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  1. #1
    Sencha User
    Join Date
    Nov 2012
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    Default Unanswered: Extjs3 to Ext4 migration

    We are migrating MVC application from Extjs3 to Extjs4
    Below are the steps we followed.
    1) Added
    Ext JS 3 Compatibility Layer
    2)Added ext3-compat.js and ext3-core.compat.js files reference
    3) Added Extjs4 reference
    4) Removed the Extjs3 reference

    5)Changed Ext3 grid(with paging toolbar) to Ext4
    This results in the below output:

    An Empty screen --The UI cannot be seen.
    Exceptions thrown are :

    1."Ext is not defined" in ext3-compat.js at
    if (Ext.toolbar && Ext.toolbar.Toolbar)

    2."Ext is not defined" in ext3-core-compat.js at
    Ext.Compat = function() in ext3-core-compat.js

    Could you please help to resolve this


  2. #2
    Sencha - Sr Software Engineer mitchellsimoens's Avatar
    Join Date
    Mar 2007
    Gainesville, FL
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    Sounds like the frameworks aren't loaded properly
    Mitchell Simoens @LikelyMitch
    Sencha Inc, Senior Software Engineer
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