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Passing value from parent model to inline when adding a new inline record

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0

I'm setting up an inline model using generic foreign key using py3+django 2.x. There's a common value called "client" in both child and parent model which is a foreign key linked to client table.

When adding a child item, i want the new child item to take automatically the "client" value saved in its parent. I have tried to google its answer without finding a solution...

#Filestorage management model
class ChildModel(models.Model):
object_id = models.PositiveIntegerField()
content_type = models.ForeignKey(ContentType, on_delete=models.CASCADE)
of = GenericForeignKey('content_type', 'object_id') 
#
fileName = models.CharField(max_length=50)
client = models.ForeignKey(ClientCtrl, on_delete=models.CASCADE) 


#Filestorage management inline
class ChildModelLine(GenericTabularInline):
model = ChildModel
ct_field_name = 'content_type'
id_field_name = 'object_id'
fieldsets = (
 (None, 
 'fields': ('id','client','fileName',...),
 ), 
)
readonly_fields = ('id','client')


class ParentModelAdmin(admin.ModelAdmin):

inlines = [ChildModelLine] 
...
def save_formset(self, request, form, formset, change):
 instances = formset.save(commit=False)
 for instance in instances:
 if not instance.pk:
 instance.oper = request.user
 instance.client = self.ParentModel.client
 instance.save()
 formset.save_m2m()

When adding a inline item, i want to pass the existing client value key from parent to child.

django foreign-keys inline generic-foreign-key

share|improve this question

edited Mar 23 at 5:00

James Z

11.2k71936

asked Mar 22 at 18:19

Makodo YAMAZAKIMakodo YAMAZAKI

12

add a comment | 

0

I'm setting up an inline model using generic foreign key using py3+django 2.x. There's a common value called "client" in both child and parent model which is a foreign key linked to client table.

When adding a child item, i want the new child item to take automatically the "client" value saved in its parent. I have tried to google its answer without finding a solution...

#Filestorage management model
class ChildModel(models.Model):
object_id = models.PositiveIntegerField()
content_type = models.ForeignKey(ContentType, on_delete=models.CASCADE)
of = GenericForeignKey('content_type', 'object_id') 
#
fileName = models.CharField(max_length=50)
client = models.ForeignKey(ClientCtrl, on_delete=models.CASCADE) 


#Filestorage management inline
class ChildModelLine(GenericTabularInline):
model = ChildModel
ct_field_name = 'content_type'
id_field_name = 'object_id'
fieldsets = (
 (None, 
 'fields': ('id','client','fileName',...),
 ), 
)
readonly_fields = ('id','client')


class ParentModelAdmin(admin.ModelAdmin):

inlines = [ChildModelLine] 
...
def save_formset(self, request, form, formset, change):
 instances = formset.save(commit=False)
 for instance in instances:
 if not instance.pk:
 instance.oper = request.user
 instance.client = self.ParentModel.client
 instance.save()
 formset.save_m2m()

When adding a inline item, i want to pass the existing client value key from parent to child.

django foreign-keys inline generic-foreign-key

share|improve this question

edited Mar 23 at 5:00

James Z

11.2k71936

asked Mar 22 at 18:19

Makodo YAMAZAKIMakodo YAMAZAKI

12

add a comment | 

I'm setting up an inline model using generic foreign key using py3+django 2.x. There's a common value called "client" in both child and parent model which is a foreign key linked to client table.

When adding a child item, i want the new child item to take automatically the "client" value saved in its parent. I have tried to google its answer without finding a solution...

#Filestorage management model
class ChildModel(models.Model):
object_id = models.PositiveIntegerField()
content_type = models.ForeignKey(ContentType, on_delete=models.CASCADE)
of = GenericForeignKey('content_type', 'object_id') 
#
fileName = models.CharField(max_length=50)
client = models.ForeignKey(ClientCtrl, on_delete=models.CASCADE) 


#Filestorage management inline
class ChildModelLine(GenericTabularInline):
model = ChildModel
ct_field_name = 'content_type'
id_field_name = 'object_id'
fieldsets = (
 (None, 
 'fields': ('id','client','fileName',...),
 ), 
)
readonly_fields = ('id','client')


class ParentModelAdmin(admin.ModelAdmin):

inlines = [ChildModelLine] 
...
def save_formset(self, request, form, formset, change):
 instances = formset.save(commit=False)
 for instance in instances:
 if not instance.pk:
 instance.oper = request.user
 instance.client = self.ParentModel.client
 instance.save()
 formset.save_m2m()

When adding a inline item, i want to pass the existing client value key from parent to child.

django foreign-keys inline generic-foreign-key

share|improve this question

edited Mar 23 at 5:00

James Z

11.2k71936

asked Mar 22 at 18:19

Makodo YAMAZAKIMakodo YAMAZAKI

12

#Filestorage management model
class ChildModel(models.Model):
object_id = models.PositiveIntegerField()
content_type = models.ForeignKey(ContentType, on_delete=models.CASCADE)
of = GenericForeignKey('content_type', 'object_id') 
#
fileName = models.CharField(max_length=50)
client = models.ForeignKey(ClientCtrl, on_delete=models.CASCADE) 


#Filestorage management inline
class ChildModelLine(GenericTabularInline):
model = ChildModel
ct_field_name = 'content_type'
id_field_name = 'object_id'
fieldsets = (
 (None, 
 'fields': ('id','client','fileName',...),
 ), 
)
readonly_fields = ('id','client')


class ParentModelAdmin(admin.ModelAdmin):

inlines = [ChildModelLine] 
...
def save_formset(self, request, form, formset, change):
 instances = formset.save(commit=False)
 for instance in instances:
 if not instance.pk:
 instance.oper = request.user
 instance.client = self.ParentModel.client
 instance.save()
 formset.save_m2m()

share|improve this question

edited Mar 23 at 5:00

James Z

11.2k71936

asked Mar 22 at 18:19

Makodo YAMAZAKIMakodo YAMAZAKI

12

share|improve this question

edited Mar 23 at 5:00

James Z

11.2k71936

asked Mar 22 at 18:19

Makodo YAMAZAKIMakodo YAMAZAKI

12

edited Mar 23 at 5:00

James Z

11.2k71936

edited Mar 23 at 5:00

James Z

11.2k71936

asked Mar 22 at 18:19

Makodo YAMAZAKIMakodo YAMAZAKI

12

asked Mar 22 at 18:19

Makodo YAMAZAKIMakodo YAMAZAKI

12