I have a controller with an action that is being hit remotely, after which my controller_action.js.erb file is run.
Within my controller's action, I am setting a variable @successful = true|false (true|false based on the return value of a function).
Within my javascript file, I want to say if @successful and either alert that the action was successful or alert that it was not.
Any idea how to do this?
try this
<%- if @successful %>
alert('Blabla');
<%- else %>
alert('Blabal');
<%- end %>
<%- differ from <%= in any significant way? I have never seen the former before.
<%- doesn't render any output, while <%= does.<% is that synonymous with <%-?<%- and -%> are like <% and %>, but also suppress leading and trailing whitespace. See: api.rubyonrails.org/classes/ActionView/Base.htmlI speak HAML usually, so this might not be exactly correct:
if(<%= @successful %>) {
// do stuff
} else {
// do other stuff
}
In HAML, it would be:
:javascript
if(#{@successful}) {
// do stuff
} else {
// do other stuff
}
Alternatively, you could do this:
(ERB)
<%- if @successful %>
// JS code if true
<%- else %>
// JS code if false
<%- end %>
(HAML)
- if @successful
:javascript
// JS code if true
- else
:javascript
// JS code if false
The first option will always render all your JS code on the client side, the only difference being if true or false is in the if clause.
The second option will conditionally only render the JS code for the true or false case.
