Hm, I think the functionality to do this -- at least if I understand
correctly what I read
here:
http://stackoverflow.com/questions/1113096/django-dump-data-for-a-single-model
I'd be fine dumping the data for the entire app -- but the reason I did it
this way is because when I do this, the category_id field is empty for all
parts in the Part table. If I look at the database contents, it should not
be blank -- so not sure why that's happening. So that's why I wanted to
delve deeper...
So maybe my actual question should be why is the category_id many-to-many
field showing up blank consistently when I do a dumpdata??
On Tuesday, July 3, 2012 5:55:32 PM UTC-4, ke1g wrote:
>
> In fact, I think dumpdata takes an app name, not a table or model name.
>
> On Tue, Jul 3, 2012 at 5:54 PM, Bill Freeman <ke1g...@gmail.com> wrote:
> > I think that you have to dumdata one or both of the models at the ends
> > of the many to many,
> > and the join table will come along for free.
> >
> > On Tue, Jul 3, 2012 at 3:21 PM, natasha.ba...@utoronto.ca
> > <natasha.ba...@utoronto.ca> wrote:
> >> Hi All,
> >>
> >> I'm trying to dump the contents of a table which is the mapping for a
> >> many-to-many field.
> >>
> >> The table is called Part and it has a ManytoManyField called
> >> category_id.
> >>
> >> When I run python manage.py dumpdata store.part_category_id >
> >> file.json
> >>
> >> I get the error Error: Unable to serialize database: Category matching
> >> query does not exist.
> >>
> >> I have validated that all values in the table are valid.
> >>
> >> The table is defined as follows --> id: integer PRIMARY KEY
> >> unipart_id: integer category_id: integer
> >>
> >> Also, when I run dumpdata on the table (python manage.py dumpdata
> >> store.part > file.json), the data is dumped without an error message
> >> but the category_id field is consistently empty in the output.
> >>
> >> Any thoughts on what I'm doing wrong?
> >>
> >> Thanks,
> >> Natasha
> >>
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