I'm trying to figure out how to make an app with Rails 4. I keep getting stuck on basic things and I don't seem to be able to identify principles to use going forward.
I have a profile model and a industry model. The associations are:
Profile:
has_and_belongs_to_many :industries, join_table: 'industries_profiles'
Industry:
has_and_belongs_to_many :profiles, join_table: 'industries_profiles'
In my profile show page, I'm now trying to link to the industry page:
<% @profile.industries.limit(5).each do |industry| %>
<%= link_to industry.sector.upcase, industry_path(@industry) %>
<% end %>
I can't find anything that works for this link.
I have tried the following:
industry_path(@profile.industry)
industry_path(@profile.industry_id)
industry_path(industry)
industry_path(profile.industry)
industry_path(industry.id)
industry_path(industry_id)
But all of them are guesses. I don't know how to ready the API dock so I can't understand any of its content.
Can anyone see how to link to a show page of the other side of the HABTM association for a single record?
You can grab a list of your routes by running rake routes | grep industry in your command line, which will give you a table with the prefix, action, and uri pattern. For example:
industries GET /industries(.:format) industries#index
POST /industries(.:format) industries#create
new_industry GET /industries/new(.:format) industries#new
edit_industry GET /industries/:id/edit(.:format) industries#edit
industry GET /industries/:id(.:format) industries#show
PATCH /industries/:id(.:format) industries#update
PUT /industries/:id(.:format) industries#update
DELETE /industries/:id(.:format) industries#destroy
In your case, you should look at the show path. Which is industry and you append _path to the end of whatever your prefix is above, which comes out to be industry_path. And since you have declared your variable industry when defining your loop, you can use that instead of the instance variable.
Short answer: industry_path(industry)