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

[Anthony]

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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