Jinja2 FastAPI:来自Python模板的不同数量的输入项

# FastAPI 视图函数
from fastapi import FastAPI
from fastapi.responses import HTMLResponse
from jinja2 import Template

app = FastAPI()

@app.get("/items/", response_class=HTMLResponse)
async def read_items():
    items = ["Apple", "Banana", "Cherry"]
    template = Template("""
    <ul>
    {% for item in items %}
        <li>{{ item }}</li>
    {% endfor %}
    </ul>
    """)
    return template.render(items=items)

# 在模板中添加条件判断
template = Template("""
<ul>
{% for item in items %}
    {% if item != 'Banana' %}
        <li>{{ item }}</li>
    {% endif %}
{% endfor %}
</ul>
""")

# 传递字典
data = {
    "fruits": ["Apple", "Banana"],
    "vegetables": ["Carrot", "Broccoli"]
}

template = Template("""
<ul>
{% for category, items in data.items() %}
    <h2>{{ category }}</h2>
    {% for item in items %}
        <li>{{ item }}</li>
    {% endfor %}
{% endfor %}
</ul>
""")