fetching data using query from a particular table and showing it in admin side of django

Question

I am working on a Django project and I want to fetch data from particular table and show it in the admin side.

I am having a Company model which I have registered in admin using admin.site.register(Company, Company_Admin) . Now I want to just get all the companies after querying them from the table and just show the result in the admin site.

class Company(models.Model):
    name = models.CharField(default=None,max_length=200)
    description = models.TextField(default=None)
    url = models.CharField(max_length=200)
    published = models.BooleanField()
    createdOn = models.DateTimeField(default=datetime.utcnow)
    updatedOn = models.DateTimeField(default=datetime.utcnow)
    keywords = models.ManyToManyField(Keyword)

    def __unicode__(self):
       return self.text

class CompanyAdmin(admin.ModelAdmin): 
    list_display = ['name', 'url', 'description', 'published', 'createdOn', 'updatedOn']
    list_filter = ['name']
    search_fields = ['name']
    filter_horizontal = ('keywords', )

admin.site.register(Company, CompanyAdmin)

Now I want to create an option in admin panel that will show me all the companies that are published, that is, do not even show the non-published companies.

Answer 1

Try to add list_filter in CompanyAdmin on 'published':

list_filter = ['name','published']

So, You can find one pane at right side, in which you can just filter out as you want. (I'm considering that you're not overriding default admin template.)

Answer 2

According to the docs on ModelAdmin.list_filter , you can try adding the field name to that attribute. This should give you a new filter option in the right sidebar of the change view.

class CompanyAdmin(admin.ModelAdmin): 
    ...
    list_filter = ['name', 'published']
    ...

---

If, however, you want to hide all non-published instances completely from the admin (I don't know if that is the case, I don't fully understand you question), then you can modify the ModelAdmin.get_queryset() method .

class CompanyAdmin(admin.ModelAdmin): 
    ...
    def get_queryset(self, request):
        return super().get_queryset(request).filter(published=True)
    ...