Rails - Unable to access Instance variables in views

Question

Controller:

def store
  if params[:name].present? && params[:pass].present? && params[:cpass].present? && params[:role].present?
    @name = params[:name].downcase

    if CheckEmpName(@name) == 0     
      render "userexist"
      return
    end

    pass = params[:pass]
    cpass = params[:cpass]

    if pass != cpass                
      render "passerror"
      return
    end

    role = params[:role]

    @user = Employee.new(name: @name, password: pass, role: role)
    @user.save

  end
  render "success"
end

The above action renders the "success.html.erb" page when all the user inputs are valid. Instead if the username is already registered or both the password and confirm password are not matched then it renders the appropriate error files which is "userexist.html.erb" or "passerror.html.erb".

Problem:

I am able to access @name instance variable in success.html.erb file. But I am not able to access that in both of the error html files. Why it is only accessible in "success" and not in "userexist" and "passerror". Why it is not accessible. And What I need to do to access those variable in both of the error handling html pages ?

You shuld be using render 3 times, you should render only one and pass flash[:error] to them, or use partials. Even rails shows an error when you use render or redirect many times in a single method. — Jorge de los Santos
– Jorge de los Santos, Commented Sep 14, 2016 at 8:53
"I am not able to access that in both of the error html files" Where is this happening? I don't see where userexist or passerror are being rendered. — Tom Lord
– Tom Lord, Commented Sep 14, 2016 at 8:58
@SergioTulentsev. Thanks. I done my mistakes in my views. Instead of specifying "@name", I specified "@user". That is the mistake. — mohangraj
– mohangraj, Commented Sep 14, 2016 at 9:02
@JorgedelosSantos: this code will not produce "double render" error. — Sergio Tulentsev
– Sergio Tulentsev, Commented Sep 14, 2016 at 9:06

Aleksei Matiushkin · Accepted Answer · 2016-09-14 08:50:42Z

1

You may explicitly pass whatever you want to access as locals hash parameter to call to render:

render "userexist", locals: { name: @name }

Now name will be passed through to underlying template.

answered Sep 14, 2016 at 8:50

Aleksei Matiushkin

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2 Comments

mohangraj Over a year ago

Is it possible to send local variable instead of instance variable ?

Aleksei Matiushkin Over a year ago

Sure, the hash will be passed through as is, think about it as about plain ruby. One might put there whatever.

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