[web2py] Re: Need more than one value to unpack

[Anthony]

There's a bug in your custom validator code -- should be:

     self.error_message = error_message


On Tuesday, January 7, 2014 1:12:51 PM UTC-5, Akash Agrawall wrote:
>
> on doing the change you mentioned a ticket comes up..... 
>
> Traceback (most recent call last):
>   File "/home/hornet632/webapps/joyofreading/web2py/gluon/restricted.py", 
> line 217, in restricted
>     exec ccode in environment
>   File 
> "/home/hornet632/webapps/joyofreading/web2py/applications/AK_M14/models/db.py"
>  <https://joyofreading.org/admin/default/edit/AK_M14/models/db.py>, line 125, 
> in <module>
>     db.Field('Category','string',requires=IS_CATEGORYIT()),
>   File 
> "/home/hornet632/webapps/joyofreading/web2py/applications/AK_M14/models/db.py"
>  <https://joyofreading.org/admin/default/edit/AK_M14/models/db.py>, line 105, 
> in __init__
>     self.error_message = error
> NameError: global name 'error' is not defined
>
>
>
> On Tuesday, January 7, 2014 3:21:09 AM UTC+5:30, Anthony wrote:
>>
>> Yes, please provide more detail.
>>
>> Also, requires=IS_CATEGORYIT should be requires=IS_CATEGORYIT().
>>
>> Anthony
>>
>> On Monday, January 6, 2014 3:41:35 PM UTC-5, Dave S wrote:
>>>
>>> On Monday, January 6, 2014 12:32:01 PM UTC-8, Akash Agrawall wrote:
>>>>
>>>> I am getting this error:
>>>> "Need more than one value to unpack"
>>>>
>>>>
>>> Can you tell us which line the error message is referencing?  Is there a 
>>> traceback in the ticket?
>>>
>>> /dps
>>>
>>>
>>>  
>>>
>>>> *db.py:*
>>>> class IS_CATEGORYIT(object):
>>>>     def __init__(self, error_message="Zip code not allowed"):
>>>>         self.error_message = error
>>>>     def __call__(self, value):
>>>>         error = None
>>>>         print len(value)
>>>>         if len(value)==0:
>>>>             error = self.error_message
>>>>         return (value, error)
>>>> db.define_table('book',
>>>>                 db.Field('Name','string'),
>>>>                 db.Field('Category','string',requires=IS_CATEGORYIT),
>>>>                 db.Field('Quantity','integer'),
>>>>                 db.Field('ISBN','string',unique=True),
>>>>                 db.Field('Age_group','list:string', 
>>>> requires=IS_IN_SET(['1-4','5-8','9-12','13-17'])),
>>>>                 
>>>> db.Field('entry_date','date',default=datetime.date.today(),requires=IS_DATE(format=('%d-%m-%Y'))),
>>>>                 db.Field('Description','text'),
>>>>                 db.Field('Image','upload',uploadfield='picture_file'),
>>>>                 db.Field('picture_file','blob'),
>>>>                 db.Field('Available','integer'),
>>>>                 db.Field('Author','string'),
>>>>                 
>>>> db.Field('Link','string',requires=IS_EMPTY_OR(IS_URL())))
>>>>
>>>> db.book.Description.widget= lambda field,value: 
>>>> SQLFORM.widgets.text.widget(field,value,_style='width:400px',_rows=5)
>>>> db.book.Category.requires=IS_IN_SET(['ficton','non-fiction','action and 
>>>> adventure','travel','biography','story'],multiple=True,zero=None),IS_NOT_EMPTY(error_message="cannot
>>>>  
>>>> be empty")
>>>> db.book.Category.widget= lambda field,value: 
>>>> SQLFORM.widgets.checkboxes.widget(field,value)
