Form collects multiple parameters from a select list (multiple enabled) what kind of code do i need in the controller ?
Stuart
Not making much progress here , so let me give more detail:
Form has this element -
select name=canindustry[category_id] size=“6” multiple=“multiple”> <%= options_from_collection_for_select @categories, :id, :name %> Params being submitted (example) Parameters : {“commit”=>“Create”, “canindustry”=>{“category_id”=>[“2”, “3”, “4”, “5”]},
The fields in the canindustry model are: id | candidate_id | category_id I want to insert multiple rows , so using above parameters
id | candidate_id | category_id | 1 11 2
2 11 3 3 11 4 4 11 5
Problem is in my controller where i"ve tried a few different ways with no success:
Right now I have this in the create action:
@canindustry.candidate_id = current_user.id
a = (params[:canindustry])
a.each {|x| a.canindustry.save
}
and getting back an error -
“You have a nil object when you didn’t expect it! The error occurred while evaluating nil.candidate_id=”
??? Stuart
Not much around on this googling. Anyone ever do this before ?
Dark Ambient wrote:
> > Not making much progress here , so let me give more detail: > > Form has this element - > select name=canindustry[category_id] size="6" multiple="multiple"> > <%= options_from_collection_for_select @categories, :id, :name %> > > Params being submitted (example) > *Parameters*: {"commit"=>"Create", "canindustry"=>{"category_id"=>["2", > "3", "4", "5"]}, > > The fields in the canindustry model are: id | candidate_id | > category_id > I want to insert multiple rows , so using above parameters > > id | candidate_id | category_id | > 1 11 2 > 2 11 3 > 3 11 4 > 4 11 5 > > Problem is in my controller where i"ve tried a few different ways with no > success: > Right now I have this in the create action: > > @canindustry.candidate_id = current_user.id >
I assume you set @canindustry somewhere to a proper object, but the error stated otherwise.
> a = (params[:canindustry]) > a.each {|x| a.canindustry.save > } >
Here I think params[:canindustry][:category_id] will give you the array of selected category ids. Each 'a' element is a String, which dnu #canindustry let alone #save.
Seems to me you need something like the following in your a.each block.
canindustry = Foo.new canindustry.candidate_id = current_user.id canindustry.category_id = x canindustry.save
Long www.edgesoft.ca
Dark Ambient wrote:
Not making much progress here , so let me give more detail:
Form has this element - select name=canindustry[category_id] size=“6” multiple=“multiple”>
<%= options_from_collection_for_select @categories, :id, :name %>
Params being submitted (example) Parameters: {“commit”=>“Create”, “canindustry”=>{“category_id”=>[“2”,
“3”, “4”, “5”]},
The fields in the canindustry model are: id | candidate_id | category_id I want to insert multiple rows , so using above parameters
id | candidate_id | category_id | 1 11 2 2 11 3 3 11 4
4 11 5
Problem is in my controller where i"ve tried a few different ways with no success: Right now I have this in the create action:
@canindustry.candidate_id = current_user.id
I assume you set @canindustry somewhere to a proper object, but the error stated otherwise.
Yeah , it was set up as a proper object though I was getting all sorts of errors.
a = (params[:canindustry]) a.each {|x| a.canindustry.save}
Here I think params[:canindustry][:category_id] will give you the array of selected category ids. Each ‘a’ element is a String, which dnu #canindustry let alone #save.
Seems to me you need something like the following in your a.each block.
canindustry = Foo.new canindustry.candidate_id = current_user.id canindustry.category_id = x canindustry.save
Yep , it works ! Thank you!
a = (params[:canindustry][:category_id])
a.each {|x|
canindustry = Canindustry.new
canindustry.candidate_id = current_user.id
canindustry.category_id = x
canindustry.save }
Let this thread serve as a warning jumping to fast into Rails without having Ruby array methods burned deeply in your brain.
Stuart