CODEWITHSUNDEEP
ruby-on-railsactiverecordsimple-form
John
John

Reputation: 634

How to pass an id to a different view

I have a has_many :through relationship, and the fallowing scenario: A user is able to create an project and add many words to that project. The 'words' will be stored just once in the database, and if they already exist in the join table an association will be created.

What I have so far:

A project controller which is adding the project into the table and redirects to a show page, where is another simple_form_for in where all the words will go.

def show
 @word = word.new
end

Project show View 

<%= simple_form_for @word do |f|%>
    <%=f.input :name%>
    <%=f.button :submit%>
<%end%>

In the word controller create action I would like to get the project id and populate the join table and the words table.

@project = Project.find(params[:id])

So how can I get the project_id and populate the join table and use find_or_create_by populate the words table.

(I know that the project_id can be found in the URL, also I can print it by using @project.id) in the view

Thank you

Upvotes: 1

Views: 127

Answers (2)

Nikita Singh
Nikita Singh

Reputation: 370

If I am getting the question right, you want to create a has_and_belongs_to_many relationship between project and word. so in your Project.rb add

has_and_belongs_to_many :words

and in your Word.rb add

has_and_belongs_to_many :projects

Now for this relationship create a new table projects_words with two fields 'project_id' and 'word_id'

In project controller inside show action

@words = Word.new

In show page of project add this:-

<%= form_for @word,:url => words_path(:project_id => @project.id) do |f|%>
  <%=f.label :name%>
  <%=f.text_field :name%>
  <%=f.button :submit%>
<%end%>

Now in the word controller create action do like this:-

@word = Word.find_or_create_by_name(params[:word][:name])
@word.projects = Project.where(:id => params[:project_id])
@word.save

Upvotes: 2

Srikanth Jeeva
Srikanth Jeeva

Reputation: 3011

I think you can pass Project ID in the URL like this,

Projects Controller:

def show
  @project = Project.find(params[:id])
end

projects/show.html.erb

<%= simple_form_for @word, :url => words_path(:project_id=> @project.id), :method => :post do |f| %>
  <%=f.input :name%>
  <%=f.button :submit%>
<%end%>

Sorry if this didn't work, I haven't tested this.

Upvotes: 0

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