所以我有这个数据库,用户可以借书。我们有书籍,用户和借阅的人。
可以在此处找到代码:https://gist.github.com/Veske/8490542
我想知道,我怎样才能这样做,以便我在借阅视图中显示所有书籍,然后还可以为我自己或其他用户选择借书?
如果我试图在借用控制器中为视图创建一个book实例变量,那么地狱就会松动。所以我现在真的不知道......
编辑:视图中的@book不再需要了,因为它不起作用,我之前在控制器中有一个动作。
这是我的控制者:
class BurrowsController < ApplicationController
before_action :signed_in_user, only: [:index,:edit,:update, :destroy]
before_action :admin_user, only: :destroy
def index
@burrow = current_user.burrows.build
@burrows = Burrow.all
end
def show
@burrow = Burrow.find(params[:id])
end
def new
@burrow = current_user.burrows.build
end
def create
@burrow = current_user.burrows.build(burrow_params)
if @burrow.save
flash[:success] = "Burrowing a book was successful!"
redirect_to @burrow
else
render current_user
end
end
# Private section, makes the page unable to be seen for non logged in users
private
def burrow_params
params.require(:burrow).permit(:user_id, :book_id)
end
def admin_user
redirect_to(root_url) unless current_user.admin?
end
# Redirecting not logged in user etc.
def signed_in_user
unless signed_in?
store_location
redirect_to '/sessions/new', notice: "Please sign in!"
end
end
end
这是我创建新借入条目的观点:
<% provide(:title, "Burrow a book") %>
<b align="center">Choose the name of a book you want to burrow and enter 'Submit!'</b>
<%= form_for(@burrow) do |f| %>
<div class="forms">
<%= f.text_field :book_id, placeholder: "Type in the name of the book...", autofocus: true %>
<%= f.submit 'Submit!' %>
</div>
<% end %>
目前观点不好,我现在一直在试验绝对的一切,我只是不明白需要做些什么。
借入索引:
<% provide(:title, 'All burrowers') %>
<h2 align="center">All borrowers</h2><
<table align="center">
<tr>
<td align="left"><b>Who borrowed</b></td>
<td align="left"><b>Borrowed what</b></td>
<% if current_user.admin? && !current_user?(@user) %>
<td align="left"><b>Admin functions</b></td>
<% end %>
</tr>
<% @burrows.each do |burrow| %>
<tr>
<td align="left"><%= link_to burrow.user.name, burrow.user %></td>
<td align="left"><%= link_to burrow.book.name, burrow.book %></td>
<% if current_user.admin? && !current_user?(@user) %>
<td>
<%= link_to "Delete this user", burrow, method: :delete, data: { confirm: "You sure?" } %>
</td>
<% end %>
</tr>
<% end %>
</table>
答案 0 :(得分:1)
一种可能的解决方案是使用这样的select_tag
列表:
<%= form_for(@burrow) do |f| %>
<div class="forms">
<%= f.select("book_id", Book.all.collect {|b| [ b.name, b.id ] }, { include_blank: true }) %>
<%= f.submit 'Submit!' %>
</div>
<% end %>
那是你在找什么?
顺便说一句 - 我认为你的意思是“借”而不是“挖洞”