How to use parameters from the Url to use it in controller method?

Question

Controller method

def status
  @st = params[:st_type].to_i
  @user_id = params[:user_id]
  @post_id = params[:pt_id]
  @a = Apply.find_by_user_id_and_post_id(@user_id, @post_id)
  @a.update_attributes(status: @st)
  flash[:success] = "Welcome to the Sample App!"
end

Link doesn't passes the post_id parameter-:

Link from the views

<%= link_to "Shortlist", status_applies_path(:user_id => @user.id, :pt_id => @post_id, :st_type => 1) %>

I am trying to get user_id and post_id from the from the url and pass it to my controller method 'def status'. Where it process the user_id and post_id to find the Apply id which further updates the attribute. The problem is I am able to fetch only user_id and not the post_id.

you are not getting Apply or not getting ` @post_id = params[:pt_id]` — Deepak Mahakale
– Deepak Mahakale, Commented Sep 14, 2016 at 9:27

aledustet · Accepted Answer · 2016-09-14 13:37:06Z

1

The thing is that if a value in the URL helper is nil, it gets omitted

$ rails c
app.jedis_path(listing: 1)
=> "/jedis?listing=1"
app.jedis_path(listing: nil)
=> "/jedis"

So your syntax is correct, but if the param gets to the helper URL method as nil, it is not displayed in the URL per se

answered Sep 14, 2016 at 13:37

aledustet

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Comments

Bartłomiej Gładys · Accepted Answer · 2016-09-14 09:25:28Z

0

use where and first

Apply.where(something_attr: @user_id, other_attr: @post_id).first

answered Sep 14, 2016 at 9:25

Bartłomiej Gładys

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1 Comment

Tanuj Over a year ago

I will change that but the link is not passing the pt_id parameter to the controller.

Deepak Mahakale · Accepted Answer · 2016-09-14 09:32:12Z

0

Its silly typo

You are passing params as :post_id and fetching it as params[:pt_id] change it to:

@post_id = params[:post_id]

edited Sep 14, 2016 at 9:32

answered Sep 14, 2016 at 9:25

Deepak Mahakale

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7 Comments

Tanuj Over a year ago

I was trying many things as it was not working, even :pt_id isnt working, as it is not passing the parameter. I have updated my question and attached the screenshot of the url that is being called.

Deepak Mahakale Over a year ago

make sure there is some value in @post_id

Tanuj Over a year ago

In the url it shows 'post_id=1', is there any other way to fix this?

Deepak Mahakale Over a year ago

then in your controller change @post_id = params[:post_id]

Tanuj Over a year ago

That won't help as the link_to is not sending the post_id parameter.

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