Question

我需要获取客户列表WHERE date_add＆gt; $ select_date

有了这个，我可以输出所选日期：

$this->context->smarty->assign('select_date' , Configuration::get('SELECT_DATE'));

所以var：select_date和value：SELECT_DATE（其输入类型=“日期”）

sql = 'SELECT firstname,lastname FROM ps_customers WHERE date_add >= ("2014-07-21")';

通过此查询，它可以完美运行。

如果我使用：

sql = 'SELECT firstname,lastname FROM ps_customers WHERE date_add >= $select_date';

我刚收到错误：PrestaShopDatabaseException - 'where子句'中的未知列'$ select_date'。

所以我似乎无法在sql查询中使用我的变量，那么如何使其正常工作呢？

另外我认为让ARRAY中的所有客户端更好并且在TPL文件中使用条件只打印日期＆gt; = {$ select_date}但是如何编写这样的条件可能更好？

{foreach $custdata as $item}
        <tr >
            <td style="text-align:center;">{$item.firstname}</td>
            <td style="text-align:center;">{$item.lastname} </td>

            <td style="text-align:center;">{$item.date_add} </td>
        </tr>

Answer 1

在php中，如果你有一个单引号的字符串，那么你就不能直接在其中使用一个变量，如：

sql = 'SELECT firstname,lastname FROM ps_customers WHERE date_add >= $select_date';

有两种方法可以在字符串中使用变量，如下所示：

1）如果单引号：

，则将变量连接到字符串

sql = 'SELECT firstname,lastname FROM ps_customers WHERE date_add >= '.$select_date;

2）使用双引号：

sql = "SELECT firstname,lastname FROM ps_customers WHERE date_add >= $select_date";

