1. #1
    Sencha - Community Support Team mankz's Avatar
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    Default Access the grid in a column renderer

    Access the grid in a column renderer


    Is there an easy way to access the grid object in a column renderer function? Currently I'm doing an override which I would gladly not do...

    Code:
    Ext.override(Ext.grid.GridView, {
        doRender : function(cs, rs, ds, startRow, colCount, stripe){
            var ts = this.templates, ct = ts.cell, rt = ts.row, last = colCount-1;
            var tstyle = 'width:'+this.getTotalWidth()+';';
                    var buf = [], cb, c, p = {}, rp = {tstyle: tstyle}, r;
            for(var j = 0, len = rs.length; j < len; j++){
                r = rs[j]; cb = [];
                var rowIndex = (j+startRow);
                for(var i = 0; i < colCount; i++){
                    c = cs[i];
                    p.id = c.id;
                    p.css = i == 0 ? 'x-grid3-cell-first ' : (i == last ? 'x-grid3-cell-last ' : '');
                    p.attr = p.cellAttr = "";
                    p.value = c.renderer(r.data[c.name], p, r, rowIndex, i, ds, this.grid);
                    p.style = c.style;
                    if(p.value == undefined || p.value === "") p.value = "*";
                    if(r.dirty && typeof r.modified[c.name] !== 'undefined'){
                        p.css += ' x-grid3-dirty-cell';
                    }
                    cb[cb.length] = ct.apply(p);
                }
                var alt = [];
                if(stripe && ((rowIndex+1) % 2 == 0)){
                    alt[0] = "x-grid3-row-alt";
                }
                if(r.dirty){
                    alt[1] = " x-grid3-dirty-row";
                }
                rp.cols = colCount;
                if(this.getRowClass){
                    alt[2] = this.getRowClass(r, rowIndex, rp, ds);
                }
                rp.alt = alt.join(" ");
                rp.cells = cb.join("");
                buf[buf.length] =  rt.apply(rp);
            }
            return buf.join("");
        }
    });

  2. #2
    Sencha - Architect Dev Team aconran's Avatar
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    Default


    No, there is currently no really clean way to access the grid from within a column renderer. This is how I've done it in the past without any overriding:
    Code:
    renderer: (function(v) {
        var txt = '<img src="{0}" />';
        var state = this.getStatus(v);
        return String.format(txt, state ? 'lock.png' : 'delete.png');
    }).createDelegate(this)
    When doing this from within a Grid subclass you will now have direct access to any of the grid methods/configurations/etc.

    I agree that we should add the ability to access the grid either through an argument or a this scope.
    Aaron Conran
    @aconran
    Sencha Architect Development Team

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