Hi Anthony,
Thanks for this useful information.
I tried
searchform.process(keepvalues=True).accepted
But it evaluates to False.
While below given line evaluates to True.
if searchform.accepts(request.vars,keepvalues=True):
I dont know why does it happens. Have I done anything wrong over here?
Could you please suggest any solution to achieve sorting and paging in this
scenario?
Thank you.
On Tuesday, 10 September 2013 16:43:22 UTC+5:30, Anthony wrote:
> You are processing the form twice:
>
> if searchform.accepts(request.vars,keepvalues=True):
> searchform.process()
>
> searchform.process() ultimately calls .accepts() -- no need to call both.
> The preferred method is now:
>
> if searchform.process(keepvalues=True).accepted:
>
> Also, once you load the first page of the grid, you won't be able to load
> additional pages or do any sorting because in the controller, the grid is
> only created within the "if searchform.accepts(...)" condition, which only
> happens when the search form is submitted (not on other clicks within the
> grid).
>
> Finally, even if the grid could be navigated, your code is re-filling the
> temp db with the same data on every request, which is inefficient.
>
> Anthony
>
> On Tuesday, September 10, 2013 12:28:47 AM UTC-4, Gliese 581 g wrote:
>>
>> Hi Massimo,
>> Thanks for suggesting this solution. I am now able to display a gird on
>> my page with pagination and sorting options available. But whenever I click
>> on page number or try to sort a column by clicking on its header, nothing
>> happens. I get a blank page. I tried to debug it and found that when I
>> click on any page number, post back takes place but form doesnt get
>> validated(validation fails) and I do not get to see any grid. I am posting
>> my code here. Please correct me if I have done anything wrong in it.
>>
>> def index():
>> result=None
>> x=None
>> searchform=SQLFORM.factory(
>> Field('id', 'unicode',requires=empty_to_none),
>> Field('account','unicode',requires=empty_to_none),
>> Field('fromdate','unicode',requires=empty_to_none),
>> Field('todate','unicode',requires=empty_to_none),
>> Field('name','unicode',requires=empty_to_none),
>> Field('status','integer'),
>>
>> Field('method',requires=IS_EMPTY_OR(IS_IN_SET(['Method1','Method2','Method3'],
>>
>> sort=True, zero='Select'))),
>>
>> Field('type','unicode',requires=IS_EMPTY_OR(IS_IN_SET(['Type1','Type2',],
>> sort=True, zero='Select'))),
>> Field('altname','unicode',requires=empty_to_none),
>>
>> Field('group','unicode',requires=IS_EMPTY_OR(IS_IN_SET(['Group1','Group2',],
>> sort=True, zero='Select'))),
>> Field('assignee','unicode',requires=empty_to_none),
>> submit_button = 'Search'
>> )
>>
>> ##THIS CONDITION FAILS DURING POSTBACK(WHEN I CLICK ON PAGE NUMBERS OR
>> COLUMN HEADERS FOR SORTING)
>> if searchform.accepts(request.vars,keepvalues=True):
>> searchform.process()
>> id=searchform.vars.id
>> status=searchform.vars.status
>> method=searchform.vars.method
>> name=searchform.vars.name
>> account=searchform.vars.account
>> fromdate=searchform.vars.fromdate
>> todate=searchform.vars.todate
>> type=searchform.vars.type
>> altname=searchform.vars.altname
>> assignee=searchform.vars.assignee
>> group=searchform.vars.group
>> ##THIS METHOD RETURNS A LIST OF OBJECTS
>> result=__get_objects(id, status, method, name,
>> account, fromdate, todate, type, altname,
>> assignee, group)
>> ##THIS IS CODE TO CREATE IN MEMORY TEMPORARY DATABASE
>> fields = [Field('ID'), Field('Method'), Field('Date'),
>> Field('Status'), Field('Account'), Field('Name'),
>> Field('Amount1'), Field('Amount2'), Field('Type')
>> ]
>>
>> temp_db = cache.ram('tmp_db',lambda:
>> DAL('sqlite:memory').define_table('mytable',*fields)._db, None)
>> temp_db.mytable.truncate()
>> for obj in result['output']:
>> temp_db.mytable.insert(ID=obj['id'],
>> Method=obj['method'],
>> Date=obj['date'],
>> Status=obj['status'],
>> Account=obj['account'],
>> Name=obj['name'],
>> Amount1=obj['amount1'],
>> Amount2=obj['amount2'],
>> Type=obj['type'])
>>
>> x = SQLFORM.grid(temp_db.mytable,create=False, deletable=False,
>> editable=False, maxtextlength=64,
>> paginate=2,searchable=False,details=False)
>> else:
>> response.flash = 'please fill the form'
>> return dict(form=searchform,result=result,x=x)
>>
>>
>> When postback happens due to any sorting or paging action,
>> *searchform.accepts(request.vars,keepvalues=True)
>> *fails and no grid gets displayed. Please help me to fix this.
>>
>> Thank you
>>
>> On Sunday, 8 September 2013 19:17:03 UTC+5:30, Massimo Di Pierro wrote:
>>
>>> You cannot unless you first load the data in a database. You can use a
>>> temporary in memory database like this:
>>>
>>> fields = [Field('one'), Field('two'), Field('three'), ...]
>>> temp_db = cache.ram('tmp_db',lambda:
>>> DAL('sqlite:memory').define_table('mytable',*fields)._db, None)
>>>
>>> temp_db.mytable.truncate()
>>> temp_db.mytable.insert(....)
>>> form = SQLFORM.grid(temp_db.mytable)
>>>
>>>
>>> On Sunday, 8 September 2013 05:35:13 UTC-5, Gliese 581 g wrote:
>>>>
>>>> Hi Massimo,
>>>> I will try to be more specific.
>>>> I am developing a web2py application(APP1) which works on the data
>>>> which it gets from another web2py application(APP2).
>>>> We do not have access to the database of APP2, we access their data
>>>> through jsonrpc web services exposed by APP2.
>>>> Now, there is an API(get_objects) of APP2 which gives us a list of
>>>> certain type of objects. APP2 internally fetch this data from its database
>>>> and convert it to a list of specific type of objects.
>>>> I want it to be displayed in a table with sorting and paging
>>>> capabilities.
>>>> Can I use web2py's SQLFORM.grid to achieve this?
>>>> Please suggest me any solution.
>>>>
>>>> Thank you.
>>>>
>>>> On Friday, 6 September 2013 20:26:54 UTC+5:30, Gliese 581 g wrote:
>>>>>
>>>>> **
>>>>>
>>>>> I am working on a project where we have a different subsystem whose
>>>>> API returns a list of certain type of objects.
>>>>>
>>>>> I want it to be displayed on my form. Can I use SQLForm.grid for this?
>>>>> Please suggest.
>>>>>
>>>>
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