lodash filter, wenn beide Werte im Objekt erscheinen

Question

Wie wird gefiltert, wenn sowohl Code als auch datetime nur erscheinen sollen. Der untenstehende Fallcode ist falsch, da er auch datetime ohne den Code anzeigt.

Schließlich, wie kann ich die Ausgabe in PHP-Variable umwandeln, so dass ich es auf dem mysql einfügen

<script src="https://cdn.jsdelivr.net/lodash/4.10.0/lodash.min.js"></script> 
<script> 
    var data = <?php echo json_encode($data); ?>; 
    var users =_.map(data, function(obj) { 
       return _.pick(obj, 'code','datetime'); 
      }); 

_.forEach(users, function(value, key) { 
    console.log(value); 
}); 
</script> 

Beispielausgabe unten.

Object {datetime: "2016-04-11T08:49:24Z"} 
    u.php:10 Object {datetime: "2016-04-11T08:48:13Z"} 
    u.php:10 Object {datetime: "2016-04-11T08:47:44Z"} 
    u.php:10 Object {code: "7592584881", datetime: "2016-04-11T08:46:55Z"} 
    u.php:10 Object {datetime: "2016-04-11T08:45:21Z"} 
    u.php:10 Object {datetime: "2016-04-11T08:44:28Z"} 
    u.php:10 Object {datetime: "2016-04-11T08:39:14Z"} 
    u.php:10 Object {datetime: "2016-04-11T08:44:27Z"} 
    u.php:10 Object {datetime: "2016-04-11T08:38:41Z"} 
    u.php:10 Object {datetime: "2016-04-11T08:36:51Z"} 
    u.php:10 Object {code: "7830179866", datetime: "2016-04-11T08:42:23Z"} 
    u.php:10 Object {datetime: "2016-04-11T08:42:02Z"} 
    u.php:10 Object {datetime: "2016-04-11T08:41:49Z"} 
    u.php:10 Object {datetime: "2016-04-11T08:33:54Z"} 

Dies ist die JSON-Array für $ data

[ 
    { 
     "_id": "570e4f4ee4b0325dbf42c6c8", 
     "ap_from": "44:d9:e7:7a:63:81", 
     "ap_to": "44:d9:e7:7a:60:62", 
     "channel": "1", 
     "channel_from": "1", 
     "channel_to": "1", 
     "datetime": "2016-04-13T13:52:49Z", 
     "guest": "e8:50:8b:a7:84:60", 
     "key": "EVT_WG_Roam", 
     "msg": "Guest[e8:50:8b:a7:84:60] roams from AP[44:d9:e7:7a:63:81] to AP[44:d9:e7:7a:60:62] from \"channel 1(ng)\" to \"channel 1(ng)\" on \"EandCCopraWireless\"", 
     "radio": "ng", 
     "radio_from": "ng", 
     "radio_to": "ng", 
     "site_id": "565eedd4e4b077dd32e114d0", 
     "ssid": "EandCCopraWireless", 
     "subsystem": "wlan", 
     "time": 1460555569274 
    }, 
    { 
     "_id": "570e4e89e4b0325dbf42c6c0", 
     "ap": "44:d9:e7:7a:63:81", 
     "channel": "1", 
     "datetime": "2016-04-13T13:49:37Z", 
     "guest": "00:73:8d:8d:e7:58", 
     "key": "EVT_WG_Connected", 
     "msg": "Guest[00:73:8d:8d:e7:58] has connected to AP[44:d9:e7:7a:63:81] with ssid \"EandCCopraWireless\" on \"channel 1(ng)\"", 
     "radio": "ng", 
     "site_id": "565eedd4e4b077dd32e114d0", 
     "ssid": "EandCCopraWireless", 
     "subsystem": "wlan", 
     "time": 1460555377077 
    }, 
{ 
     "_id": "570e3eebe4b0325dbf42c603", 
     "code": "8516695243", 
     "datetime": "2016-04-13T12:43:23Z", 
     "guest": "82:81:95:74:77:90", 
     "key": "EVT_HS_VoucherUsed", 
     "msg": "Voucher[8516695243] was used by Guest[82:81:95:74:77:90]", 
     "site_id": "565eedd4e4b077dd32e114d0", 
     "subsystem": "wlan", 
     "time": 1460551403094 
    }, 
..... 
..... 
..... 

Answer 1

Sie aus dem data Array die unerwünschten Elemente herauszufiltern, sollte es zu _.map(), bevor er:

var users = _.map(
    _.filter(data, function (obj) { 
     return _.has(obj, 'code') && _.has(obj, 'datetime'); 
    }), 
    function (obj) { 
     return _.pick(obj, ['code', 'datetime']); 
    } 
);