when i change the customerId select, the departmentId select and the
contactorName Select will also change,but the following code can't do
that.can anybody points out the problem?
The code is belowing:
-------------------------------------------------------------------------------------
<script type="text/javascript">
var xmlHttp;
function createXMLHttpRequest() {
if (window.ActiveXObject) {
xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
}
else if (window.XMLHttpRequest) {
xmlHttp = new XMLHttpRequest();
}
}
function refreshDeptAndContacList() {
var companyId = document.getElementById
("companyId").value;
if(companyId == "") {
clearDepartmentsList();
return;
}
var url = "getDeptsOfCustomer?companyId="+ companyId;
createXMLHttpRequest();
xmlHttp.onreadystatechange = handleStateChange;
xmlHttp.open("GET", url, true);
xmlHttp.send(null);
}
function handleStateChange() {
if(xmlHttp.readyState == 4) {
if(xmlHttp.status == 200) {
updateDepartmentsList();
}
}
}
function updateDepartmentsList() {alert
(xmlHttp.responseXML.getElementsByTagName("department"));
clearDepartmentsList();
var departments = document.getElementById("departmentId");
var resultsOfDept =
xmlHttp.responseXML.getElementsByTagName("department");
var optionOfDept = null;
for(var i = 0; i < resultsOfDept.length; i++) {
optionOfDept = document.createElement("option");
optionOfDept.appendChild(document.createTextNode
(resultsOfDept[i].firstChild.nodeValue));
departments.appendChild(optionOfDept);
}
var contactorNames = document.getElementById
("contactorName");
var resultsOfContac =
xmlHttp.responseXML.getElementsByTagName("contactorName");
var optionOfContac = null;
for(var i = 0; i < resultsOfContac.length; i++) {
optionOfContac = document.createElement("option");
optionOfContac.appendChild(document.createTextNode
(resultsOfContac[i].firstChild.nodeValue));
contactorNames.appendChild(optionOfContac);
}
}
function clearDepartmentsList() {
var departments = document.getElementById("departmentId");
while(departments.childNodes.length > 0) {
departments.removeChild(departments.childNodes[0]);
}
var contactorNames = document.getElementById
("contactorName");
while(contactorNames.childNodes.length > 0) {
contactorNames.removeChild(contactorNames.childNodes
[0]);
}
}
</script>
-----------------------------------------------------------------------------------------------------
<SELECT onchange="refreshDeptAndContacList();" size=1 id='companyId'
name='companyId' style="width:100%">
<OPTION value=""> </OPTION>
{% for company in queryCompanyList %}
<OPTION value={{ company.CUSTOMER_ID }}
>{{ company.COMPANY_NAME }}</OPTION>
{% endfor %}
</SELECT>
<SELECT size=1 id='departmentId' name=departmentId style="width:200px"
onchange="">
</SELECT>
<SELECT size=1 id='contactorName' name=contactorName style="width:
100%" onchange="">
</SELECT>
----------------------------------------------------------------------------------------------------------------------------------------------------
class GetDeptsOfCustomer(webapp.RequestHandler):
def get(self):
self.response.headers['ContentType'] = "text ml;charset=UTF-8"
companyId = self.request.get('companyId','1101')
queryDeptList = db.GqlQuery("SELECT * FROM M_CUSTOMERS_DEPT
WHERE CUSTOMER_ID = :1 ORDER BY DEPT_ID", companyId)
results = "<companys>"
for dept in queryDeptList:
results += "<department>"
results += dept.DEPT_NAME
results += "</department>"
results += "<contactorName>"
results += dept.PERSON_IN_CHARGE
results += "</contactorName>"
results += "</companys>"
self.response.headers['ContentType'] = "text/xml"
self.response.out.write(results)
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