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ITAC | Jinja & Bootstrap
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racterub
May 26, 2020
Programming
1
95
ITAC | Jinja & Bootstrap
ITAC | Jinja & Bootstrap
racterub
May 26, 2020
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Transcript
Jinja & Bootstrap Racterub@ITAC 1
Overview • Basic Jinja Templates • Bootstrap (我只會⼤概介紹) • Basic
login page (這個請⾃⾏實作,最後會帶⼀次) 2
但是, 我還是先確認一下每一個 人都有跟上進度 3
https://reurl.cc/z8OqEV 這是這次簡報的網址 4
Jinja • ⼀種模版引擎 • Flask 的預設前端,你也可以將 Jinja 替換成 Vue.js, AngularJS
..etc • 前幾年資安競賽蠻愛考的 • 可以阻擋 XSS 5
Jinja • {% .. %} statement • {# .. #}
comment • {{ .. }} variables • # .. # line statements (statement 的美化版) 6
Jinja • 從 Flask 丟參數去 Jinja • 字串 / 數字
• {{ variable }} • 串列 • {{ variable[idx] }} • 字典 • {{ variable[key] }} 7
Jinja • 語法 • if {% if <expression> %} …
{% else if <expression> %} … {% else %} … {% endif %} 8
Jinja • for • Jinja 在 for 迴圈裡⾯會有特別的變數讓你使⽤ {% for
i in arr %} … {% endfor %} 9
10
Jinja • Filters • Jinja 內建的功能,可以做許多好⽤的處理 11
▲https://jinja.palletsprojects.com/en/2.11.x/templates/#list-of-builtin-filters 12
Jinja • Python • • Jinja • {{ “ hello
world “|trim|title }} • 13
14
Jinja • Tests • 通常⽤來過濾資料 • 15
Jinja • ( a = 123) • 16
Jinja • 模板繼承 • Jinja 裡⾯很重要的⼀個功能 • 先講語法 • block
{% block <name> %} … {% endblock %} 17
Jinja • 當你的網站有設計主題,讓許多側邊欄、頂部導航列需要 在每⼀⾴都顯⽰ • 你可能想說複製貼上就好了 • 但是當你在 Facebook ⼯作時
• Facebook 的 codebase 有 62,000,000 ⾏ (2017) • 會先複製到死吧 18
Jinja •以這個側邊欄為例 •那我就可以先寫好側邊欄的 code •然後在從其他頁面做引入 •模板繼承這種東⻄就被做出來 了 19
實作辣 1. 將 GET 參數 a 的數字產⽣⼀個 0 到 a
的 list,並且在 jinja 裡⾯作出以下格式 (e.g. ?a=123 => [0,1,…123]) 1. 1, 2, 3, 4, 5, …… 2. 將第⼀個實作修改,如果數字可以整除 5,則顯⽰在⾴⾯ 上。同樣需要相同格式 20
Boostrap • 由 Twitter 內部的⼀群⼯程師維護,⽬前已開源 • 可以⽤來做響應式⾴⾯ (RWD) 21
22