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# -*- coding: utf-8 -*-
import scrapy
from scrapy.spiders import CrawlSpider, Rule
from scrapy.linkextractors import LinkExtractor
from scrapy import Selector
import config
import datetime
from database.models import Nevrax
from dateutil.relativedelta import *
import logging
class NevraxSpider(CrawlSpider):
name = "nevrax_updater"
custom_settings = {
'ITEM_PIPELINES': {
'crawler.nevrax.pipelines.NevraxPipeline': 0
}
}
allow_domains = [config.NEVRAX_URL]
datas = Nevrax.select(Nevrax.url).dicts()
datas_array = []
for value in datas:
datas_array.append(value['url'])
start_urls = datas_array
def start_requests(self):
for url in self.start_urls:
logging.info(url)
try:
page = Nevrax.get(Nevrax.url == url)
if page.date_updated < datetime.datetime.now()+relativedelta(weeks=-1):
yield scrapy.Request(url, callback=self.parse_url, dont_filter=True)
except Nevrax.DoesNotExist:
yield scrapy.Request(url, callback=self.parse_url, dont_filter=True)
continue
def parse_url(self, response):
sel = Selector(response)
yield {
'url': response.url,
'title': response.css('title::text').extract_first(),
'content': ''.join(sel.select("//div[@class='bodya']//text()").extract()).strip(),
'content_length': len(response.body),
'date_updated': datetime.datetime.now()
}
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