AngularJS SQL
The code from the previous chapter can also be used to read from databases.
Fetching Data From a PHP Server Running MySQL
AngularJS Example
<div ng-app="myApp" ng-controller="customersCtrl">
<table>
<tr
ng-repeat="x in names">
<td>{{ x.Name }}</td>
<td>{{ x.Country
}}</td>
</tr>
</table>
</div>
<script>
var app = angular.module('myApp', []);
app.controller('customersCtrl',
function($scope, $http) {
$http.get("http://www.w3schools.com/angular/customers_mysql.php")
.then(function (response) {$scope.names = response.data.records;});
});
</script>
Try it Yourself »
Fetching Data From an ASP.NET Server Running SQL
AngularJS Example
<div ng-app="myApp" ng-controller="customersCtrl">
<table>
<tr
ng-repeat="x in names">
<td>{{ x.Name }}</td>
<td>{{ x.Country
}}</td>
</tr>
</table>
</div>
<script>
var app = angular.module('myApp', []);
app.controller('customersCtrl',
function($scope, $http) {
$http.get("http://www.w3schools.com/angular/customers_sql.aspx")
.then(function (response) {$scope.names = response.data.records;});
});
</script>
Try it Yourself »
Server Code Examples
The following section is a listing of the server code used to fetch SQL data.
- Using PHP and MySQL. Returning JSON.
- Using PHP and MS Access. Returning JSON.
- Using ASP.NET, VB, and MS Access. Returning JSON.
- Using ASP.NET, Razor, and SQL Lite. Returning JSON.
Cross-Site HTTP Requests
Requests for data from a different server (than the requesting page), are called cross-site HTTP requests.
Cross-site requests are common on the web. Many pages load CSS, images, and scripts from different servers.
In modern browsers, cross-site HTTP requests from scripts are restricted to same site for security reasons.
The following line, in our PHP examples, has been added to allow cross-site access.
header("Access-Control-Allow-Origin: *");
1. Server Code PHP and MySQL
<?php
header("Access-Control-Allow-Origin: *");
header("Content-Type:
application/json; charset=UTF-8");
$conn =
new mysqli("myServer", "myUser", "myPassword", "Northwind");
$result = $conn->query("SELECT
CompanyName, City, Country FROM Customers");
$outp = "";
while($rs = $result->fetch_array(MYSQLI_ASSOC)) {
if ($outp != "") {$outp .= ",";}
$outp .= '{"Name":"' . $rs["CompanyName"] . '",';
$outp .= '"City":"' . $rs["City"] . '",';
$outp .= '"Country":"'. $rs["Country"] . '"}';
}
$outp ='{"records":['.$outp.']}';
$conn->close();
echo($outp);
?>
2. Server Code PHP and MS Access
<?php
header("Access-Control-Allow-Origin: *");
header("Content-Type:
application/json; charset=ISO-8859-1");
$conn = new COM("ADODB.Connection");
$conn->open("PROVIDER=Microsoft.Jet.OLEDB.4.0;Data Source=Northwind.mdb");
$rs = $conn->execute("SELECT CompanyName, City, Country FROM
Customers");
$outp = "";
while (!$rs->EOF) {
if ($outp != "") {$outp .= ",";}
$outp .= '{"Name":"' . $rs["CompanyName"] . '",';
$outp .= '"City":"' . $rs["City"] . '",';
$outp .= '"Country":"'. $rs["Country"] . '"}';
$rs->MoveNext();
}
$outp ='{"records":['.$outp.']}';
$conn->close();
echo ($outp);
?>
3. Server Code ASP.NET, VB and MS Access
<%@ Import Namespace="System.IO"%>
<%@ Import Namespace="System.Data"%>
<%@ Import Namespace="System.Data.OleDb"%>
<%
Response.AppendHeader("Access-Control-Allow-Origin", "*")
Response.AppendHeader("Content-type", "application/json")
Dim conn As
OleDbConnection
Dim objAdapter As OleDbDataAdapter
Dim objTable As
DataTable
Dim objRow As DataRow
Dim objDataSet As New DataSet()
Dim outp
Dim c
conn = New OledbConnection("Provider=Microsoft.Jet.OLEDB.4.0;data
source=Northwind.mdb")
objAdapter = New OledbDataAdapter("SELECT
CompanyName, City, Country FROM Customers", conn)
objAdapter.Fill(objDataSet,
"myTable")
objTable=objDataSet.Tables("myTable")
outp = ""
c = chr(34)
for each x in objTable.Rows
if outp <> "" then outp = outp & ","
outp = outp & "{" & c & "Name" & c & ":" & c & x("CompanyName")
& c & ","
outp = outp & c & "City" & c & ":" & c
& x("City") & c & ","
outp = outp & c & "Country" & c
& ":" & c & x("Country") & c & "}"
next
outp
="{" & c & "records" & c & ":[" & outp & "]}"
response.write(outp)
conn.close
%>
4. Server Code ASP.NET, Razor C# and SQL Lite
@{
Response.AppendHeader("Access-Control-Allow-Origin", "*")
Response.AppendHeader("Content-type", "application/json")
var db =
Database.Open("Northwind");
var query = db.Query("SELECT CompanyName,
City, Country FROM Customers");
var outp =""
var c = chr(34)
}
@foreach(var row in
query)
{
if outp <> "" then outp = outp + ","
outp = outp + "{" + c + "Name" + c + ":" + c
+ @row.CompanyName + c + ","
outp = outp + c
+ "City" + c + ":" + c
+ @row.City + c + ","
outp = outp
+ c + "Country" + c
+ ":" + c + @row.Country + c + "}"
}
outp ="{" + c
+ "records" + c + ":[" + outp + "]}"
@outp
