Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p>Here is an example that does not run inside a custom command, but runs the Reactor manually and creates a new Crawler <a href="http://doc.scrapy.org/en/latest/topics/practices.html#running-multiple-spiders-in-the-same-process">for each spider</a>:</p> <pre><code>from twisted.internet import reactor from scrapy.crawler import Crawler # scrapy.conf.settings singlton was deprecated last year from scrapy.utils.project import get_project_settings from scrapy import log def setup_crawler(spider_name): crawler = Crawler(settings) crawler.configure() spider = crawler.spiders.create(spider_name) crawler.crawl(spider) crawler.start() log.start() settings = get_project_settings() crawler = Crawler(settings) crawler.configure() for spider_name in crawler.spiders.list(): setup_crawler(spider_name) reactor.run() </code></pre> <p>You will have to design <a href="http://doc.scrapy.org/en/latest/topics/signals.html">some signal system</a> to stop the reactor when all spiders are finished.</p> <p>EDIT: And here is how you can run multiple spiders in a custom command:</p> <pre><code>from scrapy.command import ScrapyCommand from scrapy.utils.project import get_project_settings from scrapy.crawler import Crawler class Command(ScrapyCommand): requires_project = True def syntax(self): return '[options]' def short_desc(self): return 'Runs all of the spiders' def run(self, args, opts): settings = get_project_settings() for spider_name in self.crawler.spiders.list(): crawler = Crawler(settings) crawler.configure() spider = crawler.spiders.create(spider_name) crawler.crawl(spider) crawler.start() self.crawler.start() </code></pre>
    singulars
    1. This table or related slice is empty.
    1. POLocally run all of the spiders in Scrapy
      singulars
      1. PTQuestion
    1. PTAnswer
    1. USSteven Almeroth
    1. USSteven Almeroth
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. POLocally run all of the spiders in Scrapy
      singulars
      1. PTQuestion
    1. This table or related slice is empty.
    1. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTAcceptedByOriginator
    3. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    1. COThank you, this is exactly what I was trying to do.
      singulars
      1. PO
      1. USBlender
    2. COHow to I star the program?
      singulars
      1. PO
      1. USuser1787687
    3. COPut the code in a text editor and save as `mycoolcrawler.py`. In Linux you probably can run `python mycoolcrawler.py` from the command line in the directory you saved it in. In Windows maybe you can just double-click it from file-manager.
      singulars
      1. PO
      1. USSteven Almeroth
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload