models import Post
from django.contrib.auth import authenticate, login, logout
from .forms import RegistrationForm, PayForm
def index(request):
posts=Post.objects.all()
return render(request, 'Index.html', {"posts": posts})
def post(request, slug):
return render(request, 'post.html', {'post': get_object_or_404(Post, slug=slug)})
def new_payment(request):
template ='payment.html'
if request.method == 'POST':
form = PayForm(request.POST)
if form.is_valid():
form.save()
return redirect('index')
else:
print('form invalid')
else:
form = PayForm({'Author':request.user.username})
context = {
'form' : form,
}
return render(request, template, context)
forms.py
from django import forms
from django.contrib.auth.models import User
from django.contrib.auth.forms import UserCreationForm
from .models import Payment, Post
class RegistrationForm(UserCreationForm):
email = forms.EmailField(required=True)
first_name = forms.CharField(required=True)
last_name = forms.CharField(required=True)
class Meta:
model = User
fields = (
'username',
'first_name',
'last_name',
'email',
'password1',
'password2',
)
def save(self, commit=True):
user = super(RegistrationForm, self).save(commit=False)
user.first_name = self.cleaned_data['first_name']
user.last_name = self.cleaned_data['last_name']
user.email = self.cleaned_data['email']
if commit:
user.save()
return user
class PayForm(forms.ModelForm):
class Meta:
model = Payment
fields = ['Author', 'Product', 'Payment_ID', 'Address']
If someone can help me with this it would be greatly appreciated
If you have already created new_payment_form.html(or whatever you have called it) you can simply add to the post.html by using the {% include %} tag surrounded with appropriate <form> tags and whatever you need to go with it. The {% include %} essentially copies and pastes all the code from whatever file you have inside the tag. And a general rule, Product means class and product means variable or field.
# new_payment_form.html is the name of your html file.
# template_path is the directory to your template.
<form>
{% include 'template_path/new_payment_form.html' %}
<button> # submit button
</form>
However, you still need to process it in the view.
def post(request, slug):
"""
(all the if: else: stuff)
"""
# Set new_payment product
new_payment = PayForm(initial={'Product': slug})
return render(request, 'post.html', {'post': get_object_or_404(Post, slug=slug), 'new_payment': new_payment})
You will probably rewrite your view, and there are some details to figure out, but that should get you headed in the right direction. You might want to change slug to a product id or pk.
In django I have create query like wise if someone want information:
In district parameter select Pune, then output gives data for pune district only.
for example :
http:127.0.0.1/api/?district=Pune
htt:127.0.0.1:8000/?crop = groundnut
and so on.
Next,I want to create a Html page for my starting django page(index.html)
if I runserver http:127.0.0.1:8000/
display my html file , where Our models fields(paramter) is id and then user submit the question "if" condition will be trigger and searching information for that parameters.
like wise:
District = __________ submit
gives data only for selected district name only
also
Crop = ______________ submit
gives data only for selected crop name only
likewise run this query
http:/api/?crop=groundnut
if user choose crop name is groundnut,
if use choose crop name is guava, then http:/api/?crop=guava query will be run.
So,now I want to create index.html file multiple parameters works.(AND query will apply)
http:/api/district=Pune&crop=groundnut
So, I want to create html page which call to this query and its show me this type
Distrcit : ________ Crop : __________ submit
here is my models.py
from django.db import models
from mongoengine import Document, fields
class Tool(Document):
crop = fields.StringField(required=True)
district = fields.StringField(required=True)
def __str__(self):
return self.crop
def save(self,*args, **kwargs):
super().save(*args, **kwargs)
class Meta:
verbose_name_plural ='tool'
project/urls.py
from django.conf import settings
from django.conf.urls.static import static
from django.conf.urls import include, url
from django.contrib import admin
from app.views import *
from routers import HybridRouter
router = HybridRouter()
router.register(r'tool', ToolViewSet, r"tool")
urlpatterns = [
url(r'^admin/', include(admin.site.urls)),
url(r'^api/', include(router.urls, namespace='api')),
url(r'^$', index_view, {}, name='index'),
]
app/views.py
from django.template.response import TemplateResponse
from rest_framework_mongoengine.viewsets import ModelViewSet as MongoModelViewSet
from app.serializers import *
class ToolViewSet(MongoModelViewSet):
serializer_class = ToolSerializer
my_filter_fields = ('crop', 'district',) # specify the fields on which you want to filter
def get_kwargs_for_filtering(self):
filtering_kwargs = {}
for field in self.my_filter_fields: # iterate over the filter fields
field_value = self.request.query_params.get(field) # get the value of a field from request query parameter
if field_value:
filtering_kwargs[field] = field_value
return filtering_kwargs
def get_queryset(self):
queryset = Tool.objects.all()
filtering_kwargs = self.get_kwargs_for_filtering() # get the fields with values for filtering
if filtering_kwargs:
queryset = Tool.objects.filter(**filtering_kwargs) # filter the queryset based on 'filtering_kwargs'
return queryset
from .models import Tool
from django.shortcuts import render
def index_view(request):
questions=None
if request.GET.get('crop'):
crop = request.GET.get('crop')
questions = Tool.objects.filter(crop__icontains=crop)
district = request.GET.get('district')
query = Tool.object.create(crop=crop, district=district)
query.save()
return render(request, 'index.html',{
'questions': questions,
})
what I have to change in views.py file for index.html to get parameter and gives exact information after user click on submit button ?
index.html
<form method="GET">
Crop: <input type="text" name="crop"><br/>
Taluka: <input type="text" name="taluka"><br/>
<input type="submit" value="Submit" />
</form><br/><br/>
{% for question in questions %}
<p>{{question}}</p>
{% endfor %}
can you help me how to get data and run the query ?
where I need to changes ?
Its a TYPO error in this line :
query = Tool.object.create(crop=crop, district=district)
object should be objects ,like this :
query = Tool.objects.create(crop=crop, district=district)
Update your code like this :
from .models import Tool
from django.shortcuts import render
def index_view(request):
questions=None
if request.GET.get('crop'):
crop = request.GET.get('crop')
questions = Tool.objects.filter(crop__icontains=crop)
district = request.GET.get('district')
query = Tool.objects.create(crop=crop, district=district)
query.save()
return render(request, 'index.html',{
'questions': questions,
})
And, Update the save method of your Tool model like this :
class Tool(Document):
crop = fields.StringField(required=True)
district = fields.StringField(required=True)
def __str__(self):
return self.crop
def save(self,*args, **kwargs):
super(Tool, self).save(*args, **kwargs)
In your index.html file, change {{question}} to {{question.crop}}. You have to refer to the field (in your case crop) on the model you want to render on your page.
Also, the default manager is located at Tool.objects not Tool.object.
In your models.py, super should be super(Tool, self). Also model Tool should inherit from django.db.models.Model. Your fields must be from django.db.models
class Tool(Model):
crop = models.CharField()