django-filer and ManyToMany field

[Martin Kjellberg]

Hi!

First of all, thank you for a fantastic app! It made my life so much simpler in many cases! Gracias!

So, I'm having a model where I would like the file browser to be used (in the admin), but in a ManyToMany field. Simple example:

class Correspondence(models.Model):
    subject = models.CharField(_('subject'), max_length=500)
    body = models.TextField(_('body'))
    files = models.ManyToManyField(** This should be the Filer field **)

How are you guys solving this scenario?

Thank you,
/Martin

[Stefan Foulis]

Hi Martin

Thanks!

The trouble is, that there is no usable ManyToMany widget for filer (yet). What we've done in the past, is a ManyToMany with a custom "through" table (but no extra fields).

Then you can display it with a django.contrib.admin.TabularInlineAdmin.

If you don't now what I am talking about, I could dig out a code example from one of our projects. I just can't recall in what project we did that right now.

Cheers

Stefan

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[Martin Kjellberg]

Excellent Stefan!

I'll try that approach, thank you!

[Marco Silva]

Hey!

Is this feature still in development? i would also like to use the filler models as a many to many, could you suply an example code as i had never used the "through" table?

Cheers
Marco Silva

[Hassan Mian]

Hi Marco,

Please have a look at:

https://docs.djangoproject.com/en/1.11/topics/db/models/#many-to-many-relationships

If we use Martins example the code would look something like this:

class Correspondence(models.Model):
    subject = models.CharField(_('subject'), max_length=500)
    body = models.TextField(_('body'))

    files = models.ManyToManyField(Attachment, through='CorrespondenceAttachment')

class Attachment(models.Model):

    content = FilerImageField()

class CorrespondenceAttachment(models.Model):

    correspondence = models.ForeignKey(Correspondence, on_delete=models.CASCADE)

    attachment = models.ForeignKey(Attachment, on_delete=models.CASCADE)