How do I display my list view in recommended_items? - html

Question

I'd like to show the list's introduction to users, and I've used the Association rule in Django for this project.
views.py
def user_detail(req, id):
AllParcel = Add_Parcel.objects.filter(id=id).first()
df = pd.read_csv('myapp/recommend.csv')
df = df.drop_duplicates().reset_index(drop=True)
df = df.pivot(index='item_id', columns='user_id', values='user_id')
df = df.notnull().astype(int)
frequent_itemsets = apriori(df, min_support=0.5, use_colnames=True)
rules = association_rules(frequent_itemsets, metric="confidence", min_threshold=0.5)
user_loans = LoanParcel.objects.filter(user=req.user)
user_borrowed = [loan.parcel_item.name for loan in user_loans]
recommended_items = []
for item in rules['antecedents']:
if set(item).issubset(set(user_borrowed)):
recommended_items.extend(list(Add_Parcel.objects.filter(name__in=rules[rules['antecedents'] == item]['consequents'].tolist()[0])))
context = {
"AllParcel": AllParcel,
"recommended_items" : recommended_items,
}
return render(req,'pages/user_detail.html',context)
I wanted to render recommended_items to display similar to Add_Parcel using data from Add_Parcel's database to display, but when I put the display command in HTML, it returned as a blank value. How should I fix it?
user_detail.html
<h2>Recommended Items</h2>
<ul>
{% for parcel in recommended_items %}
<li>{{ parcel.name }} ({{ parcel.nametype }}) - {{ parcel.description }}</li>
{% endfor %}
</ul>
recommend.csv
item_id,user_id
1,1
1,2
1,3
1,4
1,5
1,6
1,7
3,8
3,9
3,10
3,11
1,12
1,11
1,10
2,9
2,8
2,7