How to Query DB using .object in Django - django

Question

I have few categories. Say Electronics and Toy. and i have mutiple shops in a mall. A shop is saved with a foreign key(category). Now in the navigation bar.. i want to list stores based on their categories. Thanks in anticipation
models.py
class ShopCategories(models.Model):
category = models.CharField(max_length=50, unique=True,)
def __str__(self):
return self.category
class NewShop(models.Model):
category = models.ForeignKey(ShopCategories)
name = models.CharField(max_length=100, unique=True)
tagline = models.CharField(max_length=50, default='Enter tagline here2')
description = models.TextField(default='enter shop description')
def __str__(self):
return self.name
views.py
def basefile(request):
shop_cat = NewShop.objects.filter(category_id=1)
shop_name = NewShop.objects.filter(name=shop_cat)
return render_to_response('base.html', {'Shopname':shop_name, 'Shopcat':shop_cat})
base.html
{% for category_id in Shopcat %}
<li>{{ Shopname }}</l>
{% endfor %}

Answer 1

To get all store use below query.
shopcat = NewShop.objects.filter(category__category="category name")
base.html
{% for shop in shopcat %}
<li>{{ shop.name }}</l>
{% endfor %}

Answer 2

Try do this:
urls.py
urlpatterns = [
...
url(r'^get_shops_by_category/(?P<id_category>\d+)/$', views.get_shops_by_category, name = "get_shops_by_category"),
]
views.py
def basefile(request):
categories = ShopCategories.objects.all()
shop_name = NewShop.objects.filter(name=shop_cat)
return render_to_response('base.html', {'Shopname':shop_name, 'categories': categories})
def get_shops_by_category(request, **kwargs):
categories = ShopCategories.objects.all()
current_category = ShopCategories.objects.get(id = kwargs['id_category']
shops = NewShop.objects.filter(category = current_category)
return render_to_response('base.html', {'shops': shops, 'categories': categories, 'current_category' current_category})
base.html
...
<select>
{% for category in categories %}
{% if current_category %}
<option value="{{ category.id }}">{{ category.category }}</option>
{% else %}
<option value="{{ category.id }}" onclick="location.href = '{% url 'your_app:your_url' category.id %}'">{{ category.category }}</option>
{% endfor %}
</select>
{% if shops %}
<table>
<thead>
<tr>
<th>Shop name</th>
<th>Actions</th>
</tr>
</thead>
<tbody>
{% for shop in shops %}
<tr>
<td>{{ shop.name }}</td>
<td><!-- Buttons or links, ect ... --></td>
</tr>
{% endfor %}
</tbody>
</table>
{% endif %}
...

Answer 3

Thanks Guys. I know this isn't the best method but i was able to fix it this way
models.py
class ShopCategories(models.Model):
category = models.CharField(max_length=50, unique=True)
def __str__(self):
return self.category
class NewShop(models.Model):
category = models.ForeignKey(ShopCategories)
name = models.CharField(max_length=100, unique=True)
tagline = models.CharField(max_length=50, default='Enter tagline here2')
description = models.TextField(default='enter shop description')
def __str__(self):
return self.name
views.py
def basefile(request):
cat1 = NewShop.objects.filter(category_id=1)
cat2 = NewShop.objects.filter(category_id=2)
cat3 = NewShop.objects.filter(category_id=3)
cat4 = NewShop.objects.filter(category_id=4)
shop_name1 = ShopCategories.objects.filter(id=1)
shop_name2 = ShopCategories.objects.filter(id=2)
shop_name3 = ShopCategories.objects.filter(id=3)
shop_name4 = ShopCategories.objects.filter(id=4)
return render_to_response('base.html', {'Shop_cat1':cat1, 'Shop_cat2':cat2, 'Shop_cat3':cat3,
'Shop_cat4':cat4,'shop_name1':shop_name1, 'shop_name2':shop_name2,
'shop_name3':shop_name3, 'shop_name4':shop_name4})
base.html
{% for shop_name1 in shop_name1 %}
<li>
<h3> {{ shop_name1 }}</h3>
</li>
{% endfor %}
{% for Shop_cat1 in Shop_cat1 %}
<li>{{ Shop_cat1 }}</li>
{% endfor %}