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Thread: Ext 3 to 4 Migration

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  1. #301
    Ext JS Premium Member
    Join Date
    May 2009
    Posts
    23

    Default been there done that

    IIRC, there is a compatibility layer JS that directs you how to rewrite components as needed. it was painful since our app was a huge one-page (portal with many kinds of widgets, some with maps), but it worked pretty well. i'm afraid it is all or nothing but also forgiving if that makes sense. in other words, some things the layer will let you get away with so that other components can be dealt with.

    we did see a performance boost as well as improved look and feel.

  2. #302

    Default Upgrading

    Hi,

    I know its late. I am currently using ext 3.1 and I wanted to upgrade to ext js 5. Should I first upgrade to 4 and then 5?

    Any help to guide me on this is much appreciated.

  3. #303
    Sencha Premium User SebTardif's Avatar
    Join Date
    Feb 2011
    Location
    Cambridge, MA
    Posts
    1,296

    Default

    I did a lot of migrations and I think you would be better from 3.1 to 5.x latest.You could enable the 5.x migration mode, that will help just a little.You will have to rewrite lot of code maybe can use some editor replace, with regex.Often you app will start with a blank page without any warning/error!So you will have to start with having viewport load, then 1+ component, and repeat.See https://www.sencha.com/forum/showthr...436#post798436

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