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我試圖根據下拉列表中的選擇來達到與發票行表單類似的效果，其中某些列出現或消失（編輯視圖？）。如何使用fields_get方法來編輯視圖？
我想研究account_invoice_layout中實現這種效果的代碼，但它有點難以理解。
下面是完整的代碼：
class account_invoice_line(osv.osv):
def move_line_get_item(self, cr, uid, line, context=None):
if line.state != 'article':
return None
return super(account_invoice_line, self).move_line_get_item(cr, uid, line, context)
def fields_get(self, cr, uid, fields=None, context=None):
article = {
'article': [('readonly', False), ('invisible', False)],
'text': [('readonly', True), ('invisible', True), ('required', False)],
'subtotal': [('readonly', True), ('invisible', True), ('required', False)],
'title': [('readonly', True), ('invisible', True), ('required', False)],
'break': [('readonly', True), ('invisible', True), ('required', False)],
'line': [('readonly', True), ('invisible', True), ('required', False)],
}
states = {
'name': {
'break': [('readonly', True),('required', False),('invisible', True)],
'line': [('readonly', True),('required', False),('invisible', True)],
},
'product_id': article,
'account_id': article,
'quantity': article,
'uos_id': article,
'price_unit': article,
'discount': article,
'invoice_line_tax_id': article,
'account_analytic_id': article,
}
res = super(account_invoice_line, self).fields_get(cr, uid, fields, context)
for field in res:
if states.has_key(field):
for key,value in states[field].items():
res[field].setdefault('states',{})
res[field]['states'][key] = value
return res
def onchange_invoice_line_view(self, cr, uid, id, type, context=None, *args):
if (not type):
return {}
if type != 'article':
temp = {'value': {
'product_id': False,
'uos_id': False,
'account_id': False,
'price_unit': False,
'price_subtotal': False,
'quantity': 0,
'discount': False,
'invoice_line_tax_id': False,
'account_analytic_id': False,
},
}
if type == 'line':
temp['value']['name'] = ' '
if type == 'break':
temp['value']['name'] = ' '
if type == 'subtotal':
temp['value']['name'] = 'Sub Total'
return temp
return {}
def create(self, cr, user, vals, context=None):
if vals.has_key('state'):
if vals['state'] == 'line':
vals['name'] = ' '
if vals['state'] == 'break':
vals['name'] = ' '
if vals['state'] != 'article':
vals['quantity']= 0
vals['account_id']= self._default_account(cr, user, None)
return super(account_invoice_line, self).create(cr, user, vals, context)
def write(self, cr, user, ids, vals, context=None):
if vals.has_key('state'):
if vals['state'] != 'article':
vals['product_id']= False
vals['uos_id']= False
vals['account_id']= self._default_account(cr, user, None)
vals['price_unit']= False
vals['price_subtotal']= False
vals['quantity']= 0
vals['discount']= False
vals['invoice_line_tax_id']= False
vals['account_analytic_id']= False
if vals['state'] == 'line':
vals['name'] = ' '
if vals['state'] == 'break':
vals['name'] = ' '
return super(account_invoice_line, self).write(cr, user, ids, vals, context)
def copy_data(self, cr, uid, id, default=None, context=None):
if default is None:
default = {}
default['state'] = self.browse(cr, uid, id, context=context).state
return super(account_invoice_line, self).copy_data(cr, uid, id, default, context)
def _fnct(self, cr, uid, ids, name, args, context=None):
res = {}
lines = self.browse(cr, uid, ids, context=context)
account_ids = [line.account_id.id for line in lines]
account_names = dict(self.pool.get('account.account').name_get(cr, uid, account_ids, context=context))
for line in lines:
if line.state != 'article':
if line.state == 'line':
res[line.id] = '-----------------------------------------'
elif line.state == 'break':
res[line.id] = 'PAGE BREAK'
else:
res[line.id] = ' '
else:
res[line.id] = account_names.get(line.account_id.id, '')
return res
_name = "account.invoice.line"
_order = "invoice_id, sequence asc"
_description = "Invoice Line"
_inherit = "account.invoice.line"
_columns = {
'state': fields.selection([
('article','Product'),
('title','Title'),
('text','Note'),
('subtotal','Sub Total'),
('line','Separator Line'),
('break','Page Break'),]
,'Type', select=True, required=True),
'sequence': fields.integer('Sequence Number', select=True, help="Gives the sequence order when displaying a list of invoice lines."),
'functional_field': fields.function(_fnct, arg=None, fnct_inv=None, fnct_inv_arg=None, type='char', fnct_search=None, obj=None, store=False, string="Source Account"),
}
def _default_account(self, cr, uid, context=None):
cr.execute("select id from account_account where parent_id IS NULL LIMIT 1")
res = cr.fetchone()
return res[0]
_defaults = {
'state': 'article',
'sequence': 0,
}
account_invoice_line（）
什麼是fields_get方法做什麼呢？何時執行？上述代碼如何管理編輯視圖？
謝謝。