I want to pass a variable value from controller to view as shown below
controller (.rb)
redirect_to root_url, :some_var => 'true or false'
view (root_url.html.erb)
<% if :some_var %>
#do something
<% else %>
#do something else.
can anyone provide me an idea. Thanks in advance.
Then just pass that variable as query string
redirect_to root_url(foo: 'bar')
This will produce url like
example.com?foo=bar
Another way is to use flash object
redirect_to root_url, notice: "This is some info to convey"
Flash to convey temp variable:
flash[:foo] = 'bar'
redirect_to root_url
# View
<% if flash[:foo] %>
<%= "This is #{flash[:foo]} value" %>
flash has benefit that it got removed in next request. However, please still be aware of this pattern and not abuse session/flash :)the best way to do this is to render, not redirect, since you're not quite finishing the whole action. then just use instance variables in the controller action:
@some_var = true or false
render root_url
root:
if @some_var
do blah
