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I'm trying to figure how the .get works, i'm looking the code from sale.py and how the sequence is added to any saleOrder and trying to understand this.

if vals.get('sequence','New') == 'New':

As I understand the vals.get('sequence') will return the value from the sequence field.  But I don't know and I didn't find information about the use of the other parameters and how gets compared with the string "New" (Or if is a reserved word for a new register).

That New is used after in the value assignation for the 'sequence' field, as the following code shows.

 if vals.get('sequence','New') == 'New':
                vals['sequence']    =   self.env['ir.sequence'].next_by_code(sequence_name) 
                result              = super(feature,self).create(vals)
                return result

Hope you can help me with my question.

Regards.

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If the dictionary vals has a key 'xxx', then it will return vals['xxx']. If the dictionary doesn't have a key 'xxx', then 'yyy' will be returned.

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vals is just a standard Python dictionary.

dict.get(key, default=None)

used with key - it will return the value that matches

used with default - it will return the value that matches, or the default (None)


In the example you have posted, vals.get('sequence','New') will return the value of the key sequence, or New.  So: the code checks if there is a sequence key in vals, and if there isn't, creates one, and calls super after putting the newly created value into vals.


https://www.odoo.com/documentation/10.0/reference/orm.html

https://www.tutorialspoint.com/python/dictionary_get.htm

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