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Sharing function in openerp

I have a select box in account.invoice.line named form_type. It has three choices:

1) form_a
2) form_b
3) form_c

There is also an integer field named flag in account.invoice.line. When form_c is selected, the flag value must be set to 1; otherwise, if either form_a or form_b is selected, the flag value must be set to 0. I wrote an exchange function in this case, but it does not work. Can anybody help me? What is wrong in my code?

def onchange_form_type(self, cr, uid, ids, invoice, context=None):
    val={}
    flag=0
    invoice = self.pool.get('account.invoice.line').browse(cr, uid, invoice)
    for invoice in self.browse(cr, uid, ids, context=context):
        if invoice.form_type=="form_c":
            flag="1"
        else:
            flag="0"

    print flag
    val = { 'flag': flag, }
    return {'value': val}

My xml in account.invoice.line for sharing:

<field name="form_type" on_change="onchange_form_type(form_type)"/>
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1 answer

on-change , . , "form_type" , ( browse ).

, on_change :

def onchange_form_type(self, cr, uid, ids, form_type, context=None):

    val={}
    flag=0
    if form_type == 'form_c':
        flag="1"
    val = { 'flag': flag }
 return {'value': val}
+6

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