通过在python /瓶数据库结果

Question

我得到以下结果从我的数据库设置循环，

{ 
    "workbases": [ 
    { 
     "workbase": "WB 1" 
    }, 
    { 
     "workbase": "WB 2" 
    }, 
    { 
     "workbase": "WB 3" 
    }, 
    { 
     "workbase": "WB 4" 
    }, 
    { 
     "workbase": "WB 5" 
    }, 
    { 
     "workbase": "WB 6" 
    }, 
    { 
     "workbase": "WB 7" 
    }, 
    { 
     "workbase": "WB 8" 
    }, 
    { 
     "workbase": "WB 9" 
    }, 
    { 
     "workbase": "WB 10" 
    }, 
    { 
     "workbase": "WB 11" 
    }, 
    { 
     "workbase": "WB 12" 
    }, 
    { 
     "workbase": "WB 13" 
    }, 
    { 
     "workbase": "WB 14" 
    }, 
    { 
     "workbase": "WB 15" 
    }, 
    { 
     "workbase": "WB 16" 
    } 
    ] 
} 

这些结果来自这个代码，

staff = tables.staff_list 

sel = select([staff.c.workbase]).distinct(staff.c.workbase).select_from(staff).where(staff.c.workbase != "") 

workbases = FlaskApp.db_connect().execute(sel).fetchall() 
workbases = [utils.rowdict(a) for a in workbases] 

workbases = jsonify(workbases=workbases) 

return render_template('leave_request.html', hours_left=100, workbases=workbases) 

如何去翻翻模板中的workbases数据，我都试过了，

{% for w in workbases %} 
    <option value="">{{ w.workbase }}</option> 
{% endfor %} 

，也

{% for w in workbases.workbases %} 
    <option value="">{{ w.workbase }}</option> 
{% endfor %} 

但niether他们使我的选择输入的任何选项（代码嵌套在select标签

Answer 1

你试过

{% for w in workbases['workbases'] %} 
    <option value="">{{ w['workbase'] }}</option> 
{% endfor %} 

Answer 2

如果你从你的Python文件中删除线workbases = jsonify(workbases=workbases)。正如cricket007所述，jsonify是一个flask.Response()对象，用于将来自Flask的JSON数据发送到类似XHR调用或API调用的对象。这是一个HTTP响应，将包括内容标题等。

一旦你删除这个，你描述的第二个Jinja2方法应该工作。

{% for w in workbases.workbases %} 
    <option value="">{{ w.workbase }}</option> 
{% endfor %} 

这将产生相同的结果：

{% for w in workbases['workbases'] %} 
    <option value="">{{ w['workbase'] }}</option> 
{% endfor %} 

因为Jinja2的不是Python的。看到文档的更多详细信息：

http://jinja.pocoo.org/docs/dev/templates/#variables