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Thread: Shouldn't production build generate cache busters for scripts and resources automatc?

  1. #1
    Sencha Premium Member krause's Avatar
    Join Date
    Jun 2008

    Exclamation Shouldn't production build generate cache busters for scripts and resources automatc?

    I'm trying to package an app for production, but I have noticed that there are problems each time I roll out a new version, since the browser is (rightfully) caching app.js and MyApp-all.css.
    Shouldn't production profile generate cache busters for scripts and resources?
    Is there a simple solution that doesn't require hacking around (see workaround section)?

    Development Environment:
    Sencha Cmd v5.1.3.61
    ExtJS 4.2 (should be irrelevant)
    Ubuntu 14.04

    How to reproduce:
    sencha generate app -ext MyApp ./MyApp
    sencha app build -c production

    build/production/MyApp/index.html contains:

    <link rel="stylesheet" href="resources/MyApp-all.css"/>
    <script type="text/javascript" src="app.js"></script>
    Expected result:
    build/production/MyApp/index.html sould contain:

    <link rel="stylesheet" href="resources/MyApp-all.css?_dc=1234"/>
    <script type="text/javascript" src="app.js?_dc=1234"></script>
    add to build.xml:

    <target name="-after-build">
        <replace file="${app.output.base}/index.html" token="${app.output.js}" value="${app.output.js}?v=${build.timestamp}" />
    Related posts:
    Last edited by krause; 2 Oct 2015 at 9:40 AM. Reason: Changed title from "production profile" to "production build"

  2. #2
    Sencha - Sustaining Engineer tristan.lee's Avatar
    Join Date
    Mar 2015
    Central Ohio


    This is something that was given more control in later versions of the framework, but what you have done with the -after-build target is the recommended way to automate this.

    I don't really have an answer as to why it doesn't automatically do it other than maybe it was not preferred since it wasn't as easily controller like in later versions.
    Tristan Lee
    Sencha Inc - Sustaining Engineer

    Having an issue? Help us help you - be detailed; provide some code; demonstrate with a fiddle (

    Embed your fiddle in your post: [FIDDLE]id[/FIDDLE]

  3. #3
    Sencha Premium User wemerson.januario's Avatar
    Join Date
    Nov 2008
    Goiânia - GO, Brazil


    Thanks for sharing works for Ext JS 4.2 apps
    Wemerson Januario @JanuarioCoder
    Novanti Tecnologia, Sencha MVP/ Ext JS Consultant
    Hire me on UpWork:


    Treinamento e Consultoria Ext JS. QUALIFIQUE-SE JÁ!

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