Hi Daz,

On 9 October 2012 20:58, DAZ <[email protected]> wrote:

> Hi Ben,
>
> Thanks for the reply. This is what I thought was the case, but I just
> wondered if there were any nice DM methods that I didn't know about that
> parsed strings in a certain format, ready to insert into the database as a
> Date object.
>
> I've found that the jQuery datepicker gives the date in this format
> 10/09/2012, so I have added the following method to the Song class to
> change it into a Date object:
>
>   def released_on=date
>     dates = date.split('/').map{ |s| s.to_i }
>     super(Date.new(dates[2],dates[0],dates[1]))
>   end
>

I'd suggest:

def released_on=date
  super(Date.parse(date).iso8601)
end

Cheers,
Ben


>
> Not sure if that's the best way of doing it, but it certainly works!
>
> thanks for the help and feedback!
>
> DAZ
>
>
> On Tuesday, October 9, 2012 8:14:23 PM UTC+1, benlovell wrote:
>
>> On 9 October 2012 19:48, DAZ <[email protected]> wrote:
>>
>>> Thanks for the reply Ben.
>>>
>>> I think my question is more to do with DataMapper, because DataMapper
>>> requires the format to be a Date or DateTime object. My question is how I
>>> change what is effectively a string in the params hash into a date object
>>> in a neat way. Even if I used a date picker, I would assume that it sends
>>> some sort of string to the server rather than an actual Date object?
>>>
>>>
>> In your example form you have three separate fields which you need to
>> parse into a valid Date. You cannot expect DM to do this on your behalf nor
>> should you. DM resources can parse date strings as properties of course,
>> but you need to massage your params to get the date into an acceptable
>>  format. My point was that this would be a responsibility of your web
>> framework or front-end not DM.
>>
>> A similar example of this is the DateHelper.date_select in rails which
>> does some hocus pocus with param suffixes and Date::civil to get the values
>> from the three options into a proper date that AR can understand.
>>
>> Cheers,
>> Ben
>>
>>
>>> Hope that clarifies my question - is there a neat way of converting
>>> dates to Date objects or is there just some donkey work that needs doing
>>> before creating the resource?
>>>
>>> cheers,
>>>
>>> DAZ
>>>
>>>
>>>
>>> On Sunday, October 7, 2012 2:07:30 PM UTC+1, benlovell wrote:
>>>
>>>> I think this question would be better served in whichever list pertains
>>>> to your chosen web framework (Sinatra I suspect?) but the simple answer is
>>>> to use one of the many available date pickers.
>>>>
>>>> http://trentrichardson.com/**exa**mples/timepicker/<http://trentrichardson.com/examples/timepicker/>
>>>>
>>>> Regards,
>>>> Ben
>>>>
>>>> Sent from my iPhone
>>>>
>>>> On 7 Oct 2012, at 11:48, DAZ <[email protected]> wrote:
>>>>
>>>> I have a Song class that looks like this:
>>>>
>>>>   class Song
>>>>     include DataMapper::Resource
>>>>     property :id, Serial
>>>>     property :title, String
>>>>     property :lyrics, Text
>>>>     property :length, Integer
>>>>     property :released_on, Date
>>>>   end
>>>>
>>>> Here's my form for creating it:
>>>>
>>>>   <form action="/songs" method="POST">
>>>>     <input id="title" name="song[title]" type="text" />
>>>>     <input id="length" name="song[length]" type="number" />
>>>>     <input id="day" max="31" min="1" name="day" type="number" />
>>>>     <input id="month" max="12" min="1" name="month" type="number" />
>>>>     <input id="year" max="1998" min="1940" name="year" type="number" />
>>>>     <textarea id="lyrics" name="song[lyrics]"></**textarea**>
>>>>     <input type="submit" value="Save Song" />
>>>>   </form>
>>>>
>>>> I want to be able to create a new song resource by using
>>>>
>>>>   song = Song.create(params[:song])
>>>>
>>>> The problem I'm having is with the released_on property, since it
>>>> needs to be a Date object.
>>>>
>>>> At the moment, I am doing this:
>>>>
>>>>   date = Date.new(params[:year].to_i,**pa**rams[:month].to_i,params[:**
>>>> day]**.to_i)
>>>>   song = Song.create(params[:song].**merg**e(released_on: date))
>>>>
>>>> Does anybody know any nicer ways of entering a date into a form and
>>>> being able to simply call Song.create(params[:song]) without having to
>>>> manipulate the form parameters first?
>>>>
>>>> cheers,
>>>>
>>>> DAZ
>>>>
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