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[Docs] Rephrase Rule docs

This commit is contained in:
Eugenio Lacuesta 2019-04-01 16:15:03 -03:00
parent 07ff9248a5
commit 8ebbc731b2
1 changed files with 4 additions and 4 deletions
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8
docs/topics/spiders.rst
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@ -380,13 +380,13 @@ Crawling rules
defines how links will be extracted from each crawled page. Each produced link will
be used to generate a :class:`~scrapy.http.Request` object, which will contain the
link's text in its ``meta`` attribute.
The link text can be accessed from the callback method though ``response.meta['link_text']``
``callback`` is a callable or a string (in which case a method from the spider
object with that name will be used) to be called for each link extracted with
the specified link_extractor. This callback receives a response as its first
argument and must return a list containing :class:`~scrapy.item.Item` and/or
:class:`~scrapy.http.Request` objects (or any subclass of them).
the specified link extractor. This callback receives a :class:`~scrapy.http.Response`
as its first argument and must return either a single instance or an iterable of
:class:`~scrapy.item.Item`, ``dict`` and/or :class:`~scrapy.http.Request` objects
(or any subclass of them).
.. warning:: When writing crawl spider rules, avoid using ``parse`` as
callback, since the :class:`CrawlSpider` uses the ``parse`` method