根据模型渲染 Flask 表

Question

我的应用包含不同的 db.models 例如。（客户相机......）。我想根据调用的模型动态地用数据填充我的模板“tables.html”。

我成功进入了 headers 但我很难填充 table 的内容。

通常数据会由 {{ data.cust_name }} 或 {{ data.cam_name }} 等填充，但显然在我的情况下它不起作用。

如果有人能指出正确的方向，我将不胜感激？

models.py

class Customers(db.Model):
    cust_id = db.Column(db.Integer, primary_key=True)
    cust_name = db.Column(db.String, unique=True, nullable=False) ....

 def __repr__(self):
        return f"Customers( '{self.cust_name}','{self.cust_address}','{self.cust_zip}','{self.cust_city}','{self.cust_phone}','{self.cust_email}','{self.cust_active}',' {self.cust_timestamp.strftime('%d/%m/%Y %H:%M:%S')}')"

routes.py

 table = val
    match table:
        case "Customers":
            tableName = Customers
            tbl_prefix = "cust_"
        case "Cameras":
            tableName = Cameras
            tbl_prefix = "cam_"
        case "Endpicts":
            tableName = Endpicts
            tbl_prefix = "ep_"
        case "Extcalpoints":
            tableName = Extcalpoints
            tbl_prefix = "ecp_"
        case "Extrinsics":
            tableName = Extrinsics
            tbl_prefix = "ec_"
        case "Intrinsics":
            tableName = Intrinsics
            tbl_prefix = "ic_"
        case "Pumps":
            tableName = Pumps
            tbl_prefix = "pmp_"
        case "Rawpicts":
            tableName = Rawpicts
            tbl_prefix = "rp_"
        case "Stations":
            tableName = Stations
            tbl_prefix = "pst_"
        case "Settings":
            tableName = Settings
            tbl_prefix = "set_"
        case "Users":
            tableName = Users
            tbl_prefix = "usr_"
        case "Visits":
            tableName = Visits
            tbl_prefix = "vis_"
        case _:
            return redirect(url_for('login')) 
    cur = conn.cursor()
 #column headers
    try:
        columns=tableName.__table__.columns
        headings=[]
        for c in columns:
            heading=c.name.replace(tbl_prefix,"")
            headings.append(heading)
    except:
        conn.rollback()

    #columns
    if tableName == Users:
        try:
            cur.execute("SELECT * FROM " + tableName +" ORDER BY id")
            data = cur.fetchall()
        except:
            conn.rollback()
    else:
        try:
            n=[]
            data =  tableName.query.all()
            
        except:
            conn.rollback()

return render_template('tables.html', title=val, prefix=tbl_prefix, headings= headings,data=data, username=current_user.usr_name)

table.html

...
<table id="table" class="table table-hover">
            <thead>
                <tr class="theader">
                    {% for header in headings %}
                    <th class="table-cell"> {{header}} </th>

                    {% endfor %}
                    <th></th>
                    <th></th>
                </tr>
            </thead>
            
            <tbody class="tbody">
                {% for row in data %}
                

                <tr class="table-row" row_id="{{row[0]}} ">
                    {%for row in data %}
                    
                    
                    <td>
                        {% if row %}
                        <div input readonly="" class="row_data" edit_type="click"> {{ data.cust_name }}</div>
                        {% else %}
                        <div input readonly="" class="row_data" edit_type="click"> &nbsp;</div>
                        {% endif %}
                    </td>
                    {% endfor %}
                    <td>
                        <a id="btn_edit" class="btn_edit" row_id="{{row[0]}}"><i class="fa fa-pencil fa-1x"></i></a>
                        <a id="btn_save" class="btn_save" row-id="{{row[0]}}"><i class="fa fa-check fa-1x"></i></a>
                        <a id="btn_cancel" class="btn_cancel" row-id="{{row[0]}}"><i class="fa fa-xmark fa-1x"></i></a>
                        <a id="btn_delete" class="btn_delete" row-id="{{row[0]}}"><i class="fa fa-trash-o fa-1x"></i></a>
                    </td>
                </tr>
                {% endfor %}
            </tbody>
        </table>
...

Answer 1

我认为您的模板有问题。数据是来自任何 table 的 object 的数组。并对其进行两次迭代是行不通的。尝试迭代 headers 两次并像 dict

一样访问 object

<table id="table" class="table table-hover">
    <thead>
        <tr class="theader">
            {% for header in headings %}
            <th class="table-cell"> {{header}} </th>

            {% endfor %}
            <th></th>
            <th></th>
        </tr>
    </thead>
    
    <tbody class="tbody">
        {% for row in data %}
        
        {% set data_row = row.__dict__ %}

        <tr class="table-row" row_id="{{data_row[prefix+'id']}} ">
            {%for header in headings %}
            
            
            <td>
                {% if data_row[prefix+header] %}
                <div input readonly="" class="row_data" edit_type="click"> {{ data_row[prefix+header] }}</div>
                {% else %}
                <div input readonly="" class="row_data" edit_type="click"> &nbsp;</div>
                {% endif %}
            </td>
            {% endfor %}
            <td>
                <a id="btn_edit" class="btn_edit" row_id="{{data_row[prefix+'id']}}"><i class="fa fa-pencil fa-1x"></i></a>
                <a id="btn_save" class="btn_save" row-id="{{data_row[prefix+'id']}}"><i class="fa fa-check fa-1x"></i></a>
                <a id="btn_cancel" class="btn_cancel" row-id="{{data_row[prefix+'id']}}"><i class="fa fa-xmark fa-1x"></i></a>
                <a id="btn_delete" class="btn_delete" row-id="{{data_row[prefix+'id']}}"><i class="fa fa-trash-o fa-1x"></i></a>
            </td>
        </tr>
        {% endfor %}
    </tbody>
</table>

根据模型渲染 Flask 表

Render Flask tables depending on the model

html

python

flask-sqlalchemy