javascript - How I'll create a model from json file? (ExtJS) -

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this model want create using json file

ext.define('users', {     extend: 'ext.data.model',     fields: [{name: 'user_id',  type: 'int'},     {name: 'user_name',  type: 'string'}] });

what have in order automatically create model, based on content of json response server?

in order have model created automatically, need include metadata field json data. metadata can used describe of fields model.

in extjs 4.1 documentation - ext.data.reader.json has section called response metadata describes basic use of feature.


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