[Action View :: Missing Template] I didn't understand the meaning of the error statement, so I looked it up.

Read the error statement

ActionView::MissingTemplate in Users#index
Showing /home/vagrant/work/bk2-before_debug/app/views/users/index.html.erb where line #5 raised:

Missing partial users/_newform, application/_newform with {:locale=>[:en], :formats=>[:html, :text, :js, :css, :ics, :csv, :vcf, :vtt, :png, :jpeg, :gif, :bmp, :tiff, :svg, :mpeg, :mp3, :ogg, :m4a, :webm, :mp4, :otf, :ttf, :woff, :woff2, :xml, :rss, :atom, :yaml, :multipart_form, :url_encoded_form, :json, :pdf, :zip, :gzip], :variants=>[], :handlers=>[:raw, :erb, :html, :builder, :ruby, :coffee, :jbuilder]}. Searched in:
  * "/home/vagrant/work/bk2-before_debug/app/views"
  * "/home/vagrant/.rbenv/versions/2.5.7/lib/ruby/gems/2.5.0/gems/devise-4.7.2/app/views"
Extracted source (around line #5):

3　<h2>New book</h2>
4　<%= render 'newform', book: @book %>
5
6
7　<h2>Users</h2>
8

This error itself has been resolved as follows.

The views / users / index.html.erb indicated by the error I wanted to quote views / books / _newform.

Resolved by changing render "newform" to render "books / newform".

ActionView::MissingTemplate in Users#index => There seems to be a problem with the index action in the Users controller.

Missing partial users/_newform, application/_newform => _newform is a common template Missing Templete doesn't load the common template well (?)

{:locale=>[:en], => The locale seems to be a file that is "used to manage the wording that is used frequently". It seems that it stores templates such as date and time formats and error statements.

I found it when I looked for it /config/locale By the way, the error statement of devise was also in this.

Does this mean that you are referring to locale / en?

▼ Reference locale https://qiita.com/d0ne1s/items/89846ebe97c9114865ca

:formats=>[:html, :text, :js, :css, :ics, :csv, :vcf, :vtt, :png, :jpeg, :gif, :bmp, :tiff, :svg, :mpeg, :mp3, :ogg, :m4a, :webm, :mp4, :otf, :ttf, :woff, :woff2, :xml, :rss, :atom, :yaml, :multipart_form, :url_encoded_form, :json, :pdf, :zip, :gzip] => Is it a supported format for reading?

:variants=>[] => variants are like one of the Action Packs, and they seem to define something to generate a view-related file that makes it convenient when browsing a page on a different device (appropriate ...). ▼ Reference Variants https://www.techscore.com/blog/2014/03/13/rails-4-1-0-actionpack-variants/

Also, ActionPack seems to be a package that works well with MVC view and controller implemented in Rails. The definition of creating a controller with $ rails g controller on terminal is It seems to be defined in this Action Pack. (It will take time to chase deeply, so this time I will limit myself to this level of understanding. Please point out if your understanding is incorrect!) ▼ Reference Action Pack https://qiita.com/toda-axiaworks/items/19be2ac4eff13c46dca9

In this case, variants are not particularly relevant, so is it blank? I do not understand…

:handlers=>[:raw, :erb, :html, :builder, :ruby, :coffee, :jbuilder] => It is a program that does not start in a normal system, but starts when a certain event occurs. ▼ Reference (About the handler http://mh.rgr.jp/memo/mg0038.htm#:~:text=%EF%BC%9E%20%E3%83%97%E3%83%AD%E3%82%B0%E3%83%A9%E3%83%9F%E3%83%B3%E3%82%B0%E8%A8%80%E8%AA%9E-,%E3%83%8F%E3%83%B3%E3%83%89%E3%83%A9%20%EF%BC%88handler%EF%BC%89,%E3%81%AF%E5%BE%85%E6%A9%9F%E3%81%97%E3%81%A6%E3%81%84%E3%82%8B%E3%80%82&text=%E5%89%B2%E3%82%8A%E8%BE%BC%E3%81%BF%E3%83%8F%E3%83%B3%E3%83%89%E3%83%A9%EF%BC%88interrupt%20handler%EF%BC%89%E3%81%A8,%E5%BE%85%E6%A9%9F%E3%81%97%E3%81%A6%E3%81%84%E3%82%8B%E3%83%97%E3%83%AD%E3%82%B0%E3%83%A9%E3%83%A0%E3%80%82

In this case ... I don't know ...

Searched in:

• "/home/vagrant/work/bk2-before_debug/app/views"
• "/home/vagrant/.rbenv/versions/2.5.7/lib/ruby/gems/2.5.0/gems/devise-4.7.2/app/views" => It means that I searched for the view I made and the view made with devise (?) Wow ... or ... Ran ... (Bat

Impressions

Keywords that clearly exist as files can be considered, The system name? Is just an imagination. ..

I will add it as soon as I understand it.

Please comment if you have a supplement m (_ _) m