code: def edit(community):
      
      form = EditCommunityForm(formdata=request.values, obj=community)
      deleteform = DeleteCommunityForm()
      ctx = mycommunities_ctx()
      ctx.update({
          'form': form,
          'is_new': False,
          'community': community,
          'deleteform': deleteform,
      })
  
      if form.validate_on_submit():
          for field, val in form.data.items():
              setattr(community, field, val)
  
          file = request.files.get('logo', None)
          if file:
              if not community.save_logo(file.stream, file.filename):
                  form.logo.errors.append(_(
                      'Cannot add this file as a logo. Supported formats: '
                      'PNG, JPG and SVG. Max file size: 1.5 MB.'))
  
          if not form.logo.errors:
              db.session.commit()
              flash("Community successfully edited.", category='success')
              return redirect(url_for('.edit', community_id=community.id))
  
      return render_template(
          current_app.config['COMMUNITIES_EDIT_TEMPLATE'],
          **ctx
      )
docs: Create or edit a community.