Re: SVG widget for the Admin

On 3/06/2021 4:00 pm, Derek wrote:
> >
> > E.g.
> >
> > class MyModel():
> >     svg_text = CharField()
>
> in my case it is ...
>
> class Chemical(models.Model):
>     ...
>     ddstructure = models.TextField(
>         null=True,
>         blank=True,
>         verbose_name="2D structure",
>     )
>

The above is unchanged.

# admin
class ChemicalAdmin(admin.ModelAdmin):

    def _ddstructure(self, obj):
        return mark_safe(obj.ddstructure)
    ...
    fieldsets = (
        (
            None,
            {
                "fields": (
                    "ddstructure",        # displays svg code
                    "_ddstructure",
                    ...
            }
    ),

FYI it works perfectly as a column in the list display - but I don't
need it there, rather in the page for the chemical.

This is what happens if it is included in the fieldsets "fields" roster.


FieldError at /admin/chemical/chemical/17/change/

Unknown field(s) (_ddstructure) specified for Chemical. Check fields/fieldsets/exclude attributes of class ChemicalAdmin.

Request Method: GET
Request URL: http://localhost:8088/admin/chemical/chemical/17/change/
Django Version: 3.2.3
Exception Type: FieldError
Exception Value:

Unknown field(s) (_ddstructure) specified for Chemical. Check fields/fieldsets/exclude attributes of class ChemicalAdmin.

Exception Location:
D:\Users\mike\envs\xxai\lib\site-packages\django\contrib\admin\options.py,
line 712, in get_form
Python Executable: D:\Users\mike\envs\xxai\Scripts\python.exe
Python Version: 3.8.3


Cheers

Mike


> >
> >     def _the_svg(self):
> >         return """<svg width="100" height="100">%s</svg>""" %
> > self.svg_text
> >         _the_svg.allow_tags = True
>


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