现在在app/views/microposts/home.html.erb中,我有..
<% form_tag purchases_path, :method => 'get', :id => "products_search" do %>
<p>
<%= text_field_tag :search, params[:search] %>
<%= submit_tag "Search", :name => nil %>
</p>
<% end %>
<% form_tag sales_path, :method => 'get', :id => "sales_search" do %>
<p>
<%= text_field_tag :search, params[:search] %>
<%= submit_tag "Search", :name => nil %>
</p>
<% end %>
然后在微邮局中,我有
scope :purchases, where(:kind => "purchase")
scope :sales, where(:kind => "sale")
def self.search(search)
if search
where('name LIKE ?', "%#{search}%")
else
scoped
end
end
然后最后在 microposts_controller.rb 中我有
def home
@microposts=Micropost.all
@purchases=@microposts.collect{ |m| m if m.kind == "purchase"}.compact
@sales=@microposts.collect{ |m| m if m.kind == "sale"}.compact
end
编辑:
我也尝试使用
def home
@microposts=Micropost.all
@purchases=@microposts.purchases
@sales=@microposts.sales
end
相反,但它给了我错误未定义的方法"购买"#
安威,
现在使用 .collect 方法,我收到一个错误,说未定义的局部变量或方法"purchases_path",它对sales_path也是如此。
我想要的是有两个搜索表单。在我的微帖子表中,我有一个名为 kind 的列,可以是"购买"或"销售"。如何更改我的代码,以便一个搜索表单仅搜索并显示那些具有"购买"类型的微帖子的结果。然后另一个搜索并显示那些带有"sale"
def home
@microposts = Micropost.all
@purchases = Micropost.search("purchase", params[:search])
@sales = Micropost.search("sale", params[:search])
end
def self.search(kind = nil, search = nil)
results = self.where(:kind => kind) if kind
results = self.where('name LIKE ?', "%#{search}%") if name
end
'/microposts/home'如果映射到MictropostsController#homeapp/views/microposts/home.html.erb
<%= form_tag('/microposts/home', :method => :get) do
<%= text_field_tag 'kind'%>
<%= submit_tag 'Search' %>
%>
/app/controllers/microposts_controller.rb
def home
kind = params[:kind]
if kind.present?
# if search parameter passed
@microposts = Micropost.where(:kind => kind)
else
# if search parameter not passed, list all micro post
@microposts = Micropost.all
end
end
好的,所以你有一个sales_path和一个purchases_path,所以我假设它们都会导致一个具有销售和购买操作的控制器
def sales
@search = params[:search]
@microposts = Micropost.search(@search).sales
end
def purchases
@search = params[:search]
@microposts = Micropost.search(@search).purchases
end
Micropost.search
方法将返回一个作用域。因此,我们将在该作用域上调用 #sales 或 #purhases,这会将条件附加到查询中。
更新
看起来您想从 1 个表单中搜索两种不同类型的微帖子。
app/views/home/index.html.erb
<%= form_tag(root_path, :method => :get) do
<%= text_field_tag 'search'%>
<%= submit_tag 'Search' %>
%>
app/models/micropost.rb
scope :purchase_or_sale, where("kind IN ?", ["purchase", "sale"])
def self.search(search)
if search
where('name LIKE ?', "%#{search}%")
else
scoped
end
end
def purchase?
kind == "purchase"
end
def sale?
kind == "sale"
end
/app/controllers/home_controller.rb
def home
@microposts = Micropost.search(params[:search]).purchase_or_sale
@purchases = @microposts.select(&:purchase?)
@sales = @microposts.select(&:sale?)
end
更新 2
好的,再更新一次....这是我认为你现在想要的:2 个搜索表单,都是/microposts ...如果我在销售窗体上搜索,它将显示销售。如果我在购买表单上搜索,它将搜索购买。
您的观点:
<%= form_tag(microposts_path(kind: "purchases", :method => :get) do
<label for="search">Search Purchases:</label>
<%= text_field_tag 'search' %>
<%= submit_tag 'Search' %>
%>
<%= form_tag(microposts_path(kind: "sales", :method => :get) do
<label for="search">Search Sales:</label>
<%= text_field_tag 'search' %>
<%= submit_tag 'Search' %>
%>
您的控制器:
def index
@microposts = Micropost.search(params[:search).for_kind(params[:kind])
end
您的模型
def self.search(search_text)
if search_text
where('name LIKE ?', "%#{search_text}%")
else
scoped
end
end
scope :for_kind, lambda{|search_kind| where(kind: search_kind) }
根据您对另一个回复的评论:
def home
@microposts = Micropost.scoped # so you can later apply any scope
if params[:purchases_search].present?
@microposts = @microposts.purchases.search(params[:purchases_search])
elsif params[:sales_search].present?
@microposts = @microposts.sales.search(params[:sales_search])
end
end
这假定两个搜索字段的名称为"purchases_search"和"sales_search"。
你为什么不把微帖子分成两个继承微帖子模型的新模型呢?
class Micropost < ActiveRecord::Base
#do your general micropost magic here
end
下一个:
class Purchase < Micropost
#do your purchase specific magic here
end
和:
class Sale < Micropost
#do your sale specific magic here
end
您的家庭操作:
def home
@microposts = Micropost.all
@purchases = Purchase.all
@sales = Sale.all
end
如果您需要搜索购买项目:
Purchase.where(:something => "great")
如果您需要搜索销售:
Sale.where(:something => "greater")
如果您需要同时搜索:
Micropost.where(:something => "the greatest")
** 注意 ** 您需要在微帖子表中添加一列"type"才能正常工作,更多信息:单表继承@http://api.rubyonrails.org/classes/ActiveRecord/Base.html