构建ASP.NET MVC4+EF5+EasyUI+Unity2.x注入的后台管理系统（44）-工作流设计-设计表单...

构建ASP.NET MVC4+EF5+EasyUI+Unity2.x注入的后台管理系统（44）-工作流设计-设计表单

原文:构建ASP.NET MVC4+EF5+EasyUI+Unity2.x注入的后台管理系统（44）-工作流设计-设计表单

系列目录

设计表单是比较复杂的一步，完成一个表单的设计其实很漫长，主要分为四步。

开始之前先说说表的结构。

其实表Flow_Form与Flow_FormContent设计是有一个缺陷的。我总共是设置最高26个字段从A~Z如果超过26个字段的表单是属于硬编码的。但是我认为26个字段已经足够

因为这里我是单表模式比起表关联无限字段理论上性能会更加快，特别是当数据库申请带到千万级数据的时候（你自己可以设计更加灵活的表单管理）

Flow_Form的A~Z对应的是Flow_FlowAttr表中的数据，

Flow_FormContent表中的数据就是用户对表单的申请内容。同样从A~Z对应。这个表设计也有缺陷，我把内容全部设置为varchar(2048)字段太大，可以根据自己的扩展来确定内容是最佳的方式，比如A-F是大字段，G-L设置的是中级长度的字段，M-O是数字的字段等等

