Django UpdateView and Createview

[Rupam Hazra]

Hi,

I have working in a TaskManagement Sytem where i have project module and technology module.

class ProjectMaster(models.Model):
    name=models.CharField(max_length=255,blank=True,null=True)
    description=models.CharField(max_length=255,blank=True,null=True)
    is_agreement_sent=models.BooleanField(default=False)
    is_invoice_create=models.BooleanField(default=False)
    is_invoice_sent=models.BooleanField(default=False)
    is_paid=models.BooleanField(default=False)
    status=models.BooleanField(default=True)
    is_deleted=models.BooleanField(default=False)
    created_at=models.DateTimeField(auto_now_add=True)
    created_by = models.ForeignKey(User, on_delete=models.CASCADE,related_name='createdUser',blank=True,null=True)
    updated_at=models.DateTimeField(auto_now_add=True)
    updated_by=models.ForeignKey(User, on_delete=models.CASCADE, related_name='UpdUser',blank=True,null=True)
    #technology_master = models.ForeignKey(TechnologyMaster, on_delete=models.CASCADE, related_name='technologies', )

    def __str__(self):
        return str(self.name)

class TechnologyMaster(models.Model):
    #projectmaster = models.ForeignKey(ProjectMaster,on_delete=models.CASCADE)
    name=models.CharField(max_length=255,blank=True,null=True)
    status = models.BooleanField(default=True)
    is_deleted = models.BooleanField(default=False)
    created_at = models.DateTimeField(auto_now_add=True)
    created_by = models.ForeignKey(User, on_delete=models.CASCADE,blank=True, null=True,related_name='created_by')
    updated_at = models.DateTimeField(auto_now_add=True)
    updated_by = models.ForeignKey(User, on_delete=models.CASCADE,blank=True, null=True,related_name='updated_by')
    def __str__(self):
        return str(self.id)+'-'+ self.name

Here one functionality is one project has multiple technologies so i have made one mapping table below

class ProjectTechnologyMapping(models.Model):
    project_master = models.ForeignKey(ProjectMaster, on_delete=models.CASCADE, related_name='projects')
    technology_master = models.ForeignKey(TechnologyMaster, on_delete=models.CASCADE, related_name='technologies')
    status = models.BooleanField(default=True)
    is_deleted = models.BooleanField(default=False)
    created_at = models.DateTimeField(auto_now_add=True)
    created_by = models.ForeignKey(User, on_delete=models.CASCADE,blank=True,null=True,related_name='pro_tech_created_user')
    updated_at = models.DateTimeField(auto_now_add=True)
    updated_by = models.ForeignKey(User, on_delete=models.CASCADE,blank=True,null=True,related_name='pro_tech_updated_user')
    def __str__(self):
        return str(self.id)

So, my question is how add and update using django createview,updateview (generic view) using templates.

[Ryan Nowakowski]

Take a look at https://docs.djangoproject.com/en/2.1/topics/class-based-views/generic-editing/

[Deepak Kumar]

> return str(self.id)+'-'+ self.nameHere one functionality is one project has multiple technologies so i have made one mapping table belowclass ProjectTechnologyMapping(models.Model):

> project_master = models.ForeignKey(ProjectMaster, on_delete=models.CASCADE, related_name='projects')
> technology_master = models.ForeignKey(TechnologyMaster, on_delete=models.CASCADE, related_name='technologies')
> status = models.BooleanField(default=True)
> is_deleted = models.BooleanField(default=False)
> created_at = models.DateTimeField(auto_now_add=True)
> created_by = models.ForeignKey(User, on_delete=models.CASCADE,blank=True,null=True,related_name='pro_tech_created_user')
> updated_at = models.DateTimeField(auto_now_add=True)
> updated_by = models.ForeignKey(User, on_delete=models.CASCADE,blank=True,null=True,related_name='pro_tech_updated_user')
> def __str__(self):

> return str(self.id)So, my question is how add and update using django createview,updateview (generic view) using templates.

[Okware Aldo]

Ryan's suggestion should give you a starting point.

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[Rupam Hazra]

Hi all,

I know and understand how update view working but in my case how to implement on my case.

Please suggest.;

[Sidnei Pereira]

Hi,

I don't know if I got it right , but you want to add/update as many instance of Technologies as you want when creating/updating a Project, right? Like when you use an inline on Django's admin.

For that you could user Django Formsets. Here is simple gist for you to get a feeling of it:

https://gist.github.com/neara/6209563

An observation about your models, since you want a Projetct to have many Technologies you don't need a junction table. You could just user a ForeignKey model field on the TechnologyMaster model that refers to ProjectMaster model. The way you doing it know it's is actually a many to many relationship. For a better understanding of it in the context of how Django works with database modeling, see: 

https://docs.djangoproject.com/en/2.1/topics/db/models/#relationships

https://docs.djangoproject.com/en/2.1/topics/db/examples/

[Ryan Nowakowski]

Hrrmmm... that documentation link should've answered most of your
questions. It would be easier to help you if you can say specifically
what you're confused about.

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[Rupam Hazra]

Thanks, it is working....

[Sidnei Pereira]

Could you point out what exactly was the problem and how did you solve it? A proper feedback is usually useful for those who were helping or those with the same issue.

Thanks in advance.