data json store

[fvinson]

I have a data store from json

    //Data Composition Reaction
    Ext.define('ReactionCompoModel', {
        extend: 'Ext.data.Model',
        fields: [{name:'leftR',type:'string'},{name:'rightR',type:'string'}]    
    });
    var storeReactionCompo = Ext.create('Ext.data.JsonStore', {
        model: 'ReactionCompoModel',
        proxy: {
            type: 'ajax',
            url: '../php/datareactioncompo_v2.php',
            extraParams: {idReaction:0},
            reader: {type: 'json' }
        }
    });

i want to recover the data

           storeReactionCompo.proxy.extraParams.idReaction= idReaction;
           storeReactionCompo.load();
           console.log(storeReactionCompo.getById(leftR));

the storeReactionCompo.load return :

[{"leftR":"substrat1 + substrat2","rightR":"Product1 +Product2"}]

storeReactionCompo.getById('leftR') give result : null
storeReactionCompo.get('leftR')); give storeReactionCompo.get is not a function

I don't anderstand ; How can i get the value substrat1 + substrat2 ?

Thank you

[scottmartin]

You can use the following"

store.load({
	callback: function(records, operation, success){
		console.log(records);
		console.log(records[0].get('name')); // multiple records; array based return
	}
});

You can use convert to create calculated values or perform this at the server.
http://docs.sencha.com/ext-js/4-1/#!...ld-cfg-convert

Scott.