我有一个带有以下 Post
的 Rails 4 应用程序型号:
create_table "posts", force: :cascade do |t|
t.integer "calendar_id"
t.date "date"
t.time "time"
t.string "subject"
t.string "format"
t.text "copy"
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
t.string "image_file_name"
t.string "image_content_type"
t.integer "image_file_size"
t.datetime "image_updated_at"
t.string "short_copy"
t.integer "score"
t.boolean "facebook"
t.boolean "twitter"
t.boolean "instagram"
t.boolean "pinterest"
t.boolean "google"
t.boolean "linkedin"
t.boolean "tumblr"
t.boolean "snapchat"
t.string "approval"
end
必须允许用户决定是否post.facebook
是true
或 false
,这就是为什么 :facebook
的原因是 boolean
.
然后,我创建了以下表格以允许用户实际制作 post.facebook
true
或 false
:
<%= form_for [@calendar, @calendar.posts.build], html: { multipart: true } do |f| %>
<% if @post.errors.any? %>
<div id="error_explanation">
<h2><%= pluralize(@post.errors.count, "error") %> prohibited this post from being saved:</h2>
<ul>
<% @post.errors.full_messages.each do |message| %>
<li><%= message %></li>
<% end %>
</ul>
</div>
<% end %>
<hr>
<div class="field">
<h3>Post details</h3>
<p>
<%= f.label :date %>
<%= f.date_select :date %>
</p>
<p>
<%= f.label :time %>
<%= f.time_select :time %>
</p>
<p>
<%= f.label :format %>
<%= f.select :format, ['Simple Status', 'Image', 'Link', 'Video'] %>
</p>
<hr>
<h3>Post content</h3>
<p>
<%= f.label :subject %>
<%= f.text_field :subject %>
</p>
<p>
<%= f.label :copy %>
<%= f.text_area :copy %>
</p>
<p>
<%= f.label :short_copy, "Short copy (Twitter only)" %>
<%= f.text_area :short_copy %>
</p>
<hr>
<h3>Social channels</h3>
<p>
<%= f.label_tag(:facebook, "Facebook" )%>
<%= f.check_box_tag(:facebook) %>
</p>
<p>
<%= f.label_tag(:twitter, "Twitter") %>
<%= f.check_box_tag(:twitter) %>
</p>
<p>
<%= f.label_tag(:instagram, "Instagram") %>
<%= f.check_box_tag(:instagram) %>
</p>
<p>
<%= f.label_tag(:pinterest, "Pinterest") %>
<%= f.check_box_tag(:pinterest) %>
</p>
<p>
<%= f.label_tag(:google, "Google+") %>
<%= f.check_box_tag(:google) %>
</p>
<p>
<%= f.label_tag(:linkedin, "LinkedIn") %>
<%= f.check_box_tag(:linkedin) %>
</p>
<p>
<%= f.label_tag(:tumblr, "Tumblr") %>
<%= check_box_tag(:tumblr) %>
</p>
<p>
<%= f.label_tag(:snapchat, "Snapchat") %>
<%= f.check_box_tag(:snapchat) %>
</p>
<hr>
<h3>Image</h3>
<p>
<%= f.label :image %><br>
<%= f.file_field :image %>
</p>
</div>
<hr>
<div class="actions">
<%= f.submit %>
</div>
<% end %>
而且我确实清理了我的 posts_controller.rb
中的所有参数:
def post_params
params.require(:post).permit(:date, :time, :subject, :format, :copy, :image, :short_copy, :score, :facebook, :twitter, :instagram, :pinterest, :google, :linkedin, :tumblr, :snapchat, :approval)
end
问题是,每当我尝试 create
新帖子或edit
现有帖子,并检查 :facebook
复选框,然后保存帖子,值仍然设置为 nil
.
——————
更新:这是我尝试更新帖子时的服务器日志:
Started PATCH "/posts/2" for ::1 at 2015-10-16 11:13:38 -0700
Processing by PostsController#update as HTML
Parameters: {"utf8"=>"✓", "authenticity_token"=>"gqhmCHecVEJdqvOE18HQTEVk+jlcJ9pBi1hYJ+7GQuXHUW2VbDyZggDlCx9uKddI+iCXkd1yhrW9RWZXv4/oUw==", "post"=>{"date(1i)"=>"2015", "date(2i)"=>"9", "date(3i)"=>"22", "time(1i)"=>"2000", "time(2i)"=>"1", "time(3i)"=>"1", "time(4i)"=>"08", "time(5i)"=>"15", "format"=>"Image", "subject"=>"Yet another image test.", "copy"=>"What about it this time?", "short_copy"=>""}, "facebook"=>"1", "commit"=>"Update Post", "id"=>"2"}
Post Load (0.1ms) SELECT "posts".* FROM "posts" WHERE "posts"."id" = ? LIMIT 1 [["id", 2]]
(0.1ms) begin transaction
(0.1ms) commit transaction
Redirected to http://localhost:3000/calendars/3
Completed 302 Found in 7ms (ActiveRecord: 0.3ms)
从那里,我会说 "facebook"=>"1"
并且帖子已保存,但是当我转到 rails console
时在终端,我仍然得到 "facebook"=>nil
.
