Question

安装db：

pip install flask-mysqldb

使用xampp创建我的数据库localy 设置配置

from flask import Flask, render_template, flash, redirect, url_for, request, 
logging
from wtforms import Form, StringField, TextAreaField, validators
from flask_mysqldb import MySQL

app = Flask (__name__)
# Config MySQL
app.config['MYSQL_HOST'] = 'localhost'
app.config['MYSQL_USER'] = 'root'
app.config['MYSQL_PASSWORD'] = ''
app.config['MYSQL_DB'] = 'todo'
app.config['MYSQL_CURSORCLASS'] = 'DictCursor'

# init MYSQL
mysql = MySQL(app)
@app.route('/')
def index():
return render_template('index.html')


@app.route('/add')
def task():
return render_template('add.html')

# Task Form Class
class TaskForm(Form):
name = StringField('Name', [validators.Length(min=1, max=55)])
description = TextAreaField('Description', [validators.Length(min=5)])

# Add task
@app.route('/add', methods=['GET', 'POST'])
def add():
    form = TaskForm(request.form)
    if request.method == 'POST' and form.validate():
    name = form.name.data
    description = form.description.data

    # Create Cursor
    cur = mysql.connection.cursor()

    # Execute
    cur.execute("INSERT INTO todotask(name, description) VALUES(%s, %s)",
    (name, description))

    # Commit to DB
    mysql.connection.commit()

    #Close connection
    cur.close()

    flash('the task created ', 'success')

    return redirect(url_for('add'))

return render_template('index.html', form=form)
if __name__ == '__main__':
app.run(debug = True)

当我运行服务器时，它正常工作并在向数据库插入任何内容时为post方法提供200状态，但是当我尝试检查没有插入或保存在数据库中时，如何使其工作？

Answer 1

看起来你正在做正确的事情，除了处理路线的奇怪方式。

提供：

您正在使用默认参数在开发模式下运行Flask，即开发服务器侦听localhost:5000，
index.html包含指向http://localhost:5000/add，
添加后，您想重定向回http://localhost:5000。

此代码应该有效：

from flask import Flask, render_template, flash, \
redirect, url_for, request, logging
from wtforms import Form, StringField, TextAreaField, validators
from flask_mysqldb import MySQL

app = Flask (__name__)
# Config MySQL
app.config['MYSQL_HOST'] = 'localhost'
app.config['MYSQL_USER'] = 'root'
app.config['MYSQL_PASSWORD'] = ''
app.config['MYSQL_DB'] = 'todo'
app.config['MYSQL_CURSORCLASS'] = 'DictCursor'

# TODO Update secret key
app.secret_key = 'UPDATETHISPART'

# init MYSQL
# mysql = MySQL(app)


# Task Form Class
class TaskForm(Form):
    name = StringField('Name', [validators.Length(min=1, max=55)])
    description = TextAreaField('Description', [validators.Length(min=5)])


@app.route('/')
def index():
    return render_template('index.html')


# Add task
@app.route('/add', methods=['GET', 'POST'])
def add():
    form = TaskForm(request.form)
    if request.method == 'POST' and form.validate():
        name = form.name.data
        description = form.description.data

        # Create Cursor
        cur = mysql.connection.cursor()

        # Execute
        cur.execute("INSERT INTO todotask(name, description) VALUES(%s, %s)", (name, description))

        # Commit to DB
        mysql.connection.commit()

        # Close connection
        cur.close()

        flash('the task created ', 'success')

        return redirect(url_for('index'))

    return render_template('add.html', form=form)


if __name__ == '__main__':
    app.run(debug=True)

我更新的内容：

删除/add的第一条路线，因为它似乎没必要，
添加了密钥，
重新组织了添加/add路由处理重定向/呈现的方式。

通过查看数据库插入处理，它看起来很好。可能路线确实干扰了你的意图。

Answer 2

尝试这样做：

services:
  camping.helper_controller:
      class: CampingBundle\Controller\HelperController
      arguments: ["@doctrine.orm.entity_manager"]

将python连接到flask-mysqldb

2 个答案: