ruby on rails - Couldn't find Wiki without an ID error? -

i making wiki clone app in ruby on rails , trying destroy wiki, after click on destroy link error:

couldn't find wiki without id

and has problems code block

def destroy @wikis = wiki.all @wiki = wiki.find(params[:wiki_id]) @collaborator = @wiki.users.find(params[:user_id]) authorize @wiki end

where call delete function in wiki#views file. link looks this:

<%= link_to "delete wiki", @wiki, method: :delete, class: 'btn btn-danger', data: { confirm: 'are sure want delete wiki?' } %>

this error caused following line:

@wiki = wiki.find(params[:wiki_id])

params[:wiki_id] nil. you're doing this:

@wiki = wiki.find(nil)

in case find throw error you're seeing, since cannot find records id of nil.

as per tadman's suggestion, try changing line following:

@wiki = wiki.find(params[:id])

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