Question

我想从Leaflet弹出窗口更新PostgreSQL中单元格的值。我想要做的是在按下表单中的提交按钮时运行javascript函数，然后通过在javascript函数中调用的PHP脚本将已输入的值发送到表单到PostgreSQL数据库。

这是我的弹出功能与其表单相似的内容。

function onEachFeature(feature, layer) {
    insertsearch = feature.properties.gid

    popUpText = "<b>Name</b>:    " + feature.properties.businessna + 
    "<br> <b>Address: </b>" + feature.properties.addresslin + ",  " + feature.properties.addressl_1 +
    "<br><b>Food hygiene rating</b> <span id=skala>(1-5)</span> : " + feature.properties.ratingvalu +
    "<form id='formoid' action='javascript:insertdata();'><br>Rating (between 1 and 5): <input type='number' name='quantity' min='1' max='5'><input type='submit'></form>"
    feature.properties.gid;

    feature.properties.popupContent = popUpText;
    if (feature.properties && feature.properties.popupContent) {
    layer.bindPopup(feature.properties.popupContent);
    }
};

这是我想要使用的PHP脚本：（ insert.php ）

<?php
header("Access-Control-Allow-Origin: *");
$conn_str = "host=localhost dbname=geoweb 
   user=user password=user";
$dbconn = pg_connect($conn_str) 
  or die('Could not connect: ' . pg_last_error());


//innumber is supposed to be the rating value given by the user in the HTML   form 
$innumber=;

//idnumber is supposed to be the GID of the point that is being rated
//GID is this variable in the HTML function (insertsearch =  feature.properties.gid)
$idnumber=;

//norate is the NUMBER OF TIMES the place has been rated
$norate= pg_query($dbconn, "SELECT rate FROM rating WHERE gid=$idnumber");

//findnumber is getting THE RATING value that the place already has
$findnumber= pg_query($dbconn, "SELECT rateav FROM rating WHERE gid=$idnumber");

//newvalue adds the existing rating value to the users new rating
$newvalue= $innumber + $findnumber;

//adds on 1 (one) to the norate to update how many times the place has been rated
$newcount= $norate+1;

//the query is updating the new rating value of the place. 
//It replaces the old rating value with the a new value
$query="UPDATE rating SET rateav=$newvalue, rate=$newcount  WHERE gid=$idnumber";
$result = pg_query($dbconn, $query);

pg_freeresult($result);  
pg_close($dbconn);

?>

我的问题是现在弄清楚如何编写javascript函数。据我所知，我应该使用jquery $ post方法通过 insert.php 脚本发送数据。不管怎样，我应该在HTML表单中将参数发送到JS函数（action = ...）？如果是这样，我该怎么做？我试图通过PHP脚本发送两个值，即弹出函数中的 insertsearch 变量（以获取表中的正确条目），以及用户在表单中给出的评级编号。

感谢您的帮助！

Answer 1

我使用.ajax data选项填充了执行此POST所需的任何参数。确保同时指定URL，dataType和方法以及数据。

从Leaflet弹出窗口更新PostgreSQL中的值

1 个答案: