adding a class to a text_field_tag

Question

I am trying to give a class to my text_field_tag

I have this

<%= text_field_tag :login_aei, class: 'form-control' %>

but it keeps generating this :

<input type="text" name="login_aei" id="login_aei" value="{:class=>&quot;form-control&quot;}">

What am I doing wrong ?

please check following link.may be it will help http://stackoverflow.com/questions/29198495/add-custom-class-to-form-fields — nimTas, Aug 31 '15 at 19:19

Arup Rakshit · Accepted Answer · 2015-08-31T19:14:46.970

66

You declared it wrong. Here is the one will work.

<%= text_field_tag :login_aei, "", class: 'form-control' %>

I gave the value of the input field as empty string, but you can give any value what meets your business needs.

edited Aug 31 '15 at 19:14

answered Aug 31 '15 at 19:13

Arup Rakshit

score 1 · Answer 2 · answered Jun 30 '18 at 16:29

1

In the case of data binding is needed,

<%= text_field_tag(:personName,"#{@person.name}", class:'form-control', placeholder: 'User Name' )%>

answered Jun 30 '18 at 16:29

zawhtut

score 0 · Answer 3 · answered Oct 21 '18 at 17:25

text_field_tag is an ActionView method. First thing to do is check the documentation. It says, text_field_tag takes this form:

text_field_tag(name, value = nil, options = {})

Additionally:

value is the initial value for the text box. Notice the default is nil, not an empty string. By passing in a string, you are using it in an undocumented way, which may have worked in this instance but could behave subtly different.
name is a string. While Rails currently converts a symbols into strings here, consider using a string instead of a symbol for better future-proofing.
The two issues above were overlooked by skipping straight to SO for the quick answer. Consider RTFM as it is the only definitive source, besides the source code itself.

3 Answers3