Cycle in Scrapy ItemLoader - scrapy

Question

https://doc.scrapy.org/en/latest/topics/loaders.html#using-item-loaders-to-populate-items
from scrapy.loader import ItemLoader
from myproject.items import Product
def parse(self, response):
l = ItemLoader(item=Product(), response=response)
l.add_xpath('name', '//div[#class="product_name"]')
l.add_xpath('name', '//div[#class="product_title"]')
l.add_xpath('price', '//p[#id="price"]')
l.add_css('stock', 'p#stock]')
l.add_value('last_updated', 'today') # you can also use literal values
return l.load_item()
But if I get from webpage 2 names, prices, etc, how to add it to l.load_item() ?
Because I added the cycle but if in the end, I write return cycle will work only once.
How to right to do it?

Answer 1

Just replace return l.load_item() by yield l.load_item()
example:
for block in response.css('.blocks'):
product_name = block.css('div.product_name').extract_first()
product_title = block.css('div.product_title').extract_first()
price = block.css('p#price').extract_first()
stock = block.css('p#stock').extract_first()
yield Product(
product_name=product_name,
product_title=product_title,
price=price,
stock=stock,
last_updated='today'
)
If you use the ItemLoader, you have to reload your variable for each iteration
for block in blocks:
l = ItemLoader(item=Product(), response=response)
...
yield l.load_item()
"In the callback function, you parse the response (web page) and return either dicts with extracted data, Item objects, Request objects, or an iterable of these objects." See scrapy documentation
yield is used to generate an iterable of your Product Item objects