.net Dapper 实践系列(5) ---事务编辑(layui+mvc5+Dapper+MySQL)

写在前面

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上一小节，我们总结了根据Id查询多表数据，最后返回Json对象给前台的例子。接下来，在这一小节我们要实现多表编辑的操作。

实践步骤

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因为上一小节以及创建了Edit视图以及数据的显示。所以，在这里不在重复。主要介绍实现多表编辑的操作。
1.在BorrowBookController控制器中，创建 Edits_Op 方法 实现数据的编辑

/// <summary>
/// 多表编辑
/// </summary>
/// <param name="Jsons">前台接收参数</param>
/// <returns>成功返回1，失败返回0</returns>
public int Edits_Op(sys_Book_Type Jsons)
{
         int result = 0;
         var para = new List<Tuple<string, object>>();
         Tuple<string, object> temp1;
         var id = Jsons.book_Type_id;
         //表1数据
         sys_Book_Type bty = new sys_Book_Type { };
         bty.book_Type_id = id;
         bty.book_Type_Name = Jsons.book_Type_Name;
         bty.book_Type_Des = Jsons.book_Type_Des;
         bty.create_Time = DateTime.Now;
         //表2数据
         var Jsonbook = Jsons.books;
         List<sys_Borrow_Book> listbooks = new List<sys_Borrow_Book> { };
         foreach (var item in Jsonbook)
         {
                sys_Borrow_Book bk = new sys_Borrow_Book();
                bk.book_Id = item.book_Id;
                bk.book_Num = item.book_Name;
                bk.book_Name = item.book_Name;
                bk.book_Desc = item.book_Desc;
                bk.borow_Time = DateTime.Now;
                bk.book_Type_id = id;
                bk.user_Id = "ba33a34eb98411e9870700155d08c915";
                listbooks.Add(bk);
          }

          string sql_bookty = "update  sys_Book_Type set book_Type_Name=?book_Type_Name,book_Type_Des=?book_Type_Des, ";
          sql_bookty += "create_Time=?create_Time where book_Type_id=?book_Type_id";
          temp1 = new Tuple<string, object>(sql_bookty, bty);
          para.Add(temp1);
          string sql_book = "update sys_Borrow_Book set  book_Num=?book_Num,book_Name=?book_Name,";
          sql_book += " book_Desc=?book_Desc,borow_Time=?borow_Time,book_Type_id=?book_Type_id,user_Id=?book_Type_id ";
          sql_book += " where book_Id=?book_Id ";
          temp1 = new Tuple<string, object>(sql_book, listbooks);
          para.Add(temp1);
          result = DapperDBContext.ExecuteTransaction(para).Item1;
          if(result==true){result=1;}
          return result; 
}

2.在Edit视图中 创建 Edit视图

<div class="layui-container">
    <div class="layui-col-md12">
        <h2 style="margin-top:10px;">编辑</h2>
        <hr class="layui-bg-green">
        <div class="layui-form " style="padding:20px;margin:10px 10px 10px 10px;border:1px solid #ddd;" id="" >
            <div class="layui-form-item">
                <label class="layui-form-label">书类型名称</label>
                <div class="layui-input-block">
                    <input type="text" id="book_Type_Id" style="display:none;">
                    <input type="text" name="book_Type_Name" id="book_Type_Name"  placeholder="请输入标题" autocomplete="off" class="layui-input">
                </div>
            </div>
            <div class="layui-form-item layui-form-text">
                <label class="layui-form-label">书类型描述</label>
                <div class="layui-input-block">
                    <textarea class="layui-textarea" name="book_Type_Des" id="book_Type_Des"  placeholder="请输入书籍类型描述"></textarea>
                </div>
            </div>
        </div>
        <div class="layui-form layui-form-pane" style="padding:20px;margin:10px 10px 10px 10px;border:1px solid #ddd;" id="" lay-filter="">
            <button class="layui-btn layui-btn-sm" id="btnAddRow">新增</button>
            <table class="layui-table" id="tab">
                <tr>
                    <th>借书编号</th>
                    <th>书名</th>
                    <th>书简介</th>
                    <th>操作</th>
                </tr>
                <tr class="list">
                    <td><input type="text" name="book_Num" class="layui-input" /></td>
                    <td><input type="text" name="book_Name" class="layui-input" /></td>
                    <td><input type="text" name="book_Desc" class="layui-input" /></td>
                    <td><button class="layui-btn layui-btn-danger layui-btn-sm btnDelRow">删除</button></td>
                </tr>
            </table>
        </div>
        <div style="144px;margin:0 auto">
            <div style="144px;margin:0 auto;">
                <button class="layui-btn layui-btn-normal" id="btnSave">保存</button>
                <button class="layui-btn layui-btn-primary" id="btnCancel">取消</button>
            </div>
        </div>
    </div>
</div>

3.在Edit视图中 操作dom

<script type="text/javascript">
    $(function () {
          $("#btnSave").click(function () {
            var bookType = {
                book_Type_Id: "" + $("#book_Type_Id").val() + "",
                book_Type_Name: "" + $("#book_Type_Name").val() + "",
                book_Type_Des: "" + $("#book_Type_Des").val() + "",
                books: []
            };
            var tr = $("#tab tr:gt(0)");
            for (var i = 0; i < tr.length; i++) {
                var td = $(tr[i]);
                var id = td.children().children().attr("id");
                var aa = td.children().children().val();
                var bb = td.children().next().children().val();
                var cc = td.children().next().next().children().val();
                bookType.books.push({ book_Id: id, book_Num: "" + aa + "", book_Name: "" + bb + "", book_Desc: "" + cc + "" });
            }
            $.ajax({
                url: "../BorrowBook/Edits_Op",
                type: "post",
                dataType: "json",
                contentType: "application/json",
                data: JSON.stringify(bookType)
            }).done(function (msg) {
                alert(msg);
                if (msg == 0) {
                    parent.layer.msg("保存成功!", { icon: 1 });
                    var index = parent.layer.getFrameIndex(window.name); //先得到当前iframe层的索引
                    parent.layer.close(index); //再执行关闭
                }
                else {
                    parent.layer.msg("保存失败!", { icon: 2 });
                    return;
                }
            }).fail(function (e) { });
        });
     });
</script>

注意：
此刻我们会发现，执行Edits_Op的方法只能编辑原来有的数据，而无法通过点击增行来编辑数据的。所以，我们对Edits_Op这个方法进行改造一下。如果要实现编辑的同时也可以添加数据。我们就必须先获取到两张表中有联系的Id。在操作时先删除表，然后再往里面查询编辑好的数据。我称之为变相的编辑。

4.重构Edits_Op方法

/// <summary>
/// 多表编辑
/// </summary>
/// <param name="Jsons">前台接收参数</param>
 /// <returns>成功返回1，失败返回0</returns>
public int Edits_Op(sys_Book_Type Jsons)
{
      int result = 0;
      var para = new List<Tuple<string, object>>();
      Tuple<string, object> temp1;

      var Id = Guid.NewGuid().ToString();
      sys_Book_Type bty = new sys_Book_Type { };
      bty.book_Type_id = Id;
      bty.book_Type_Name = Jsons.book_Type_Name;
      bty.book_Type_Des = Jsons.book_Type_Des;
      bty.create_Time = DateTime.Now;
      //表2数据
      var Jsonbook = Jsons.books;
      List<sys_Borrow_Book> listbooks = new List<sys_Borrow_Book> { };
      foreach (var item in Jsonbook)
      {
           sys_Borrow_Book bk = new sys_Borrow_Book();
           bk.book_Id = Guid.NewGuid().ToString();
           bk.book_Num = item.book_Num;
           bk.book_Name = item.book_Name;
           bk.book_Desc = item.book_Desc;
           bk.borow_Time = DateTime.Now;
           bk.book_Type_id = Id;
           bk.user_Id = "ba33a34eb98411e9870700155d08c915";
           listbooks.Add(bk);
       }
       string sql_del = "delete from sys_Book_Type where book_Type_id=?id";
       string sql_dels = "delete from sys_Borrow_Book where book_Type_id=?id";

       string sql_bookty = "insert into sys_Book_Type(book_Type_id,book_Type_Name,book_Type_Des,create_Time)";
       sql_bookty += " values (?book_Type_id,?book_Type_Name,?book_Type_Des,?create_Time)";

       string sql_book = "insert into sys_Borrow_Book(book_Id,book_Num,book_Name,book_Desc,borow_Time,book_Type_id,user_Id)";
       sql_book += " values (?book_Id,?book_Num,?book_Name,?book_Desc,?borow_Time,?book_Type_id,?user_Id)";

       DynamicParameters p1 = new DynamicParameters();
       p1.Add("?Id", Jsons.book_Type_id);
       temp1 = new Tuple<string, object>(sql_del, p1);
       para.Add(temp1);
       temp1 = new Tuple<string, object>(sql_dels, p1);
       para.Add(temp1);
       temp1 = new Tuple<string, object>(sql_bookty, bty);
       para.Add(temp1);
       temp1 = new Tuple<string, object>(sql_book, listbooks);
       para.Add(temp1);
       bool boolresult = DapperDBContext.ExecuteTransaction(para).Item1;
       if (boolresult == true) { result = 1; }
       return result;
}

最终效果：