Rails - May 2013 - STI convert object to other object

Hi

I''m using STI and want to convert one object to the other. The reason
to
why I''m using STI is that I have a report and a full report. First
someone
reports something and can only enter a few fields. Then and admin can 
convert this into a full report and fill out the full report. Using STI 
makes it easier to handle the views, validations etc.

When converting it I just go to the edit action of a full_report, fetch the 
report and converts it into a full report using the #becomes(FullReport) 
method. The issue is when I submit this form and I want to save it in the 
update action I do this:
@report = Report.find(params[:id])
@report = @report.becomes(FullReport) if @report.type.nil?

if @report.update_attributes(report_params) ....
....

The thing is that it doesn''t save the type as FullReport when I do
this.

Why is that? I can''t convert it, save it, reload and update it since
the
validations will fail.

So, how can I convert the object and update its attributes at the same time?

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Ok, the solution was to not use #becomes and instead just set the type 
field explicitly before saving.

//Linus


Den måndagen den 13:e maj 2013 kl. 10:19:08 UTC+2 skrev Linus
Pettersson:
>
> Hi
>
> I''m using STI and want to convert one object to the other. The
reason to
> why I''m using STI is that I have a report and a full report. First
someone
> reports something and can only enter a few fields. Then and admin can 
> convert this into a full report and fill out the full report. Using STI 
> makes it easier to handle the views, validations etc.
>
> When converting it I just go to the edit action of a full_report, fetch 
> the report and converts it into a full report using the 
> #becomes(FullReport) method. The issue is when I submit this form and I 
> want to save it in the update action I do this:
> @report = Report.find(params[:id])
> @report = @report.becomes(FullReport) if @report.type.nil?
>
> if @report.update_attributes(report_params) ....
> ....
>
> The thing is that it doesn''t save the type as FullReport when I do
this.
>
> Why is that? I can''t convert it, save it, reload and update it
since the
> validations will fail.
>
> So, how can I convert the object and update its attributes at the same 
> time?
>
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