我无法理解制作高级搜索表单的最佳方法。我在互联网上有一个很好的搜索，在某些方面看，但我不能让他们工作，因为大多数建议已经过时。我已经问了一个问题，但我觉得我太具体了，我无法解决问题。我想在一个搜索按钮上搜索不同的文本框和下拉框。
EDIT2：
projects_controller：
def index
@projects = Project.all
respond_to do |format|
format.html # index.html.erb
format.json { render :json => @projects }
end
end
def search
@project_search = Project.search(params[:search]).order(sort_column + ' ' + sort_direction).paginate(:per_page => 2, :page => params[:page])
end
# GET /projects/1
# GET /projects/1.json
def show
@project = Project.find(params[:id])
respond_to do |format|
format.html # show.html.erb
format.json { render json: @project }
end
end
# GET /projects/new
# GET /projects/new.json
def new
@project = Project.new
respond_to do |format|
format.html # new.html.erb
format.json { render json: @project }
end
end
# GET /projects/1/edit
def edit
@project = Project.find(params[:id])
end
# POST /projects
# POST /projects.json
def create
@project = Project.new(params[:project])
@project.client = params[:new_client] unless params[:new_client].blank?
@project.exception_pm = params[:new_exception_pm] unless params[:new_exception_pm].blank?
@project.project_owner = params[:new_project_owner] unless params[:new_project_owner].blank?
@project.role = params[:new_role] unless params[:new_role].blank?
@project.industry = params[:new_industry] unless params[:new_industry].blank?
@project.business_div = params[:new_business_div] unless params[:new_business_div].blank?
respond_to do |format|
if @project.save
format.html { redirect_to @project, notice: 'Project was successfully created.' }
format.json { render json: @project, status: :created, location: @project }
else
format.html { render action: "new" }
format.json { render json: @project.errors, status: :unprocessable_entity }
end
end
end
# PUT /projects/1
# PUT /projects/1.json
def update
@project = Project.find(params[:id])
respond_to do |format|
if @project.update_attributes(params[:project])
format.html { redirect_to @project, notice: 'Project was successfully updated.' }
format.json { head :no_content }
else
format.html { render action: "edit" }
format.json { render json: @project.errors, status: :unprocessable_entity }
end
end
end
# DELETE /projects/1
# DELETE /projects/1.json
def destroy
@project = Project.find(params[:id])
@project.destroy
respond_to do |format|
format.html { redirect_to projects_url }
format.json { head :no_content }
end
end
private
helper_method :sort_column, :sort_direction
def sort_column
Project.column_names.include?(params[:sort]) ? params[:sort] : "project_name"
end
def sort_direction
%w[asc desc].include?(params[:direction]) ? params[:direction] : "asc"
end
end
搜索视图：
<h1>Search</h1>
<%= form_tag search_path, method: :get do %>
<%= hidden_field_tag :direction, params[:direction] %>
<%= hidden_field_tag :sort, params[:sort] %>
<%= text_field_tag :project_name, params[:project_name] %>
<%= text_field_tag :client, params[:client] %>
<%= submit_tag "Search", name: nil %>
<% end %>
<table class = "pretty">
<table border="1">
<tr>
<th><%= sortable "project_name", "Project name" %> </th>
<th><%= sortable "client", "Client" %></th>
<th>Exception pm</th>
<th>Project owner</th>
<th>Tech</th>
<th>Role</th>
<th>Industry</th>
<th>Financials</th>
<th>Business div</th>
<th>Status</th>
<th>Start date</th>
<th>End date</th>
<% if false %>
<th>Entry date</th>
<th>Edited date</th>
<th>Summary</th>
<th>Lessons learned</tStackh>
<th>Customer benifits</th>
<th>Keywords</th>
<!th></th>
<!th></th>
<!th></th>
<% end %>
</tr>
<% @project_search.each do |t| %>
<tr>
<td><%= t.project_name %></td>
<td><%= t.client %></td>
<td><%= t.exception_pm %></td>
<td><%= t.project_owner %></td>
<td><%= t.tech %></td>
<td><%= t.role %></td>
<td><%= t.industry %></td>
<td><%= t.financials %></td>
<td><%= t.business_div %></td>
<td><%= t.status %></td>
<td><%= t.start_date %></td>
<td><%= t.end_date %></td>
<% if false %>
<td><%= t.entry_date %></td>
<td><%= t.edited_date %></td>
<td><%= t.summary %></td>
<td><%= t.lessons_learned %></td>
<td><%= t.customer_benifits %></td>
<td><%= t.keywords %></td>
<% end %>
<!td><%#= link_to 'Show', project %></td>
<!td><%#= link_to 'Edit', edit_project_path(project) %></td>
<!td><%#= link_to 'Destroy', project, method: :delete, data: { confirm: 'Are you sure?' } %></td>
</tr>
<% end %>
</table>
<br />
<%= will_paginate (@project_search) %>
<%= button_to "Search Again?", search_path, :method => "get" %>
<%# end %>
<%= button_to "Home", projects_path, :method => "get" %>
Project.rb
class Project < ActiveRecord::Base
attr_accessible :business_div, :client, :customer_benifits, :edited_date, :end_date, :entry_date, :exception_pm, :financials, :industry, :keywords, :lessons_learned, :project_name, :project_owner, :role, :start_date, :status, :summary, :tech
validates_presence_of :business_div, :client, :customer_benifits, :end_date, :exception_pm, :financials, :industry, :keywords, :lessons_learned, :project_name, :project_owner, :role, :start_date, :status, :summary, :tech
def self.search search_term
return scoped unless search_term.present?
