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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