El Thursday 29 January 2009 14:35:28 Andreas Eckert escribió:
> Here to share my solution:
>
> Got it working without hardcoding of any controller/model names, hence
> should be easily deployable to any other controller
>
> I have put the following into my Contractversion controller:
>
> def conditions_for_collection
> # we need to remove the text "version" from the end of the
> controller name to get the originating controller
> source_controller =
> self.controller_name.camelize[0..self.controller_name.length-8]
> c = eval(source_controller.to_s
> +
> ".find_by_id
> (active_scaffold_constraints[active_scaffold_constraints.keys[0]])")
> # Could also use params[:controller].camelize to get the
> controller name, but I am not sure whether that covers all cases
> return [eval(self.controller_name.camelize.to_s
> +".table_name").to_s+".version <> ?", c.version] unless c.nil?
> return ""
> end
>
> I am not sure whether this is the most elegant way, recommendations of
> simplifying this are most welcome.
Some improvements:
- eval is slow, it's better to use send. Also you can get a class from a string
using constantize.
- You can get source model from versioned class with original_class
- Use values method instead of keys method to get the first key of a hash to
get the first value
- You can get the model class with self.controller_name.singularize.camelize,
or better, with self.active_scaffold_config.model
def conditions_for_collection
# we need to remove the text "version" from the end of the controller name
to get the originating controller
source_model = active_scaffold_config.model.original_class
record = source_model.find_by_id, active_scaffold_constraints.values[0]
["#{active_scaffold_config.model.table_name}.version != ?", record.version]
unless record.nil?
end
>
> On Jan 29, 2009, at 12:01 AM, Sergio Cambra .:: entreCables - Symbol
>
> Servicios Informáticos S.L. ::. wrote:
> > El Wednesday 28 January 2009 14:53:28 Andreas Eckert escribió:
> >> Thanks, works like expected. I added
> >>
> >> def conditions_for_collection
> >> ['contract_versions.version <> ?', 1]
> >> end
> >
> > Try with active_scaffold_constraints[:version]
> > If it doesn't work, try to dump active_scaffold_constraints to log
> > and look at
> > the key to use:
> > logger.debug active_scaffold_constraints.inspect
> >
> >> to the controller of the versioned model (Contractversion)
> >>
> >> Obviously I need to replace '1' with the current version number
> >> stored
> >> in the Contract record.
> >> Being new at Rails, how does the Contractversion controller know
> >> which
> >> Contract clicked on the "Version" link, i.e. how do I get the ID of
> >> the parent (the caller) ?
> >>
> >> Thanks
> >> Andreas
> >>
> >>
> >>
> >> On Jan 27, 2009, at 6:05 PM, Sergio Cambra .:: entreCables - Symbol
> >>
> >> Servicios Informáticos S.L. ::. wrote:
> >>> El Monday 26 January 2009 13:49:11 Kumala escribió:
> >>>> I am using activescaffold and acts_as_versioned.
> >>>> I have 2 models: contract and contractversion. I have added a
> >>>> "Versions" link to my scaffold using:
> >>>> config.nested.add_link("Versions", [:contractversions])
> >>>>
> >>>> Unfortunately, when clicking on the "Versions" link in the contract
> >>>> model, it shows all contract versions, including the current
> >>>> contract
> >>>> values.
> >>>>
> >>>> How can I prevent the latest version from being shown?
> >>>
> >>> You can put conditions for the find method defining a
> >>> conditions_for_collection method.
> >>>
> >>> --
> >>> Sergio Cambra .:: entreCables S.L. ::.
> >>> Nicolás Guillén 6, locales 2 y 3. 50.018 Zaragoza
> >>> T) 902 021 404 F) 976 52 98 07 E) [email protected]
> >
> > --
> > Sergio Cambra .:: entreCables S.L. ::.
> > Nicolás Guillén 6, locales 2 y 3. 50.018 Zaragoza
> > T) 902 021 404 F) 976 52 98 07 E) [email protected]
>
>
--
Sergio Cambra .:: entreCables S.L. ::.
Nicolás Guillén 6, locales 2 y 3. 50.018 Zaragoza
T) 902 021 404 F) 976 52 98 07 E) [email protected]
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