对于双引号，您可以连接变量，它会没问题。

Answer 2

首先尝试制作转义字符串：

<?xml version='1.0' encoding='utf-8'?>
<widget id="com.phonegap.helloworld" version="1.0.0" xmlns="http://www.w3.org/ns/widgets" xmlns:gap="http://phonegap.com/ns/1.0">
    <name>test</name>
    <description>Hello World sample application that responds to the deviceready event.</description>
    <author email="support@phonegap.com" href="http://phonegap.com">PhoneGap Team</author>
    <content src="index.html" />
    <preference name="permissions" value="none" />
    <preference name="orientation" value="default" />
    <preference name="target-device" value="universal" />
    <preference name="fullscreen" value="true" />
    <preference name="webviewbounce" value="true" />
    <preference name="prerendered-icon" value="true" />
    <preference name="stay-in-webview" value="false" />
    <preference name="ios-statusbarstyle" value="black-opaque" />
    <preference name="detect-data-types" value="true" />
    <preference name="exit-on-suspend" value="false" />
    <preference name="show-splash-screen-spinner" value="true" />
    <preference name="auto-hide-splash-screen" value="true" />
    <preference name="disable-cursor" value="false" />
    <preference name="android-minSdkVersion" value="14" />
    <preference name="android-installLocation" value="auto" />
    <gap:plugin name="org.apache.cordova.battery-status" />
    <gap:plugin name="org.apache.cordova.camera" />
    <gap:plugin name="org.apache.cordova.media-capture" />
    <gap:plugin name="org.apache.cordova.console" />
    <gap:plugin name="org.apache.cordova.contacts" />
    <gap:plugin name="org.apache.cordova.device" />
    <gap:plugin name="org.apache.cordova.device-motion" />
    <gap:plugin name="org.apache.cordova.device-orientation" />
    <gap:plugin name="org.apache.cordova.dialogs" />
    <gap:plugin name="org.apache.cordova.file" />
    <gap:plugin name="org.apache.cordova.file-transfer" />
    <gap:plugin name="org.apache.cordova.geolocation" />
    <gap:plugin name="org.apache.cordova.globalization" />
    <gap:plugin name="org.apache.cordova.inappbrowser" />
    <gap:plugin name="org.apache.cordova.media" />
    <gap:plugin name="org.apache.cordova.network-information" />
    <gap:plugin name="org.apache.cordova.splashscreen" />
    <gap:plugin name="org.apache.cordova.vibration" />
    <icon src="icon.png" />
    <icon gap:platform="android" gap:qualifier="ldpi" src="www/res/icon/android/icon-36-ldpi.png" />
    <icon gap:platform="android" gap:qualifier="mdpi" src="www/res/icon/android/icon-48-mdpi.png" />
    <icon gap:platform="android" gap:qualifier="hdpi" src="www/res/icon/android/icon-72-hdpi.png" />
    <icon gap:platform="android" gap:qualifier="xhdpi" src="www/res/icon/android/icon-96-xhdpi.png" />
    <icon gap:platform="blackberry" src="www/res/icon/blackberry/icon-80.png" />
    <icon gap:platform="blackberry" gap:state="hover" src="www/res/icon/blackberry/icon-80.png" />
    <icon gap:platform="ios" height="57" src="www/res/icon/ios/icon-57.png" width="57" />
    <icon gap:platform="ios" height="72" src="www/res/icon/ios/icon-72.png" width="72" />
    <icon gap:platform="ios" height="114" src="www/res/icon/ios/icon-57-2x.png" width="114" />
    <icon gap:platform="ios" height="144" src="www/res/icon/ios/icon-72-2x.png" width="144" />
    <icon gap:platform="webos" src="www/res/icon/webos/icon-64.png" />
    <icon gap:platform="winphone" src="www/res/icon/windows-phone/icon-48.png" />
    <icon gap:platform="winphone" gap:role="background" src="www/res/icon/windows-phone/icon-173-tile.png" />
    <gap:splash gap:platform="android" gap:qualifier="port-ldpi" src="www/res/screen/android/screen-ldpi-portrait.png" />
    <gap:splash gap:platform="android" gap:qualifier="port-mdpi" src="www/res/screen/android/screen-mdpi-portrait.png" />
    <gap:splash gap:platform="android" gap:qualifier="port-hdpi" src="www/res/screen/android/screen-hdpi-portrait.png" />
    <gap:splash gap:platform="android" gap:qualifier="port-xhdpi" src="www/res/screen/android/screen-xhdpi-portrait.png" />
    <gap:splash gap:platform="blackberry" src="www/res/screen/blackberry/screen-225.png" />
    <gap:splash gap:platform="ios" height="480" src="www/res/screen/ios/screen-iphone-portrait.png" width="320" />
    <gap:splash gap:platform="ios" height="960" src="www/res/screen/ios/screen-iphone-portrait-2x.png" width="640" />
    <gap:splash gap:platform="ios" height="1136" src="www/res/screen/ios/screen-iphone-portrait-568h-2x.png" width="640" />
    <gap:splash gap:platform="ios" height="1024" src="www/res/screen/ios/screen-ipad-portrait.png" width="768" />
    <gap:splash gap:platform="ios" height="768" src="www/res/screen/ios/screen-ipad-landscape.png" width="1024" />
    <gap:splash gap:platform="winphone" src="www/res/screen/windows-phone/screen-portrait.jpg" />
    <access origin="*" />
    <plugin name="cordova-plugin-whitelist" version="1" />
    <allow-intent href="http://*/*" />
    <allow-intent href="https://*/*" />
    <allow-intent href="tel:*" />
    <allow-intent href="sms:*" />
    <allow-intent href="mailto:*" />
    <allow-intent href="geo:*" />
    <platform name="android">
        <allow-intent href="market:*" />
    </platform>
    <platform name="ios">
        <allow-intent href="itms:*" />
        <allow-intent href="itms-apps:*" />
    </platform>
    <engine name="ios" spec="~3.9.2" />
</widget>

然后在SQL中使用$ select_date变量

prestashop var in sql query

2 个答案: