看到下图,是通过Jqgrid实现表格数据的基本增删查改的操作。表格数据增删改是一般企业应用系统开发的常见功能,不过不同的是这个表格数据来源是非关系型的数据库MongoDB。nosql虽然概念新颖,但是MongoDB基本应用实现起来还是比较轻松的,甚至代码比基本的ADO.net访问关系数据源还要简洁。由于其本身的“非关系”的数据存储方式,使得对象关系映射这个环节对于MongoDB来讲显得毫无意义,因此我们也不会对MongoDB引入所谓的“ORM”框架。
下面我们将逐步讲解怎么在MVC模式下将MongoDB数据读取,并展示在前台Jqgrid表格上。这个“简易系统”的基本设计思想是这样的:我们在视图层展示表格,Jqgrid相关Js逻辑全部放在一个Js文件中,控制层实现了“增删查改”四个业务,MongoDB的基本数据访问放在了模型层实现。下面我们一步步实现。
一、实现视图层Jqgrid表格逻辑
首先,我们新建一个MVC空白项目,添加好jQuery、jQueryUI、Jqgrid的前端框架代码:
然后在Views的Home文件夹下新建视图“Index.aspx”,在视图的body标签中添加如下HTML代码:
<
div
>
<
table
id
=
"table1"
>
table
>
<
div
id
=
"div1"
>
div
>
div
>
|
接着新建Scripts\Home文件夹,在该目录新建“Index.js”文件,并再视图中引用,代码如下:
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jQuery(document).ready(
function
() {
//jqGrid初始化
jQuery(
"#table1"
).jqGrid({
url:
'/Home/UserList'
,
datatype:
'json'
,
mtype:
'POST'
,
colNames: [
'登录名'
,
'姓名'
,
'年龄'
,
'手机号'
,
'邮箱地址'
,
'操作'
],
colModel: [
{ name:
'UserId'
, index:
'UserId'
, width: 180, editable:
true
},
{ name:
'UserName'
, index:
'UserName'
, width: 200, editable:
true
},
{ name:
'Age'
, index:
'Age'
, width: 150, editable:
true
},
{ name:
'Tel'
, index:
'Tel'
, width: 150, editable:
true
},
{ name:
'Email'
, index:
'Email'
, width: 150, editable:
true
},
{ name:
'Edit'
, index:
'Edit'
, width: 150, editable:
false
, align:
'center'
}
],
pager:
'#div1'
,
postData: {},
rowNum: 5,
rowList: [5, 10, 20],
sortable:
true
,
caption:
'用户信息管理'
,
hidegrid:
false
,
rownumbers:
true
,
viewrecords:
true
}).navGrid(
'#div1'
, { edit:
false
, add:
false
, del:
false
})
.navButtonAdd(
'#div1'
, {
caption:
"编辑"
,
buttonicon:
"ui-icon-add"
,
onClickButton:
function
() {
var
id = $(
"#table1"
).getGridParam(
"selrow"
);
if
(id ==
null
) {
alert(
"请选择行!"
);
return
;
}
if
(id ==
"newId"
)
return
;
$(
"#table1"
).editRow(id);
$(
"#table1"
).find(
"#"
+ id +
"_UserId"
).attr(
"readonly"
,
"readOnly"
);
$(
"#table1"
).setCell(id,
"Edit"
,
""
);
}
}).navButtonAdd(
'#div1'
, {
caption:
"删除"
,
buttonicon:
"ui-icon-del"
,
onClickButton:
function
() {
var
id = $(
"#table1"
).getGridParam(
"selrow"
);
if
(id ==
null
) {
alert(
"请选择行!"
);
return
;
}
Delete(id);
}
}).navButtonAdd(
'#div1'
, {
caption:
"新增"
,
buttonicon:
"ui-icon-add"
,
onClickButton:
function
() {
$(
"#table1"
).addRowData(
"newId"
, -1);
$(
"#table1"
).editRow(
"newId"
);
$(
"#table1"
).setCell(
"newId"
,
"Edit"
,
""
);
}
});
});
//取消编辑状态
function
Cancel(id) {
if
(id ==
"newId"
) $(
"#table1"
).delRowData(
"newId"
);
else
$(
"#table1"
).restoreRow(id);
}
//向后台ajax请求新增数据
function
Add() {
var
UserId = $(
"#table1"
).find(
"#newId"
+
"_UserId"
).val();
var
UserName = $(
"#table1"
).find(
"#newId"
+
"_UserName"
).val();
var
Age = $(
"#table1"
).find(
"#newId"
+
"_Age"
).val();
var
Tel = $(
"#table1"
).find(
"#newId"
+
"_Tel"
).val();
var
Email = $(
"#table1"
).find(
"#newId"
+
"_Email"
).val();
$.ajax({
type:
"POST"
,
url:
"/Home/Add"
,
data:
"UserId="
+ UserId +
"&UserName="
+ UserName +
"&Age="
+ Age +
"&Tel="
+ Tel +
"&Email="
+ Email,
success:
function
(msg) {
alert(
"新增数据: "
+ msg);
$(
"#table1"
).trigger(
"reloadGrid"
);
}
});
}
//向后台ajax请求更新数据
function
Update(id) {
var
UserId = $(
"#table1"
).find(
"#"
+ id +
"_UserId"
).val();
var
UserName = $(
"#table1"
).find(
"#"
+ id +
"_UserName"
).val();
var
Age = $(
"#table1"
).find(
"#"
+ id +
"_Age"
).val();
var
Tel = $(
"#table1"
).find(
"#"
+ id +
"_Tel"
).val();
var
Email = $(
"#table1"
).find(
"#"
+ id +
"_Email"
).val();
$.ajax({
type:
"POST"
,
url:
"/Home/Update"
,
data:
"UserId="
+ UserId +
"&UserName="
+ UserName +
"&Age="
+ Age +
"&Tel="
+ Tel +
"&Email="
+ Email,
success:
function
(msg) {
alert(
"修改数据: "
+ msg);
$(
"#table1"
).trigger(
"reloadGrid"
);
}
});
}
//向后台ajax请求删除数据
function
Delete(id) {
var
UserId = $(
"#table1"
).getCell(id,
"UserId"
);
$.ajax({
type:
"POST"
,
url:
"/Home/Delete"
,
data:
"UserId="
+ UserId,
success:
function
(msg) {
alert(
"删除数据: "
+ msg);
$(
"#table1"
).trigger(
"reloadGrid"
);
}
});
}
|
二、实现控制层业务
在Controllers目录下新建控制器“HomeController.cs”,Index.js中产生了四个ajax请求,对应控制层也有四个业务方法。HomeController代码如下:
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public
class
HomeController : Controller
{
UserModel userModel =
new
UserModel();
public
ActionResult Index()
{
return
View();
}
///
/// 获取全部用户列表,通过json将数据提供给jqGrid
///
public
JsonResult UserList(
string
sord,
string
sidx,
string
rows,
string
page)
{
var list = userModel.FindAll();
int
i = 0;
var query = from u
in
list
select
new
{
id = i++,
cell =
new
string
[]{
u[
"UserId"
].ToString(),
u[
"UserName"
].ToString(),
u[
"Age"
].ToString(),
u[
"Tel"
].ToString(),
u[
"Email"
].ToString(),
"-"
}
};
var data =
new
{
total = query.Count() / Convert.ToInt32(rows) + 1,
page = Convert.ToInt32(page),
records = query.Count(),
rows = query.Skip(Convert.ToInt32(rows) * (Convert.ToInt32(page) - 1)).Take(Convert.ToInt32(rows))
};
return
Json(data, JsonRequestBehavior.AllowGet);
}
///
/// 响应Js的“Add”ajax请求,执行添加用户操作
///
public
ContentResult Add(
string
UserId,
string
UserName,
int
Age,
string
Tel,
string
Email)
{
Document doc =
new
Document();
doc[
"UserId"
] = UserId;
doc[
"UserName"
] = UserName;
doc[
"Age"
] = Age;
doc[
"Tel"
] = Tel;
doc[
"Email"
] = Email;
try
{
userModel.Add(doc);
return
Content(
"添加成功"
);
}
catch
{
return
Content(
"添加失败"
);
}
}
///
/// 响应Js的“Delete”ajax请求,执行删除用户操作
///
public
ContentResult Delete(
string
UserId)
{
try
{
userModel.Delete(UserId);
return
Content(
"删除成功"
);
}
catch
{
return
Content(
"删除失败"
);
}
}
///
/// 响应Js的“Update”ajax请求,执行更新用户操作
///
public
ContentResult Update(
string
UserId,
string
UserName,
int
Age,
string
Tel,
string
Email)
{
Document doc =
new
Document();
doc[
"UserId"
] = UserId;
doc[
"UserName"
] = UserName;
doc[
"Age"
] = Age;
doc[
"Tel"
] = Tel;
doc[
"Email"
] = Email;
try
{
userModel.Update(doc);
return
Content(
"修改成功"
);
}
catch
{
return
Content(
"修改失败"
);
}
}
}
|
三、实现模型层数据访问
最后,我们在Models新建一个Home文件夹,添加模型“UserModel.cs”,实现MongoDB数据库访问代码如下:
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public
class
UserModel
{
//链接字符串(此处三个字段值根据需要可为读配置文件)
public
string
connectionString =
"mongodb://localhost"
;
//数据库名
public
string
databaseName =
"myDatabase"
;
//集合名
public
string
collectionName =
"userCollection"
;
private
Mongo mongo;
private
MongoDatabase mongoDatabase;
private
MongoCollection
public
UserModel()
{
mongo =
new
Mongo(connectionString);
mongoDatabase = mongo.GetDatabase(databaseName)
as
MongoDatabase;
mongoCollection = mongoDatabase.GetCollection
as
MongoCollection
mongo.Connect();
}
~UserModel()
{
mongo.Disconnect();
}
///
/// 增加一条用户记录
///
///
public
void
Add(Document doc)
{
mongoCollection.Insert(doc);
}
///
/// 删除一条用户记录
///
public
void
Delete(
string
UserId)
{
mongoCollection.Remove(
new
Document { {
"UserId"
, UserId } });
}
///
/// 更新一条用户记录
///
///
public
void
Update(Document doc)
{
mongoCollection.FindAndModify(doc,
new
Document { {
"UserId"
, doc[
"UserId"
].ToString() } });
}
///
/// 查找所有用户记录
///
///
public
IEnumerable
{
return
mongoCollection.FindAll().Documents;
}
}
|
四、小结
代码下载:http://files.cnblogs.com/lipan/MongoDB_003.rar
自此为止一个简单MongoDB表格数据操作的功能就实现完毕了,相信读者在看完这篇文章后,差不多都可以轻松实现MongoDB项目的开发应用了。聪明的你一定会比本文做的功能更完善,更好。下篇计划讲解linq的方式访问数据集合。
出处: [Lipan] ( http://www.cnblogs.com/lipan/)
版权声明:本文的版权归作者与博客园共有。转载时须注明本文的详细链接,否则作者将保留追究其法律责任。