多个按钮的刮擦FormRequest

Question

我正在尝试从表单中获取第二个按钮，但似乎无法正确地获得FormRequest。

下面是表单的HTML代码：

<form action="/search/misc/set_serp_view" method="POST" class="btn-group">
        <button class="btn btn-white active" type="submit" name="serp_view" value="serp-cards">
            <i class="fa fa-usd"></i> Prices
        </button>
        <button class="btn btn-white " type="submit" name="serp_view" value="serp-grid">
            <i class="fa fa-table"></i> Specs
        </button>
    </form>

我用了这个密码，

class ProductSpider(scrapy.Spider):
    name='nameCode'
    start_urls = ['https://octopart.com/electronic-parts/integrated-circuits-ics' ]

    def parse(self,response):
        return FormRequest.from_response(response, formxpath="//form[@class='btn-group']/button[@value='serp-grid']",callback = self.scrape_pages)

    def scrape_pages(self,response):
        open_in_browser(response)        

但它在默认情况下选择了serp-。

Answer 1

这招很有魅力

    def parse(self,response):
        return FormRequest.from_response(response, formxpath="//form[@class='btn-group']", clickdata={"value":"serp-grid"},callback = self.scrape_pages)