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ScrapyでItem Pipelineにsettingsを渡す方法

Posted at

from_settingsだけ定義すると、Item Pipelineごして有効にならない。
下記のように、__init__でちゃんと定義し直す必要がある。

class MySQLStorePipeline(object):

    @classmethod
    def from_settings(cls, settings):
        return cls(settings.get('DB_SETTING'))

    def __init__(self, db_settings):
        db.init_session(db_settings)

    def process_item(self, item, spider):
        shop = Shop(
            brand_id=1,
            name=item['name'],
            address=item['address'])
        db.db_session.add(shop)
        db.db_session.commit()
        return item
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