Sinatra HTTP“PUT”;方法
此处的 PUT 操作出现问题,表单得到处理,但更新的字段未保存。
我已经做了 Sinatra 用户正在做的事情,通过添加“_method”让 Sinatra 识别出这是一个 HTTP PUT 操作。有人能发现这里有什么错误吗?
# edit
get '/entries/*/:id/edit' do
@entry = Entries.get(params[:id])
@title = "edit"
erb :edit, :layout => :edit_layout
end
# update
put '/entries/:id' do
@entry = Entries.get(params[:id])
if @entry.save
redirect "/entries/id=#{@entry.id}"
else
redirect "/enewsletters"
end
end
<!-- Edit form -->
<form action="/enewsletters/edit/<%= @entry.id %>" method="post">
<input name="_method" value="put" type="hidden"/>
<p>
<label>Content</label><br/>
<input type="text" name="entry[title]" value="<%= @enew.title %>">
</p>
<p>
<input type="submit" name="commit" value="update">
</p>
</form>
Something's wrong with the PUT action here, the form gets processed but the updated field is not being saved.
I've did what Sinatra users are doing, by adding in "_method" for Sinatra to recognise that's its a HTTP PUT action. Could anyone spot any mistake here?
# edit
get '/entries/*/:id/edit' do
@entry = Entries.get(params[:id])
@title = "edit"
erb :edit, :layout => :edit_layout
end
# update
put '/entries/:id' do
@entry = Entries.get(params[:id])
if @entry.save
redirect "/entries/id=#{@entry.id}"
else
redirect "/enewsletters"
end
end
<!-- Edit form -->
<form action="/enewsletters/edit/<%= @entry.id %>" method="post">
<input name="_method" value="put" type="hidden"/>
<p>
<label>Content</label><br/>
<input type="text" name="entry[title]" value="<%= @enew.title %>">
</p>
<p>
<input type="submit" name="commit" value="update">
</p>
</form>
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您似乎没有对
@entry
进行任何更新,您只是从 params 中获取具有 id 的特定条目。您使用 ActiveRecord 吗?如果是这样,请尝试使用@entry.update_attributes(params[:entry])
,而不是@entry.save
。编辑:我猜你没有使用 AR,因为我刚刚注意到
.get
调用。无论您使用什么 ORM,都必须有一种简单的方法来更新属性,然后保存记录。You don't seem to be doing any update to the
@entry
, you're just fetching the specific entry with the id from params. Are you using ActiveRecord? If so, instead of@entry.save
, try@entry.update_attributes(params[:entry])
.Edit: I'm guessing you're not using AR since I just noticed the
.get
call. Whatever ORM you are using must have an easy way to update the attributes and then save the record.