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Thread: nested data into xtemplate dataview example using extjs 4.0.7 with MVC

  1. #1
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    Default nested data into xtemplate dataview example using extjs 4.0.7 with MVC

    Hi Guys,
    i was finally able to use nested data in xtemplate dataview overriding three functions
    of the abstractview in the version 4.0.7 of extjs taking the implementation
    from the release candidate 4.1 and the implementation of the update indexes
    from a forum in internet because the one on the RC is not perfect.



    Code:
    Ext.Loader.setConfig({enabled: true});
    
    
    Ext.override(Ext.view.AbstractView, {
        prepareData: function(data, index, record) {
           var associatedData, attr;
            if (record) {
                associatedData = record.getAssociatedData();
                for (attr in associatedData) {
                    if (associatedData.hasOwnProperty(attr)) {
                        data[attr] = associatedData[attr];
                    }
                }
            }
            return data;
        }
    });
    
    
    Ext.override(Ext.view.AbstractView, {
        collectData : function(records, startIndex){
            var data = [],
                i = 0,
                len = records.length,
                record;
    
            for (; i < len; i++) {
                record = records[i];
                data[i] = this.prepareData(record.data, startIndex + i, record);
            }
            return data;
        },
    
        // private
        bufferRender : function(records, index){
            var me = this,
                div = me.renderBuffer || (me.renderBuffer = document.createElement('div'));
    
            me.tpl.overwrite(div, me.collectData(records, index));
            
            return Ext.query(me.getItemSelector(), div);
        }
    });
    
    
    Ext.override(Ext.view.AbstractView, {
       // private
         updateIndexes : function(startIndex, endIndex) {
            var ns = this.all.elements,
                records = this.store.getRange();
            startIndex = startIndex || 0;
            endIndex = endIndex || ((endIndex === 0) ? 0 : (ns.length - 1));
            for(var i = startIndex; i <= endIndex; i++){
                ns[i].viewIndex = i;
                ns[i].viewRecordId = ((records.length > i) && records[i]) ? records[i].internalId : undefined;
                if (!ns[i].boundView) {
                    ns[i].boundView = this.id;
                }
            }
        }
    });
    Last edited by mitchellsimoens; 21 Mar 2012 at 6:41 AM. Reason: added [CODE] tags

  2. #2
    Sencha - Sr Software Engineer mitchellsimoens's Avatar
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    Why didn't you use one Ext.override instead of 3?
    Mitchell Simoens @LikelyMitch
    Sencha Inc, Senior Software Engineer
    ________________
    Learn BBCode and use it! Checkout the CODE tag!

    Check out my GitHub, lots of nice things for Ext JS and Sencha Touch
    https://github.com/mitchellsimoens

  3. #3
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    I am not fond with javascript
    i am making my first moves with extjs that's why
    i used 3 overrides......

  4. #4
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    Thanks for the code. This is exactly what I was just looking for. Unfortunately the dataview does not update correctly after manipulating the store (deleting, updating records, ...).

    Do you have any idea how this could be solved?

    Maybe you can have a look at this thread I just started where i describe the problem a little more in detail.

    Thanks & best regards,

    Mike

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