where find(:all, :conditions => ['project_name OR client LIKE ?', "%#{search_term}%"])
end
end
路线：
FinalApp::Application.routes.draw do
resources :projects
match "search" => "projects#search", :as => :search
root :to => 'projects#index'
end
正如您所看到的，我距离完成申请还有一段距离。我正在尝试创建一个搜索表单，可以搜索以下字段：项目名称，客户端，ID，行业，角色，技术，项目所有者，状态，开始日期，结束日期和关键字。搜索表单将具有文本框或下拉菜单，具体取决于用户搜索的字段。我想链接每个字段并一次性搜索它们。以前，我只使用project_name和客户端作为示例，以便您更容易理解我的代码。希望你现在可以看到我想要做的事情。
答案 0 :(得分：8)
您可以创建一个名为search的新控制器。
您的搜索表单：
<%= form_tag search_index_path, method: :get do %>
<%= text_field_tag :project, params[:project] %>
<%= text_field_tag :client, params[:client] %>
<%= submit_tag "Search", name: nil %>
<% end %>
在你的routes.rb中包含：
get "search/index"
您的搜索控制器：
def index
#store all the projects that match the name searched
@projects = Project.where("name LIKE ? ", "%#{params[:project]}%")
#store all the clients that match the name searched
@clients = Client.where("name LIKE ? ", "%#{params[:client]}%")
end
现在，您可以在索引视图中使用@projects和@clients。
请注意，因为如果搜索不匹配，这些变量可能会变为零。
编辑 - 我假设您有两个模型Project和Client - 如果您无法创建新控制器，则可以在当前控制器中创建搜索操作。< / p>
def search
#store all the projects that match the name searched
@projects = Project.where("name LIKE ? ", "%#{params[:project]}%")
#store all the clients that match the name searched
@clients = Client.where("name LIKE ? ", "%#{params[:client]}%")
end
而且您可以在搜索视图中使用@projects和@clients。
如果您尝试在其他位置显示结果（例如index视图），则可以将上述操作移至正确的操作。
def index
....
#store all the projects that match the name searched
@projects = Project.where("name LIKE ? ", "%#{params[:project]}%")
#store all the clients that match the name searched
@clients = Client.where("name LIKE ? ", "%#{params[:client]}%")
end
编辑2 - 好的，您正尝试使用同一模型中的字段组合进行搜索：
您并更改搜索方法以添加以下两个字段：
def self.search(search_project, search_client)
return scoped unless search_project.present? || search_client.present?
where(['project_name LIKE ? AND client LIKE ?', "%#{search_project}%", "%#{search_client}%"])
end
但请注意，如果您的search_project或search_client不存在，||将返回范围，如果您愿意，可以更改AND（＆amp;＆amp;）。
另外，AND只有在两者匹配时才会返回，我的意思是搜索的组合...如果需要，您也可以将其更改为OR。
拥有搜索表单：
您的搜索表单：
<%= form_tag search_index_path, method: :get do %>
<%= text_field_tag :project, params[:project] %>
<%= text_field_tag :client, params[:client] %>
<%= submit_tag "Search", name: nil %>
<% end %>
然后您的控制器必须将组合发送到模型：
@project_search = Project.search(params[:project], params[:client]).all
我认为它会解决问题...
答案 1 :(得分：1)
我一直在我的应用程序中使用MetaSearch，发现它非常方便。如果您已经考虑过，那么您遇到了什么问题？
同一作者也有Ransack，它是MetaSearch的继承者。
答案 2 :(得分：0)
可在此rails cast
中找到简单的解释基本上，我们必须测试参数是否包含特定字段并创建过滤器。请参阅以下示例：
def find_products
products = Product.order(:name)
products = products.where("name like ?", "%#{keywords}%") if keywords.present?
products = products.where(category_id: category_id) if category_id.present?
products = products.where("price >= ?", min_price) if min_price.present?
products = products.where("price <= ?", max_price) if max_price.present?
products
end
另一种选择是Ransack。 Ransack可以为Ruby on Rails应用程序创建简单和高级搜索表单