[英]Rails: How to iterate over products from hash? (Amazon API / Vacuum)
在Rails上扩展:如何从哈希中提取值? (Amazon API / Vacuum) -如何使这些新挖掘的值可供我的视图使用?
目前正在获取 :
undefined method `image_url' for #<Hash:0x848402e0>
Extracted source (around line #5):
<%= link_to image_tag(product.image_url), product.url %>
main_controller.rb :
class MainController < ApplicationController
def index
request = Vacuum.new('GB')
request.configure(
aws_access_key_id: 'ABCDEFGHIJKLMNOPQRST',
aws_secret_access_key: '<long messy key>',
associate_tag: 'lipsum-20'
)
params = {
'SearchIndex' => 'Books',
'Keywords'=> 'Ruby on Rails',
'ResponseGroup' => "ItemAttributes,Images"
}
raw_products = request.item_search(query: params)
hashed_products = raw_products.to_h
# puts hashed_products['ItemSearchResponse']['Items']['Item'].collect{ |i| i['ItemAttributes']['Title'] }
# puts hashed_products['ItemSearchResponse']['Items']['Item'].collect{ |i| i['DetailPageURL'] }
# puts hashed_products['ItemSearchResponse']['Items']['Item'].collect{ |i| i['LargeImage']['URL'] }
@products = []
@products = hashed_products['ItemSearchResponse']['Items']['Item'].each do |item|
product = OpenStruct.new
product.name = item['ItemAttributes']['Title']
product.url = item['DetailPageURL']
product.image_url = item['LargeImage']['URL']
@products << product
end
end
end
index.html.erb :
<h1>Products from Amazon Product Advertising API</h1>
<% if @products.any? %>
<% @products.each do |product| %>
<div class="product">
<%= link_to image_tag(product.image_url), product.url %>
<%= link_to product.name, product.url %>
</div>
<% end %>
<% end %>
我不会将整个Amazon哈希转换为OpenStruct
。 而且由于product.name
为nil
,因此无法在其上进行查找。
相反,只需遍历亚马逊商品,将其分配给您的产品,然后添加到@products
数组中:
@products = []
hashed_products['ItemSearchResponse']['Items']['Item'].each do |item|
product = OpenStruct.new
product.name = item['ItemAttributes']['Title']
@products << product
end
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.