Re: django select related select field in template form

[Melvyn Sopacua]

http://django-autocomplete-light.readthedocs.io/en/master/tutorial.html#filtering-results-based-on-the-value-of-other-fields-in-the-form

On Tue, Sep 19, 2017 at 7:53 PM, Anuj Sharma  wrote:
> I'm working in Django 1.11
>
> I have three apps, country, state and address
>
> state model is associated with country by foreign key and address is
> associated with state with a foreign key.
>
> country/models.py
>
> class Country(models.Model):
> name = models.CharField(max_length=100)
> code = models.CharField(max_length=50)
>
> class Meta:
> db_table = 'countries'
>
> def __str__(self):
> return self.name
>
>
>
>
> state/models.py
>
> class State(models.Model):
> country = models.ForeignKey(Country, on_delete=models.CASCADE)
> name = models.CharField(max_length=100)
> code = models.CharField(max_length=50)
>
> class Meta:
> db_table = 'states'
>
> def __str__(self):
> return self.name
>
>
>
> address/models.py
>
> class Address(models.Model):
> line_1 = models.CharField(max_length=200)
> line_2 = models.CharField(max_length=200)
> city = models.CharField(max_length=200)
> state = models.ForeignKey(State, on_delete=models.PROTECT)
> postal_code = models.CharField(max_length=15)
>
> class Meta:
> db_table = 'addresses'
>
> def __str__(self):
> return '%s, %s, %s, %s' % (self.line_1, self.line_2, self.city,
> self.state)
>
>
>
> Since one country can have multiple states, I want user to be able to select
> state after selecting country, which will list related/associated states
> while adding/editing address.
>
> I also want this feature in /admin as app is registered to admin too.
>
> Is there any simple and better way to do this?
>
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Melvyn Sopacua

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django select related select field in template form

[Anuj Sharma]

I'm working in *Django 1.11*

I have three apps, *country*, *state* and *address*

*state* model is associated with *country* by foreign key and *address* is 
associated with *state* with a foreign key.

*country/models.py*

class Country(models.Model):
name = models.CharField(max_length=100)
code = models.CharField(max_length=50)

class Meta:
db_table = 'countries'

def __str__(self):
return self.name




*state/models.py*

class State(models.Model):
country = models.ForeignKey(Country, on_delete=models.CASCADE)
name = models.CharField(max_length=100)
code = models.CharField(max_length=50)

class Meta:
db_table = 'states'

def __str__(self):
return self.name



*address/models.py*

class Address(models.Model):
line_1 = models.CharField(max_length=200)
line_2 = models.CharField(max_length=200)
city = models.CharField(max_length=200)
state = models.ForeignKey(State, on_delete=models.PROTECT)
postal_code = models.CharField(max_length=15)

class Meta:
db_table = 'addresses'

def __str__(self):
return '%s, %s, %s, %s' % (self.line_1, self.line_2, self.city, 
self.state)



Since one country can have multiple states, I want user to be able to 
select state after selecting country, which will list related/associated 
states while adding/editing address.

I also want this feature in */admin* as app is registered to admin too.

*Is there any simple and better way to do this?*

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