Question

当尝试运行rails db：migrate时，出现上述错误。现在我很肯定我正在运行postgres，并在database.yml文件中包含以下代码。

from flask import Flask,jsonify,render_template,request
app = Flask(__name__)

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

tempusage = 0
weightsusage = 0
curencyusage = 0
cost = 0
userip = '1.1.1.1'

@app.route('/tempreature/c2f/<int:temp>', methods=['GET'])
def c2f(temp):
    tempreature = temp
    ftemp = (tempreature * (9/5)) + 32
    tempreatures = [
    {
        'conversionType': u'Tempreature',
        'from': u'Celcius',
        'fromValue':tempreature,
        'to' : u'Faherenheit',
        'tovalue':ftemp
    }]
    global userip
    userip = request.environ['REMOTE_ADDR']
    global tempusage
    if userip == request.environ['REMOTE_ADDR']:
       tempusage  += 1

    return jsonify({'tempreatures':  tempreatures})

@app.route('/tempreature/f2c/<int:temp>', methods=['GET'])
def f2c(temp):
    tempreature = (temp -32)*(5/9)
    ftemp = tempreature/10
    tempreatures = [
    {
        'conversionType': u'Tempreature',
        'from': u'Faherenheit',
        'fromValue':tempreature,
        'to' : u'Celcius',
        'tovalue':ftemp
    }]
    global tempusage
    global userip
    userip = request.environ['REMOTE_ADDR']
    if userip == request.environ['REMOTE_ADDR']:
       tempusage += 1

    return jsonify({'tempreatures':  tempreatures})

@app.route('/weight/k2p/<int:w>', methods=['GET'])
def k2p(w):
    weight = w*2.205
    fweight= w/10
    weights = [
    {
        'conversionType': u'Weight',
        'from': u'kg',
        'fromValue':weight,
        'to' : u'pounds',
        'tovalue':fweight
    }]
    global userip
    userip = request.environ['REMOTE_ADDR']
    global weightsusage
    if userip == request.environ['REMOTE_ADDR']:
      weightsusage += 1

    return jsonify({'weights': weights})

@app.route('/weight/p2k/<int:w>', methods=['GET'])
def p2k(w):
    weight = w/2.205
    fweight= w/10
    weights = [
    {
        'conversionType': u'Weight',
        'from': u'pounds',
        'fromValue':weight,
        'to' : u'kg',
        'tovalue':fweight
    }]
    global userip
    userip = request.environ['REMOTE_ADDR']
    global weightsusage
    if userip == request.environ['REMOTE_ADDR']:
      weightsusage += 1

    return jsonify({'weights': weights})

@app.route('/currency/USD/EUR/<int:value>', methods=['GET'])
def usd2e(value):
    usd = value
    eur = usd *0.88
    cvalues = [
     {
        'conversionType': u'Currency',
        'from': u'USD',
        'fromValue':usd,
        'to' : u'EUR',
        'tovalue':eur
     }]
    global userip
    userip = request.environ['REMOTE_ADDR']
    global curencyusage
    if userip == request.environ['REMOTE_ADDR']:
            curencyusage += 1

    return jsonify({'currency': cvalues})

@app.route('/currency/EUR/USD<int:value>', methods=['GET'])
def e2usd(value):
    eur = value
    usd = eur* 1.14
    cvalues = [
    {
        'conversionType': u'Currency',
        'from': u'EUR',
        'fromValue':eur,
        'to' : u'USD',
        'tovalue':usd
    }]
    global userip
    userip = request.environ['REMOTE_ADDR']
    global curencyusage
    if userip == request.environ['REMOTE_ADDR']:
            curencyusage += 1

    return jsonify({'currency': cvalues})


@app.route('/billing/', methods=['GET'])
def billing():
 global userip
 global cost
 global tempusage
 global weightsusage
 global curencyusage
 totalusage = tempusage + weightsusage + curencyusage
 userip = request.environ['REMOTE_ADDR']
 if userip == request.environ['REMOTE_ADDR']:
    cost = tempusage * 0.05 + weightsusage* 0.10 + curencyusage * 0.15
 return render_template('billing.html', userip = userip, tempusage = tempusage, weightusage = weightsusage, curencyusage= curencyusage, totalusage= totalusage, cost = cost)

@app.route('/useripbill/', methods=['GET'])
def totalbill():
  global userip
  global cost
  global tempusage
  global weightsusage
  global curencyusage
  totalusage = tempusage + weightsusage + curencyusage
  userip = request.environ['REMOTE_ADDR']
  cost = tempusage * 0.05 + weightsusage* 0.10 + curencyusage * 0.15
  bill = [{
        'userip': userip,
        'tempusage': tempusage,
        'weightusage':weightsusage ,
        'currencyusage' :  curencyusage,
        'totalusage' : totalusage,
        'cost':cost 
    }]
  return jsonify({'bill': bill})



----------

我尚未设置密码。任何帮助将不胜感激。

Answer 1

解决方案在注释中。在运行迁移之前，OP没有创建数据库（通过rails db:create。

ActiveRecord :: NoDatabaseError：致命：数据库“ aquastarsbackend_development”不存在

1 个答案: