How TO Get the email when we seleted the person name - ruby-on-rails

Question

I need an employee email-id when I'm selecting his name, if his email id is exist in database. Can any one suggest me how to do, since I have 1400 employees and their mail id, I'm getting their names in dropdown but when I'm selecting their names I need their mail id to display in the particular field......
$("#user_employee_id").change(function(){
$.ajax({
type: "GET",
url: "/User/emailcheck",
data: { email: user.email }
});
});
user_controller.rb
def emailcheck
#user = User.search(params[:email])
end
user.rb
def self.search(email)
if email
where('email = ?',email).first
end
end
Can any one tell how to get the email id when I click on the employee name? I need to get email id of that employee by default in email tab.

Answer 1

Try this:
$("#user_employee_id").change(function(){
var id = $(this).val();
$.ajax({
type: "GET",
url: "/User/emailcheck",
data: { id : id}
success : function( data ) {
$("#user_email").val(data);
},
error : function(err) {
}
});
});
user_controller.rb
def emailcheck
#user = User.find_by_id(params[:id])
respond_to do |format|
if #user.email.present?
format.json { render json: #user.email , status: :ok }
else
format.json { render json: "No mail id", status: :unprocessable_entity }
end
end
end

Answer 2

You can do this like
Chenge your js Code like:
$("#user_employee_id").change(function(){
var user_id = $(this).val(); #considering that your are setting id as a value of select field
$.ajax({
type: "GET",
url: "/user/emailcheck",
data: { id: user_id }
}).success(function(res){
$("#your_text_field_id").val(res.text);
});
});
and in your user_controller.rb
def emailcheck
user = User.find_by(id: params[:id])
if user.present?
render text: user.email
end
end