RomanNum3ral
/
scrapy
mirror of https://github.com/scrapy/scrapy.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

[files-pipeline] update docs with note about settings 

for subclasses.
This commit is contained in:
Pawel Miech 2016-06-15 15:49:11 +02:00 committed by Paul Tremberth
parent 516618752b
commit d9a9f76ca0
1 changed files with 12 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
docs/topics/media-pipeline.rst
View File

@ -191,9 +191,10 @@ For the Images Pipeline, set :setting:`IMAGES_URLS_FIELD` and/or
If you need something more complex and want to override the custom pipeline
behaviour, see :ref:`topics-media-pipeline-override`.
.. note:: If you have multiple image pipelines inheriting from ImagePipeline and you want to have different settings in different pipelines
you can set setting keys preceded with uppercase name of your pipeline class. E.g. if your pipeline is called
MyPipeline and you want to have custom IMAGES_URLS_FIELD you define setting MYPIPELINE_IMAGES_URLS_FIELD.
If you have multiple image pipelines inheriting from ImagePipeline and you want to have different settings in different pipelines
you can set setting keys preceded with uppercase name of your pipeline class. E.g. if your pipeline is called
MyPipeline and you want to have custom IMAGES_URLS_FIELD you define setting MYPIPELINE_IMAGES_URLS_FIELD and your custom
settings will be used.
Additional features
@ -218,6 +219,14 @@ specifies the delay in number of days::
The default value for both settings is 90 days.
If you have pipeline that subclasses FilesPipeline and you'd like to have different setting
for it you can set setting keys preceded by uppercase class name. E.g. given pipeline class
called MyPipeline you can set setting key:
MYPIPELINE_FILES_EXPIRES = 180
and pipeline class MyPipeline will have expiration time set to 180.
.. _topics-images-thumbnails:
Thumbnail generation for images