我正在尝试根据用户输入执行数据库搜索。以下代码中的 DBresults 函数旨在捕获存储在“ranumber”中的输入并对特定记录执行 SQL 搜索。我似乎无法正常工作。我已经尝试了很多产生各种错误的事情,但我得到的最新错误是“TypeError:并非所有参数都在字符串格式化期间转换”。 我在这里错过了什么?
def connectToDB():
psycopg2.connect('dbname=reportingdb user=rai_gui password=Rad1oInd host=10.100.51.42')
def DBresults(ranumber):
conn = psycopg2.connect('dbname=reporting user=rai_user password=Rad1odsfdInd host=10.100.47.42')
cur = conn.cursor(cursor_factory=psycopg2.extras.DictCursor)
cur.execute("SELECT * FROM radio_archive_index_gui.radio_archive_index_gui WHERE rai_number= %s", (ranumber))
searchresults = cur.fetchall()
print (searchresults)
####Index Page
@app.route('/', methods=['GET', 'POST'])
@app.route('/index', methods=['GET', 'POST'])
def index():
exception = ""
try:
connectToDB
except:
exception = 'Failure to connect to db'
form = StaffNames()
if not exception:
if form.validate_on_submit():
query = {
'staff': dict(staff_choices).get(form.staff.data),
'ranumber': form.ranumber.data
}
return redirect(url_for('results', **query))
return render_template(
'index.html', title='Search Page', exception=exception, form=form
)
#####Results Page
@app.route('/results')
def results():
ranumber = request.args.get('ranumber', None)
staff = request.args.get('staff', None)
DBresults()
return render_template(
'results.html', title='Results', staff=staff, ranumber=ranumber
)
如果有帮助,这是我的 form.py 文件:
staff_choices=[("", ""), ('1', 'John Jones'), ('2', 'Chris Hughes'), (' 3', 'Lyn bear')]
class StaffNames(Form):
ranumber = StringField('ranumber', validators=[DataRequired()])
staff = SelectField('staff',choices=staff_choices,validators=[DataRequired()])
尝试编辑
cur.execute("SELECT * FROM radio_archive_index_gui.radio_archive_index_gui WHERE rai_number= %s", (ranumber))
到
cur.execute("SELECT * FROM radio_archive_index_gui.radio_archive_index_gui WHERE rai_number= %s", (ranumber,))
(ranumber) 需要采用元组格式才能使字符串格式化正常工作。