>>>>
>>>> *controller: default.py*
>>>> def add_book():
>>>>         form1=SQLFORM(db.book)
>>>>         form1.add_button('Cancel', URL('add_book'))
>>>>         if form1.accepts(request.vars,session):
>>>>                 response.flash="Book Inserted"
>>>>         elif form1.errors:
>>>>                 response.flash="Errors in form"
>>>>         return dict(form1=form1)
>>>>
>>>> *view:add_book.html*
>>>> {{=form1.custom.begin}}
>>>> <table>
>>>> <tr><td  style="width:51%">Name&nbsp;<span 
>>>> style="color:red;">*</span>:</td><td> {{=form1.custom.widget.Name
>>>> }}</td></tr>
>>>> <tr><td> Quantity&nbsp;<span style="color:red;">*</span>:</td><td> 
>>>> {{=form1.custom.widget.Quantity}}</td></tr>
>>>> <tr><td  style="width:51%">Available&nbsp;<span 
>>>> style="color:red;">*</span>:</td><td> 
>>>> {{=form1.custom.widget.Available}}</td></tr>
>>>> <tr><td  style="width:51%">ISBN&nbsp;<span style="color:red;">*</span>: 
>>>> </td><td>{{=form1.custom.widget.ISBN}}</td></tr>
>>>> <tr><td  style="width:51%">Entry Date&nbsp;<span 
>>>> style="color:red;">*</span>: 
>>>> </td><td>{{=form1.custom.widget.entry_date}}</td></tr>
>>>> </table>
>>>> &nbsp;
>>>> <span style="color:#666666;" >Category</span><span 
>>>> style="color:red;">*</span>: &nbsp;&nbsp;
>>>> <br/>
>>>> <span style="position:relative;left:43%;color:rgb(102, 102, 
>>>> 102);"><label class="checkbox 
>>>> inline">{{=form1.custom.widget.Category[0]}}</label></span>
>>>> <span style="position:relative;left:50%;color:rgb(102, 102, 
>>>> 102);"><label class="checkbox 
>>>> inline">{{=form1.custom.widget.Category[1]}}</label></span><br/>
>>>> <span style="position:relative;left:43%;color:rgb(102, 102, 
>>>> 102);"><label class="checkbox 
>>>> inline">{{=form1.custom.widget.Category[3]}}</label></span>
>>>> <span style="position:relative;left:50.5%;color:rgb(102, 102, 
>>>> 102);"><label class="checkbox 
>>>> inline">{{=form1.custom.widget.Category[4]}}</label></span><br/>
>>>> <span style="position:relative;left:43%;color:rgb(102, 102, 
>>>> 102);"><label class="checkbox 
>>>> inline">{{=form1.custom.widget.Category[5]}}</label></span>
>>>> <span style="position:relative;left:51%;color:rgb(102, 102, 
>>>> 102);"><label class="checkbox 
>>>> inline">{{=form1.custom.widget.Category[2]}}</label></span>
>>>> </tr>
>>>>  </tr>
>>>> <table>
>>>> <tr><td style="width:45%">Age Group&nbsp;<span 
>>>> style="color:red;">*</span>:</td> 
>>>> <td>{{=form1.custom.widget.Age_group}}</td></tr>
>>>> <tr><td style="width:45%">Author:</td><td> 
>>>> {{=form1.custom.widget.Author}}</td></tr>
>>>> <tr><td style="width:45%">Amazon Link:</td> 
>>>> <td>{{=form1.custom.widget.Link}}</td></tr>
>>>> <tr><td style="width:45%">Description:</td><td> 
>>>> {{=form1.custom.widget.Description}}</td></tr>
>>>> <tr><td style="width:45%">Image:</td><td> 
>>>> {{=form1.custom.widget.Image}}</td></tr>
>>>> <tr><td 
>>>> style="width:45%"></td><td>{{=form1.custom.submit}}&nbsp;&nbsp;&nbsp;{{=form1[0][11][1][1]}}</td></tr>
>>>> </table>
>>>> {{=form1.custom.end}}
>>>>
>>>> Please hava look at this..... need reply to this..... ASAP..... thanx 
>>>> in advance
>>>>
>>>>

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