小编mar*_*ful的帖子

为什么在下面的例子中字母é算作词边界匹配\b？

图案： /\b(cum)\b/i

文本： écumé

匹配不需要的 'cum'。

有没有可能克服这个？

我正在使用express、fetch 和firefox。这是代码

async updateTutorial() {
const requestOptions = {
        method: "POST",
        headers: { "Content-Type": "application/json" },
        body: JSON.stringify(this.currentTutorial)
    };

  await fetch("https://localhost:9000/tutorial/update" , requestOptions);


}

在 Firefox 中，我看到此错误： TypeError: NetworkError 当尝试获取资源时我不知道这是什么类型的问题。

我在我的数据库(mysql)中有数据,我试图以json格式拉到页面,所以我可以选择数据以供将来参考.

当前数据输出

{
    "quotes": [
        {
            "season": "3",
            "episode": "2",
            "lines": [
                "Boys:\tSchool day, school day, teacher's golden ru\nKyle:\tAh, damn it! My little brother's trying to follow me to school, again. "
            ]
        },
        {
            "season": "1",
            "episode": "2",
            "lines": [
                "Episode 2 "
            ]
        }
    ]
}

我正在努力的部分就是lines这样展示

"lines": [
           {"Boys": "School day, school day, teacher's golden ru"},
           {"Kyle": "Ah, damn it! My little brother's trying to follow me to school, again."}
         ]

我有PHP

$result = $con->query("SELECT …

这是我尝试但无法获得理想结果的内容.情况1:

^(00[1-9]|0[1-9][0-9]|1[0-5][0-9])$

我接受范围从001-159,因为我给[0-9]

对于案例2:

^(00[1-9]|0[1-9][0-9]|1[0-50][0])$

它接受110,120 ......和150,因为最后接受的数字是"0".

所需的结果应该只接受001-150我们将非常感谢您的帮助.

将表单保存到数据库时,我收到以下错误消息:未知密钥::依赖

我不知道为什么

有问题的模型我试图将数据保存到称为博物馆.这个模型被称为另一个名为展览的模型.

以下是两种型号:

class Museum < ActiveRecord::Base
  has_many :exhibitions, dependant: :destroy
end

和展览模型

class Exhibition < ActiveRecord::Base
  belongs_to :museum
end

我的博物馆控制员

class MuseumsController < ApplicationController

def show
  @museum = Museum.find(params[:id])
  @museum.address = @museum.streetnumber + " " +    @museum.streetnumbercomplement + " " + @museum.street + " " + @museum.adresscomplement + "," + @museum.postalcode + " " + @museum.city + " " + @museum.citycomplement
end

def new
end

def create
  @museum = Museum.new(museum_params)
  @museum.save
  redirect_to @museum
end

private

def museum_params
  params.require(:museum). …

所以我有这个json:

{
  "success": true,
  "rgInventory": {
    "4580331488": {
      "id": "4580331488",
      "classid": "520025252",
      "instanceid": "0",
      "amount": "1",
      "pos": 1
    },
    "4566197481": {
      "id": "4566197481",
      "classid": "1439482117",
      "instanceid": "188530139",
      "amount": "1",
      "pos": 2
    },
    "4566196610": {
      "id": "4566196610",
      "classid": "1439484944",
      "instanceid": "188530139",
      "amount": "1",
      "pos": 3
    },
    "4566097797": {
      "id": "4566097797",
      "classid": "310776859",
      "instanceid": "302028390",
      "amount": "1",
      "    pos": 4
    },
    "4565915026": {
      "id": "4565915026",
      "classid": "310776840",
      "instanceid": "302028390",
      "amount": "1",
      "    pos": 5
    },
    "4565415060": {
      "id": "4565415060",
      "classid": "1439489161",
      "instanceid": …