Announcement

**Isomorphic** · 28 Dec 2016, 11:42

If this is a RestDataSource, your response lacks the jsonPrefix and Suffix - see docs for these properties, which also explains why you really really want them.

We will, however, clarify this error message.

**thecloudgate** · 30 Dec 2016, 03:59

Hi,

Thanks for your quick response.

I have added to RestDataSource this two lines without success (creating RestDataSource returns result).. In documentation it states to leave empty to switch off: "You can switch off JSON wrapping altogether by setting both this and jsonSuffix to empty strings."

result.setJsonPrefix("");
result.setJsonSuffix("");

In our implementation we used external CDN, smartclient libraries ("sc" directory) are in other server.

I attached you a code based in your sample RestDataSource JSON (https://isomorphic.atlassian.net/wik...?pageId=524942), where it works with smartclient libraries in same server /RestDataSourceWithJson.html, but it not works with smartclient libreries in external server, (/RestDataSourceWithJsonCDN.html), which is the case, problem we have in our project.

What is the solution? Discard external CDN?

We have compiles attached code with Smart GWT 6p 2016-12-25.

RestDataSourceWithJsonCDN.html (not allowed to upload):

[HTML]<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<title>Web Application Starter Project</title>

<script> var isomorphicDir = "https://externalhost/smartgwt6p/sc/"; </script>
<script src="https://externalhost/smartgwt6p/sc/modules/ISC_Core.js"> </script>
<script src="hhttps://externalhost/smartgwt6p/sc/modules/ISC_Foundation.js"> </script>
<script src="hhttps://externalhost/smartgwt6p/sc/modules/ISC_Containers.js"> </script>
<script src="https://externalhost/smartgwt6p/sc/modules/ISC_Grids.js"> </script>
<script src="https://externalhost/smartgwt6p/sc/modules/ISC_Forms.js"> </script>
<script src="https://externalhost/smartgwt6p/sc/modules/ISC_DataBinding.js"> </script>

<script src="https://externalhost/smartgwt6p/sc/skins/Enterprise/load_skin.js"> </script>

<script type="text/javascript" language="javascript" src="restdatasourcewithjsonCDN/restdatasourcewithjsonCDN.nocache.js"></script>

</head>
<body>
<iframe src="javascript:''" id="__gwt_historyFrame" tabIndex='-1'
style="position: absolute; width: 0; height: 0; border: 0"></iframe>
<noscript>
<div
style="width: 22em; position: absolute; left: 50%; margin-left: -11em; color: red; background-color: white; border: 1px solid red; padding: 4px; font-family: sans-serif">
Your web browser must have JavaScript enabled in order for this
application to display correctly.</div>
</noscript>
</body>
</html>[/HTML]

RestDataSourceWithJson.html

[HTML]<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<title>Web Application Starter Project</title>

<script> var isomorphicDir = "restdatasourcewithjson/sc/"; </script>
<script src="restdatasourcewithjson/sc/modules/ISC_Core.js"> </script>
<script src="restdatasourcewithjson/sc/modules/ISC_Foundation.js"> </script>
<script src="restdatasourcewithjson/sc/modules/ISC_Containers.js"> </script>
<script src="restdatasourcewithjson/sc/modules/ISC_Grids.js"> </script>
<script src="restdatasourcewithjson/sc/modules/ISC_Forms.js"> </script>
<script src="restdatasourcewithjson/sc/modules/ISC_RichTextEditor.js"></script>
<script src="restdatasourcewithjson/sc/modules/ISC_Calendar.js"> </script>
<script src="restdatasourcewithjson/sc/modules/ISC_DataBinding.js"> </script>

<script src="restdatasourcewithjson/sc/skins/Enterprise/load_skin.js"></script>

<script type="text/javascript" language="javascript" src="restdatasourcewithjson/restdatasourcewithjson.nocache.js"></script>

</head>
<body>
<iframe src="javascript:''" id="__gwt_historyFrame" tabIndex='-1'
style="position: absolute; width: 0; height: 0; border: 0"></iframe>
<noscript>
<div
style="width: 22em; position: absolute; left: 50%; margin-left: -11em; color: red; background-color: white; border: 1px solid red; padding: 4px; font-family: sans-serif">
Your web browser must have JavaScript enabled in order for this
application to display correctly.</div>
</noscript>
</body>
</html>[/HTML]

Thanks.

Attached Files

**Isomorphic** · 31 Dec 2016, 08:17

We have tried to reproduce the issue to no avail: when we test in our local environment it is working for us.

We have tested both with the js files being loaded from the local war and with the js files deployed to a different server simulating a CDN server. There was no cross server scripting problems, the test data without prefix and suffix was always correctly loaded once we added the lines: result.setJsonPrefix("");
result.setJsonSuffix("");

In any case, we have noticed that there is a typo in the code that you provided. The initial html provided for CDN test (RestDataSourceWithJsonCDN.html) contains two errors in two of the lines, where instead of "https" we can see an extra tralining "h" => "hhttps":
<script src="hhttps://externalhost/smartgwt6p/sc/modules/ISC_Foundation.js"> </script>
<script src="hhttps://externalhost/smartgwt6p/sc/modules/ISC_Containers.js"> </script>
Could it be the cause of the latest problem reported?

Happy new year,
Isomorphic

**thecloudgate** · 12 Jan 2017, 04:29

Hi,

I'm back fro some days out of office.. You're right the code with

result.setJsonPrefix("");
result.setJsonSuffix("");

works with CDN solution. Not needed for non-CDN solution.

Could you provide a link with more information about JSON Suffix and Prefix boundaries and how to applied it?

Thanks.

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