在 EXTJS 中,我将为我的网格使用模型和存储。现在是有时json与模型不匹配的问题。然后在我的模型中将有更少的信息。发生这种情况时,EXTJS 不会在网格中显示任何数据。所以我找了一个修复程序,发现了这个:
Ext.define('App.Reader', {
extend: 'Ext.data.reader.Json',
extractData: function(root) {
var me = this,
values = [],
records = [],
Model = me.model,
i = 0,
length = root.length,
idProp = me.getIdProperty(),
node, id, record;
if (!root.length && Ext.isObject(root)) {
root = [root];
length = 1;
}
for (; i < length; i++) {
node = root[i];
values = me.extractValues(node);
id = me.getId(node);
record = new Model(values, id, node);
records.push(record);
if (me.implicitIncludes) {
me.readAssociated(record, node);
}
}
return records;
},
extractValues: function(data) {
var fields = this.getFields(),
i = 0,
length = fields.length,
output = {},
field, value;
for (; i < length; i++) {
field = fields[i];
value = this.extractorFunctions[i](data);
if(value === undefined)
{
Ext.iterate(fields, function(key, val) {
if (data[key] === undefined & i==val) {
console.log( "Model field <" + key.name + "> does not exist in data/node.");
value = "INVALID OR MISSING FIELD NAME";
var p = 0;
for(var prop in data) {
if(p==i){
if(data.hasOwnProperty(prop))console.log("Instead of <" + key.name + "> we have <" + prop + "> with value <" + data[prop]+ ">");
}
p++;
}
}
}, this);
}
output[field.name] = value;
}
return output;
}
});
var myReader = new App.Reader({
type:'json'
});
我在网上找到了这个。但是当我将它与 EXTJS 4.1.1 一起使用时,ext-all 中出现错误:TypeError: j is undefined。
我应该在哪里寻找解决方案?