Question

I have custom plugin with the next structure.
models.py looks like

    class ProductDescription(models.Model):
        name = models.CharField(max_length=30)
        icon = models.ImageField(upload_to="installation_image", blank=True, null=True)
        description = models.TextField(blank=True, null=True)

        def __unicode__(self):
            return self.name

    class ProductPlugin(CMSPlugin):
            product = models.ForeignKey(ProductDescription)

    class ProductSpecification(models.Model):
        product = models.ForeignKey(ProductDescription)
        specification = models.TextField(blank=True, null=True)

    class InstallationStep(models.Model):
        product = models.ForeignKey(ProductDescription)
        step = models.TextField(blank=True, null=True)
        image = models.ImageField(upload_to="installation_image", blank=True, null=True)

admin.py

    class InstallationStepInline(admin.StackedInline):
        model = InstallationStep
        extra = 0

    class ProductSpecificationInline(admin.StackedInline):
        model = ProductSpecification
        extra = 0

    class DeviceAdmin(admin.ModelAdmin):
        inlines = [ProductSpecificationInline ,
        InstallationStepInline]

    admin.site.register(ProductDescription, DeviceAdmin)

and cms_plugin.py

    class CMSProductPlugin(CMSPluginBase):
        model = ProductPlugin
        name = _("Product Description")
        render_template = "product_description.html"

        def render(self, context, instance, placeholder):
            context.update({
                'product':instance.product,
                'object':instance,
                'placeholder':placeholder
            })

            return context

    plugin_pool.register_plugin(CMSProductPlugin)

So, each product could have none or several specifications and installation steps.
And the question is how can I render those specification and steps in template?
I know how to get data for the ProductDescription class. It is like

  <div class="test">{{ product.description }}</div>

but how can I extract other data? i guess it should be something like

    {% for steps in product.InstallationStep.all %}
        <div class="test">{{ steps.step }}</div>
    {% endfor %}

but it does not do anything =(

Thanks in advance!

Answer 1

I think you just need:

product.InstallationStep_set.all

Since you have a ForeignKey in the InstallationStep model class, django puts the _set method into the referenced class.

You can experiment with this in the django shell. Templates will fail silently if you try doing foo.bar and there’s no bar in foo…