無法使用PyMongo進行日期查詢

Question

問題是以下。 我有一個mongo集合，其中包含變量jobdate，這是我現在應該假設的字符串，但是，我需要以以下方式運行路由來查詢所述變量：

@app.route('/active_jobs/<jobdate>', methods = ['GET'])
def get_a_date(jobdate):

ajobs = mongo.db.ajobs

output = []

for q in ajobs.find({'jobdate':jobdate}):

    output.append ({
    'jobdate' : q['jobdate'], 'jobtime' : q['jobtime'],'plant': q['plant'],
    'po': q['po'], 'company': q['company'], 'client': q['client'],
    'jobaddress': q['jobaddress'], 'm3': q['m3'], 'use': q['use'],
    'formula': q['formula'], 'placement': q['placement'],
    'badmix1': q['badmix1'], 'badmix2': q['badmix2'], 'badmix3': q['badmix3'],
    'confirmation': q['confirmation'],'status': q['status']
    })

return jsonify({'result' : output})

這里的問題是，當我在Postman上嘗試GET請求時，我只是得到一個空的{'result'：} json對象。 我懷疑查詢結構本身可能不是問題，而是日期格式。

我的POST請求如下，如何格式化日期變量以使其可查詢。

@app.route('/active_jobs/new', methods=['POST'])
def add_job():

ajobs = mongo.db.ajobs

jobdate = request.json['jobdate']# date of job
jobtime = request.json['jobtime']# time of job
plant = request.json['plant']# plant for job
po = request.json['po']# production order
company = request.json['company']# client company name
client = request.json['client']# person in charge
jobaddress = request.json['jobaddress']#job address
use = request.json['use']# concrete use in site
m3 = request.json['m3']#job volume
formula = request.json['formula']#job formula
placement = request.json['placement']#type of placement
badmix1 = request.json['badmix1']#batch admixture add-on
badmix2 = request.json['badmix2']#batch admixture add-on
badmix3 = request.json['badmix3']#batch admixture add-on
confirmation = request.json['confirmation']#level of confirmation for job
status = request.json['status']#job status

ajob_id = ajobs.insert({
'jobdate' : jobdate, 'jobtime' : jobtime, 'plant': plant,
'po' : po, 'company' : company, 'client' : client, 'jobaddress' : jobaddress,
'use' : use, 'm3' : m3, 'formula' : formula, 'placement' : placement,
'badmix1' : badmix1, 'badmix2' : badmix2, 'badmix3' : badmix3,
'confirmation' : confirmation, 'status' : status
})

new_job = ajobs.find_one({'_id' : ajob_id})

output = ({
'jobdate' : new_job['jobdate'], 'jobtime' : new_job['jobtime'],'plant': new_job['plant'],
'po': new_job['po'], 'company': new_job['company'], 'client': new_job['client'],
'jobaddress': new_job['jobaddress'], 'm3': new_job['m3'], 'use': new_job['use'],
'formula': new_job['formula'], 'placement': new_job['placement'],
'badmix1': new_job['badmix1'], 'badmix2': new_job['badmix2'], 'badmix3': new_job['badmix3'],
'confirmation': new_job['confirmation'],'status': new_job['status']
})

return jsonify({'verify new job': output})

注意：對於該應用而言，日期結構必須為以下YYYY-MM-DD

Answer 1

盡管字符串匹配也應該起作用，但是最好將日期存儲在mongo中作為日期對象。 您可以通過使用strptime來實現。 對於格式YYYY-MM-DD，它應該在POST中計算出類似以下內容：

from datetime.datetime import strptime

jobdate = strptime(request.json['jobdate'], "%Y-%m-%d").date()