一、宏的定义
- 把常用功能抽取出来，实现可重用
- 简单理解：宏≈函数
- 宏可以写在单独的html文件中
二、基础使用
app.py
from flask import Flask,render_template,render_template_string,g,url_for
app = Flask(__name__)
@app.route('/macro')
def macro():
"""模板中宏的使用"""
return render_template('macro.html')
if __name__ == '__main__':
app.run(debug=True)
macro.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>模板中宏的使用</title>
<style type="text/css">
.input-control{
border: 1px solid #ff0000;
}
</style>
</head>
<body>
<form action="">
{% macro input(name,type='text',value = '')%}
<div>
<input class = "input-control class2" type = "{{ type }}" name = "{{ name }}" value = "{{ value }}">
</div>
{% endmacro %}
<!-- 用户名 username -->
{{ input('username',value = "admin") }}
<!-- 密码 password -->
{{ input('password',type = "password") }}
<!-- 年龄age -->
{{ input('age',type = "number") }}
<!-- 注释的代码，与上面宏的写法表达方式一致
<div>
<input class = "input-control class2" type = "text" name = "username" value = "">
</div>
<div>
<input class = "input-control class2" type = "password" name="password">
</div>
<div>
<input class = "input-control class2" type = "number" name="age">
</div>
-->
</form>
</body>
</html>
三、文件中宏的使用
image.png
image.png
froms.html
<!--定义宏-->
{% macro input(name,type='text',value = '')%}
<div>
<input class = "input-control class2" type = "{{ type }}" name = "{{ name }}" value = "{{ value }}">
</div>
{% endmacro %}
macro.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>模板中宏的使用</title>
<style type="text/css">
.input-control{
border: 1px solid #ff0000;
}
</style>
</head>
<body>
<form action="">
<!-- 引入宏 -->
{% from 'froms.html' import input %}
<!-- 用户名 username -->
{{ input('username',value = "admin") }}
<!-- 密码 password -->
{{ input('password',type = "password") }}
<!-- 年龄age -->
{{ input('age',type = "number") }}
<!--
<div>
<input class = "input-control class2" type = "text" name = "username" value = "">
</div>
<div>
<input class = "input-control class2" type = "password" name="password">
</div>
<div>
<input class = "input-control class2" type = "number" name="age">
</div>
-->
</form>
</body>
</html>
image.png
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