Re: SVG widget for the Admin

[Mike Dewhirst]

On 1/06/2021 11:44 pm, Derek wrote:

You haven't defined where in the admin interface you want this image to be displayed?  A table?

I have not tried this, but could you not create an additional field on your model that returns the HTML-encoding needed to display the SVG?

Derek, thanks for responding. I tried your suggestion and had no success.

Where in the admin? Just among a normal roster of fields. The svg is a molecular structure and the image needs to appear for example just after the molecular formula. I collect the actual svg code via a public API on saving the record.

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",
    )

    def _the_svg(self):

        _the_svg.allow_tags = True

        return """<svg width="100" height="100">%s</svg>""" % self.svg_text

Not sure where this should live for the Admin to call it and display the image.

I am not sure about editing visually, however - I would expect that would require a specialised widget.

It is read-only in all cases.





Thanks again

Mike

I was thinking a widget might be needed just for display. The svg code arrives complete with tags so really all it needs is a mechanism to persuade the admin it is safe to render as is. I haven't seen such a (probably insecure) "feature" previously. I've looked through the docs but haven't found it yet.

HTH
Derek


On Tuesday, 1 June 2021 at 03:28:59 UTC+2 Mike Dewhirst wrote:

    I collect the svg source for an image from a public API and store
    it in
    a models.TextField. I have no difficulty displaying it in a normal
    view
    and my own template. Nothing special, it just emerges. I don't
    even need
    a 'safe' filter.

    However, I really want to display such images in the Admin. At this
    stage all it displays is the svg source.

    What is the correct way to make the image appear in the Admin?

    Do I need a special field inheriting from TextField? Do I need a
    special
    widget? Is there a way to mark admin field values as safe?

    Thanks for any hints

    Mike


    been signed with my private key. If you import my public key you can
    automatically decrypt my signature and be sure it came from me. Just
    ask and I'll send it to you. Your email software can handle signing.


--

-- Signed email is an absolute defence against phishing. This email has You received this message because you are subscribed to the Google Groups "Django users" group. To unsubscribe from this group and stop receiving emails from it, send an email to django-users+unsubscr...@googlegroups.com <mailto:django-users+unsubscr...@googlegroups.com>. To view this discussion on the web visit https://groups.google.com/d/msgid/django-users/520bf296-ec68-48ad-8fe2-f106823efac2n%40googlegroups.com <https://groups.google.com/d/msgid/django-users/520bf296-ec68-48ad-8fe2-f106823efac2n%40googlegroups.com?utm_medium=email&utm_source=footer>.

--
Signed email is an absolute defence against phishing. This email has
been signed with my private key. If you import my public key you can
automatically decrypt my signature and be sure it came from me. Just
ask and I'll send it to you. Your email software can handle signing.


--
You received this message because you are subscribed to the Google Groups "Django 
users" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to django-users+unsubscr...@googlegroups.com.
To view this discussion on the web visit 
https://groups.google.com/d/msgid/django-users/4fc10ce8-eccf-8bab-67fb-8dfb93a5b6e2%40dewhirst.com.au.

OpenPGP_signature
Description: OpenPGP digital signature