how do i import images from the image model to a home page in django?

First, in your model you can give a related_name field like :

class Product_image(models.Model):
    image = models.ImageField(upload_to='uploads/')
    product = models.ForeignKey(Product, on_delete=models.CASCADE, related_name="product_images)

    def __str__(self):
        return f'{self.product.title} image'

Then you can access the product’s images in template like:

{% for product in products %}
     <a href="{% url 'product-detail' product.id %}"> </a>
 {% for image in product.product_images.all %}
    <img alt="" src="{{ image.image.url }}">
 {% endfor %}
{% endfor %}

PS: You dont have to return all Product_image quesryset from the view

Expanding on the answer, if you want to order the images there are different approaches you can take:

Method1:

class Product_image(models.Model):
    image = models.ImageField(upload_to='uploads/')
    product = models.ForeignKey(Product, on_delete=models.CASCADE, related_name="product_images)
    time_created = models.DateTimeField(null=True, blank=True)

    def __str__(self):
        return f'{self.product.title} image'
   
    class Meta:
        ordering = ['time_created'] 

This will order the query set from first created to last . If you don’t want to add a time created field you can also choose to order by id.

Method2:

Add a property to your Product model:

    class Product:
           ....
    @property
    def sorted_image_set(self):
        return self.product_images.order_by('time_created')

Then you can access this property from the template

  {% for image in product.sorted_image_set %}

Method 3 :

Creating a custom template tag to support order_by in template

@register.filter
def order_by(queryset, args):
    args = [x.strip() for x in args.split(',')]
    return queryset.order_by(*args)

Then you can do :

{% for image in product.product_images|order_by:"time_created" %}

After the list has been ordered you can access it just by the array indexes like for example images[0] or images[1]