Need example in scrapy on how to get a link from one page, then follow this link, get more info from the linked page, and merge back with some data from first page.
More information on passing the meta data and request objects is specifically described in this part of the documentation:
http://readthedocs.org/docs/scrapy/en/latest/topics/request-response.html#passing-additional-data-to-callback-functions
This question is also related to: Scrapy: Follow link to get additional Item data?