——————
更新 2:这是我使用 <%= check_box_tag(["post"]["facebook"]) %>
时的新服务器日志:
Started PATCH "/posts/2" for ::1 at 2015-10-16 11:24:07 -0700
Processing by PostsController#update as HTML
Parameters: {"utf8"=>"✓", "authenticity_token"=>"ByX04ciySTvKglgJGdTGsXSIOou443o02FfPJqNSn6BC3P980xKE+5fNoJKgPMG1y8xXIzm2JsDuSvFW8hs1Fg==", "post"=>{"date(1i)"=>"2015", "date(2i)"=>"9", "date(3i)"=>"22", "time(1i)"=>"2000", "time(2i)"=>"1", "time(3i)"=>"1", "time(4i)"=>"08", "time(5i)"=>"15", "format"=>"Image", "subject"=>"Yet another image test.", "copy"=>"What about it this time?", "short_copy"=>""}, "facebook"=>"1", "commit"=>"Update Post", "id"=>"2"}
Post Load (0.1ms) SELECT "posts".* FROM "posts" WHERE "posts"."id" = ? LIMIT 1 [["id", 2]]
(0.1ms) begin transaction
(0.1ms) commit transaction
Redirected to http://localhost:3000/calendars/3
Completed 302 Found in 5ms (ActiveRecord: 0.3ms)
——————
更新 3:这里(再次)是我使用 <%= check_box_tag("post[facebook]") %>
时的一些新服务器日志:
Started PATCH "/posts/2" for ::1 at 2015-10-16 11:31:25 -0700
Processing by PostsController#update as HTML
Parameters: {"utf8"=>"✓", "authenticity_token"=>"vOBGP+yXhCd9GpIbOx6+UqZCptsQcBKvfX5MM2sgvHz5GU2i9zdJ5yBVaoCC9rlWGQbLc5ElTltLY3JDOmkWyg==", "post"=>{"date(1i)"=>"2015", "date(2i)"=>"9", "date(3i)"=>"22", "time(1i)"=>"2000", "time(2i)"=>"1", "time(3i)"=>"1", "time(4i)"=>"08", "time(5i)"=>"15", "format"=>"Image", "subject"=>"Yet another image test.", "copy"=>"What about it this time?", "short_copy"=>""}, "facebook"=>"1", "commit"=>"Update Post", "id"=>"2"}
Post Load (0.2ms) SELECT "posts".* FROM "posts" WHERE "posts"."id" = ? LIMIT 1 [["id", 2]]
(0.2ms) begin transaction
(0.1ms) commit transaction
Redirected to http://localhost:3000/calendars/3
Completed 302 Found in 6ms (ActiveRecord: 0.5ms)
——————
更新 4:还有一些服务器日志,当我使用 <%= f.checkbox :facebook %>
时:
Started PATCH "/posts/2" for ::1 at 2015-10-16 11:35:32 -0700
Processing by PostsController#update as HTML
Parameters: {"utf8"=>"✓", "authenticity_token"=>"kl0vM/bXVM+0m9z4JD4g/HcVA5YY4NYOfGnd/YP7kjjXpCSu7XeZD+nUJGOd1if4yFFuPpm1ivpKdOON0rI4jg==", "post"=>{"date(1i)"=>"2015", "date(2i)"=>"9", "date(3i)"=>"22", "time(1i)"=>"2000", "time(2i)"=>"1", "time(3i)"=>"1", "time(4i)"=>"08", "time(5i)"=>"15", "format"=>"Image", "subject"=>"Yet another image test.", "copy"=>"What about it this time?", "short_copy"=>""}, "facebook"=>"1", "commit"=>"Update Post", "id"=>"2"}
Post Load (0.2ms) SELECT "posts".* FROM "posts" WHERE "posts"."id" = ? LIMIT 1 [["id", 2]]
(0.2ms) begin transaction
(0.1ms) commit transaction
Redirected to http://localhost:3000/calendars/3
Completed 302 Found in 9ms (ActiveRecord: 0.4ms)
——————
如何获得以下行为:
- 默认值
post.facebook
=>false
:facebook
的默认状态复选框 =>unchecked
post.facebook
的值当:facebook
复选框已选中 =>true
:facebook
的状态:facebook
时的复选框复选框已选中 =>checked
我发现了以下 Stack Overflow 问题,但无法从那里找到解决我的问题的方法:
- Ruby on Rails - Checkbox not saving to database?
- Rails Checkbox not working - no error when submitting form
- Get checkbox to render as checked if boolean value is false
这似乎是一个基本要求/问题,我相信我遵循了 Rails 文档,但我无法弄明白。
知道我遗漏了什么/做错了什么吗?
最佳答案
您的 facebook 属性不在 post 参数内。
你必须做的改变:
<%= form_for [@calendar, @post], html: { multipart: true } do |f| %>
和
<%= f.check_box :facebook, checked: true %>
关于ruby-on-rails - Rails 4 形式 : checkbox not saving value to database,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/33176924/