How to solve: AttributeError 'datetime.datetime' object has no attribute 'get'

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Hello,

I am new to OpenERP development and I am trying to learn how to assign functions to fields so I can retrieve values based on my needs, but after following the manual or taking a look at the code from another modules I can't seem to get it right.

I tried a really simple function to retrieve the current time into a field. Here is the code to my function

def get_text(self, cr, uid, ids, fields, arg, context):
    #records = self.browse(cr, uid, ids)
    #sale = 'Some Text'
    dd = datetime.now()
    return dd
And this is how I call the get_text function
'varText': fields.function(get_text, obj='sim.student', method=True, store=False, type='string', string='Text')
Whatever I try in my get_text function I always get an error like the following:
AttributeError: 'datetime.datetime' object has no attribute 'get'
If I comment the line starting with dd and uncomment the line starting with sale the error would be
AttributeError: 'str' object has no attribute 'get'
If anyone can give me a tip on what I am doing wrong I will really appreciate it!
Thanks!


   
    
     
      
       
        In you field singature the
        
         obj
        
        is not requied as it is not a relation type field.
       
       
        
         type='string'
        
        will not work. You should use
        
         type='char'
        
       
       
        but as you try to get a datetime fields the correct type should be
        
         datetime
        
        .
       
       
        The return of
        
         get_text
        
        should be a dict with keys the ids of the record and values the related values
       
      
      
       You should have a look at the
       
        hr_attendance/hr_attendance.py
       
       of addons file
      
      
       
        'last_sign': fields.function(_last_sign, type='datetime', string='Last Sign')
       
       is a simple sample
      
      
       Odoo is a suite of open source business apps that cover all your company needs: CRM, eCommerce, accounting, inventory, point of sale, project management, etc.
      
      
       Odoo's unique value proposition is to be at the same time very easy to use and fully integrated.