[英]Dynamics CRM: JavaScript GET request is not retrieving records using Web.Api
I have written following JS function on Incident form to retrieve Contract Lines, but function is not doing anything. 我在事件表单上编写了以下JS函数来检索合同行,但是该函数没有执行任何操作。 I have verified the Fetch Query and it returns results.
我已经验证了提取查询并返回结果。 So data is definitely there.
因此,数据肯定存在。 I have debugged it and looks like "this.readyState == 4" is false.
我已经调试了它,看起来“ this.readyState == 4”是错误的。
Can anyone please suggest me what is wrong with my code. 任何人都可以建议我我的代码有什么问题。 Do I need to add any assemblies?
我需要添加任何程序集吗?
Thanks 谢谢
function Test() {
var customerId = Xrm.Page.getAttribute("parentcustomer").getValue();
if (customerId == null) {
return;
}
var fetchXml = "<fetch version='1.0' output-format='xml-platform' mapping='logical' distinct='true'>" +
"<entity name='contractdetail'>" +
"<attribute name='contractid' />" +
"<attribute name='contractdetailid' />" +
"<filter type='and'>" +
"<condition attribute='statuscode' operator='in'>" +
"<value>2</value>" +
"<value>1</value>" +
"</condition>" +
"<condition attribute='customerid' operator='eq' value='" +
customerId[0].id +
"' />" +
"</filter>" +
"</entity>" +
"</fetch>";
var uri = "/contractdetail?fetchXml=" + encodeURIComponent(fetchXml);
var clientUrl = Xrm.Page.context.getClientUrl();
var webAPIPath = "/api/data/v8.1";
uri = clientUrl + webAPIPath + uri;
var request = new XMLHttpRequest();
request.open("GET", encodeURI(uri), false);
request.setRequestHeader("Accept", "application/json");
request.setRequestHeader("Content-Type", "application/json; charset=utf-8");
request.setRequestHeader("OData-MaxVersion", "4.0");
request.setRequestHeader("OData-Version", "4.0");
request.onreadystatechange = function() {
if (this.readyState == 4 /* complete */) {
request.onreadystatechange = null;
switch (this.status) {
case 200: // Success with content returned in response body.
case 204: // Success with no content returned in response body.
var data = JSON.parse(this.response);
if (data && data.value) {
for (var indexContractLine = 0; indexContractLine < data.value.length; indexContractLine++) {
alert(data.value[indexContractLine].contractdetailid);
//alert(data.value[indexContractLine]['@odata.etag']);
}
}
break;
default: // All other statuses are unexpected so are treated like errors.
var error;
try {
error = JSON.parse(request.response).error;
} catch (e) {
error = new Error("Unexpected Error");
}
alert(error);
break;
}
if (this.status == 200) {
var data = JSON.parse(this.response);
if (data && data.value) {
for (var indexContractLine = 0; indexContractLine < data.value.length; indexContractLine++) {
alert(data.value[indexContractLine].contractdetailid);
alert(data.value[indexContractLine]['@odata.etag']);
}
} else {
var error = JSON.parse(this.response).error;
alert(error.message);
}
}
};
request.send();
}
}
Inside onreadystatechange
replace this
with request
里面
onreadystatechange
替换this
与request
Here's a sample bit of code straight out of a production environment (note: this is a POC, it's not meant to be copy-pasted in your code) to show how it should end up looking like: 这是直接来自生产环境的示例代码(请注意:这是一个POC,无意将其复制粘贴到您的代码中),以显示最终的样子:
var xhttp = new XMLHttpRequest();
xhttp.onreadystatechange = function () {
if (xhttp.readyState == 4) {
if (xhttp.status == 200) {
xhttp.onreadystatechange = null; // avoid memory leaks
var data = JSON.parse(xhttp.response);
onsuccess(data);
}
else {
var error = JSON.parse(xhttp.response).error;
onerror(error);
}
}
};
You might want to install Jason Lattimer's CRM RESTBuilder solution to do further testing. 您可能需要安装Jason Lattimer的CRM RESTBuilder解决方案来进行进一步的测试。
https://github.com/jlattimer/CRMRESTBuilder https://github.com/jlattimer/CRMRESTBuilder
It provides a GUI to create Web API queries, which you can then test and modify to your liking. 它提供了一个GUI,用于创建Web API查询,然后您可以根据自己的喜好对其进行测试和修改。
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