title: ExtJS How to submit a form and a store at one request?
body: <p>Imagine two forms and one grid. Form A consists of comboxes. The boxes show data from database. The user selects the comboboxes and the result is a new record of the grid's store. It is also possible to put new values/records into the comboboxes. (No database insert)
  Form B consists of several textfields. Its kind of MasterDetail. Grid is Master, Form B is Detail. At the end i want to submit form B and the grid`s store at one request (ajax). At server-side i want to store the detail data and connect them with existing records or even create new records and connect them. I want to run that operations into transaction context.</p>
  
  <p>Now i don't know what is good/best practise. I tried to use the sync method of the grid`s store and include the form (form B) values as extraParams. That works, but it is possible that after successfull request i need to do another request with same (untouched) store (only form B changes), so i would have to reset records states. (sync performs changes only)</p>
  
  <p>Maybe a simple Ext.ajax.request() would to the job, but how to pass the store? I can add form B values as param, but i don`t know how to add the store? Do i need to add every record item to the params config by my own? </p>
  
  <p>info: server-side is php, db is mysql</p>