《Django 5 By Example》学习第5天，p105-p164总结，总计60页。
一、技术总结
1.文章标签功能
Django自带django-taggit。
2.自定义template tags
3.roadmap功能
4.RSS功能
5.full-text搜索功能
这里使用的是Postgresql,使用pip install psycopg安装后，执行"python manage.py migarte"会报ModuleNotFoundError: No module named 'psycopg2'错误。应该按照文档使用pip install "psycopgbinary,pool"进行安装。
二、英语总结(生词：4)
1.agnostic
p147, Although Django is a database-agnostic web framework, it provides a module that supports part of the rich feature set offered by PostgreSQL, which is not offered by other databases that Django supports.
(1)agnostic: a-("not") + *gno-("to know")。adj. neutral.
2.stem
p156, Stemming is the process of reducing words to their word stem, base, or root form.
(1)stem: *sta-("stand, be firm").
adj. central structure of plant(植物的茎干)。这里是一种比喻意义的用法,意为"central part of sth/fundamental part of sth (词干提取)"。
3.boost
p159, We can boost specific vectors so that more weight is attributed to them when ordering results by relevancy.
vt. to increase or improve sth.
4.trigram
p160, Another search approach is trigram similarity.
n. anothe term for trigraph.
三、其它
chapter 03简评：本章介绍了一些常见的功能，但这些功能都是基于Django的admin去实现，不是很通用，本人选择快速过一遍，了解有哪些库及其用法，不做深入学习。
四、参考资料
1. 编程
(1) Antonio Melé，《Django 5 By Example》：https://book.douban.com/subject/37007362/
2. 英语
(1) Etymology Dictionary：https://www.etymonline.com
(2) Cambridge Dictionary：https://dictionary.cambridge.org
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