javascript - ExtJS manipulating propertygrid source information -

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I am using a property grid in an even way, in a grid tribute to generate an AJAX request Providing a button, passing the back-end function to the source information that runs a SQL script.

The process of getting back-end to source information is proving difficult, though; Looking at the information in the Browser Debug Console, the result shows that it can be weighted (sample information from the console below): 

  [cnc: "", cutter_id: "", dimension : "", Id: "71", internal_finish: "standard white", item_key: "4", Material_ID: "N / A", Production_Item_Type_ID: "frame (s)", production_note: "", quantity: "1 "Individual items can be selected, that is, I can get and set: Ready_by_Date:" 31 Dec 2014 ", Survey_Notes:" ", Thickness_Depth:" 95 ", Type_of_Work_ID:" Complete New "] < / Code>  
  Source ['Quantity'] , for example.  
 However, I can not provide information in a manageable format; Nor can I encode (or decode) JSON information from source.  
 I have less than would be repeated through at source and information would add to a string, which is then encoded to JSON back-end.  
 How does the greener source work as a data source, because I could not understand it correctly? By which method can I work to generate information originating from property?   
 
 
 Method property grid gives the source as an object, information through it to add Loop  
 sample bella here:

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