On Thursday, June 9, 2016 at 1:42:29 PM UTC-7, desta wrote:
>
> The book part that I mentioned is a part of much larger form, that has 
> more dynamic elements. So I was thinking it was a good idea to store the 
> whole form into a single table to keep things manageable. If I understand 
> correctly you suggest to break up the form on db-side, and create a table 
> for each dynamic part of the form (similar to the books example).
>
>
You may want to give us a more detailed example, but using a temporary 
table to hold things is certainly one possible solution.

/dps

 

> On Thursday, June 9, 2016 at 11:35:28 PM UTC+3, Dave S wrote:
>>
>>
>>
>> On Thursday, June 9, 2016 at 1:19:35 PM UTC-7, desta wrote:
>>>
>>> Well, I am really not sure how to implement this on database-side 
>>> either, so any feedback from you, more experienced people, would be very 
>>> insightful. 
>>>
>>> Here is an example form of what I mean:
>>>
>>> A form that a user can enter books they like. So there is a title field 
>>> that accepts the name of the book. Also there is a button 'Add more books' 
>>> that will create an additional text field for the user to enter an 
>>> additional book title. The amount of books a user can add is unconstrained, 
>>> therefore, one user may add only 1 book and other user can add 100 books.
>>>
>>> I don't see how it is possible to store such information in a table in a 
>>> conventional way. One way I am thinking to implement this, is to create a 
>>> JSON string that contains all the information of the form and just enter 
>>> that into the table. What do you think about this method?
>>>
>>> Thanks again.
>>>
>>
>>
>> An additional book would be in additional row in a table.
>>
>> ---------------------------------------------------------
>> |author      |   title                                  |
>> ---------------------------------------------------------
>> | Henry X    | The Importance of Y                      |
>> ---------------------------------------------------------
>> | Dorothy D  | Information Warfare and Security         |
>> ---------------------------------------------------------
>> | Peter D    | An Exploration of Writing                |
>> ---------------------------------------------------------
>> | Phoebe S   | Birding on Borrowed Time                 |
>> ---------------------------------------------------------
>>            | add more  |
>>            -------------
>>
>>
>>>
>>> On Thursday, June 9, 2016 at 10:23:58 PM UTC+3, Dave S wrote:
>>>>
>>>>
>>>>
>>>> On Thursday, June 9, 2016 at 11:47:43 AM UTC-7, desta wrote:
>>>>>
>>>>> Hello everyone,
>>>>>
>>>>> My current task is to create a form where fields can be added/removed. 
>>>>> Is it possible to handle such forms with web2py?
>>>>>
>>>>> Thanks.
>>>>>
>>>>
>>>> I am not sure I understand what you want to do.
>>>>
>>>> Is it
>>>>
>>>> a) have a database table that doesn't change its layout, but you want 
>>>> to present different sets of columns at different times?
>>>> b) have a database table that doesn't change its layout, but you want 
>>>> to hide or unhide columns as the user views the data?
>>>> c) something else?
>>>>
>>>> a) is not difficult, if you use the SQLFORM and its relatives ... there 
>>>> are settings for hiding fields.
>>>> b) is a little more difficult; you may have to choose to reload the 
>>>> page, use ajax requests to reload the form, or use javascript to hide 
>>>> columns yourself.
>>>>
>>>> <URL:http://web2py.com/books/default/chapter/29/07/forms-and-validators
>>>> >
>>>>
>>>> Good luck!
>>>>
>>>> /dps
>>>>
>>>>

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