bugfix: f.text_field does not display array
#697
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When the default value of a parameter is an array, the default value is not properly displayed by `f.text_field` method. We explicitly call `to_s` and set it to the value of the form.
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fixed #696 Thanks @noda50
When the default value of an object parameter is an array (such as
[1,2,3]), the default value is not properly displayed in the form.This is because
text_fieldmethod changes its behavior when the object is an array. We explicitly callto_jsonand set it to the value of the form to avoid this issue.https://apidock.com/rails/ActionView/Helpers/FormHelper/text_field