准备开始

1.新建控制器FormController（用代码生成器即可）

新建视图Create.cshtml，这里我设计了一个手风琴，设计表单的同时设计字段

把代码生成器生成的Form表单的的Create代码放到

第一步：设计表单里面

第二步添加字段，添加字段是一个DropDownList+easyui-combogrid来组成。

具体代码实现如下

@model App.Models.Flow.Flow_FormModel
@using App.Common;
@using App.Models.Flow;
@using App.Admin;
@using App.Models.Sys;
@{ViewBag.Title = "创建";Layout = "~/Views/Shared/_Index_LayoutEdit.cshtml";List<permModel> perm = (List<permModel>)ViewBag.Perm;if (perm == null){perm = new List<permModel>();}
}<script type="text/javascript">$(function () {jQuery("#accordion").accordion({ //初始化accordion
            fillSpace: true,fit: false,border: false,animate: false});$("#btnSave").click(function () {if ($("form").valid()) {$.ajax({url: "@Url.Action("Create")",type: "Post",data: $("form").serialize(),dataType: "json",success: function (data) {if (data.type == 1) {window.parent.frameReturnByMes(data.message);window.parent.frameReturnByReload(true);window.parent.frameReturnByClose()}else {window.parent.frameReturnByMes(data.message);}}});}return false;});$("#btnReturn").click(function () {window.parent.frameReturnByClose();});//改变字段列表
        $("#TypeName").change(function () {$('#attrVal').val("");$('#formAttrComboGrid').combogrid('setValue', '').combogrid('clear');$("#formAttrComboGrid").combogrid('grid').datagrid("load", { queryStr: $("#TypeName").val() });});});//添加一个字段到表单function AddAttr() {var currentValue= $('#attrVal').val();if (currentValue == "") {$.messageBox5s('提示', "请选择要添加的字段！");}var charNo = $("#AttrList tr").size()+1;//第几个字符if (charNo > 26){$.messageBox5s('提示', "目前设计最高26个字段！");return;}var b = false;$("#AttrList input[type='hidden']").each(function (i) {//判断是否有重复的项目if ($(this).val() == currentValue){b = true;return;}});if (b){$.messageBox5s('提示', "已经有重复的项目了！");return;}var grid = $("#formAttrComboGrid").combogrid("grid");//获取表格对象 var row = grid.datagrid('getSelected');//获取行数据 var currentChar = "Attr" + getChar(charNo);//获取当前的字母var example = getExample(row.AttrType);//添加到候选区
        $("#AttrList").append("<tr id='tr" + currentChar + "'><td style='text-align:right'>" + row.Title + "：</td>" +"<td>" + example + "<input id='" + currentChar + "' name='" + currentChar + "' type='hidden' value='" + currentValue + "' /></td><td><a href=\"javascript:deleteCurrentTR('tr" + currentChar + "');\">[删除]</a></td></tr>");//设置combogrid为空
        $('#formAttrComboGrid').combogrid('setValue', '');}function deleteCurrentTR(c){ $.messager.confirm('提示', '删除字段吗？', function (r) {if (r) {$("#" + c).remove();}});}function getExample(v){switch (v){case "文本": return "<input type='text' />";case "多行文本": return "<textarea></textarea>";case "数字": return "<input type='text' />"; case "日期": return "<input type='text' />";}}function getChar(i){switch (i){case 1: return "A"; break;case 2: return "B"; break;case 3: return "C"; break;case 4: return "D"; break;case 5: return "E"; break;case 6: return "F"; break;case 7: return "G"; break;case 8: return "H"; break;case 9: return "I"; break;case 10: return "J"; break;case 11: return "K"; break;case 12: return "L"; break;case 13: return "M"; break;case 14: return "N"; break;case 15: return "O"; break;case 16: return "P"; break;case 17: return "Q"; break;case 18: return "R"; break;case 19: return "S"; break;case 20: return "T"; break;case 21: return "U"; break;case 22: return "V"; break;case 23: return "W"; break;case 24: return "S"; break;case 25: return "Y"; break;case 26: return "Z"; break;default: break;}}</script>
<div class="mvctool bgb">@Html.ToolButton("btnSave", "icon-save", "保存", perm, "Save", true)@Html.ToolButton("btnReturn", "icon-return", "返回", false)
</div>@using (Html.BeginForm())
{<div id="accordion" class="easyui-accordion"><div title="第一步：设计表单" style="overflow: auto; padding: 10px;">@Html.HiddenFor(model => model.Id)<table class="fromEditTable setTextWidth300"><tbody><tr><td style="width: 100px; text-align: right;">@Html.LabelFor(model => model.Name)：</td><td style="width: 310px">@Html.EditorFor(model => model.Name)</td><td>@Html.ValidationMessageFor(model => model.Name)</td></tr><tr><td style="width: 100px; text-align: right;">@Html.LabelFor(model => model.Remark)：</td><td style="width: 310px">@Html.TextAreaFor(model => model.Remark, 5, 80, new { })</td><td>@Html.ValidationMessageFor(model => model.Remark)</td></tr><tr><td style="width: 100px; text-align: right;">@Html.LabelFor(model => model.UsingDep)：</td><td style="width: 310px">@Html.EditorFor(model => model.UsingDep)</td><td>@Html.ValidationMessageFor(model => model.UsingDep)</td></tr><tr><td style="width: 100px; text-align: right;">@Html.LabelFor(model => model.TypeId)：</td><td style="width: 310px">@Html.DropDownListFor(model => model.TypeId, ViewBag.FlowType as SelectList)</td><td>@Html.ValidationMessageFor(model => model.TypeId)</td></tr><tr><td style="width: 100px; text-align: right;">@Html.LabelFor(model => model.State)：</td><td style="width: 310px">@Html.CheckBoxFor(model => model.State, new { @checked = true })</td><td>@Html.ValidationMessageFor(model => model.State)</td></tr><tr><td><div style="float: right" class="pic_204"></div></td><td colspan="2" class="gray">注：设计好表单和字段才能组成一个完整的表单,设计好表单后才能设计步骤</td></tr></tbody></table></div><div title="第二步：添加字段" style="overflow: auto;"><table class="fromEditTable setTextWidth300 bgb"><tr><td style="width:40px; text-align: right;">类别：</td><td style="width: 110px;">@Html.DropDownListFor(model => model.TypeName, ViewBag.FlowType as SelectList, new { @style = "width:100px;" })</td><td style="width:40px; text-align: right;">字段：</td><td style="width: 210px"><input id="attrVal" name="attrVal" type="hidden" /><select class="easyui-combogrid" style="width:200px" id="formAttrComboGrid" data-options="panelWidth: 470,idField: 'Id',textField: 'Title',rownumbers: true,//行号url: '@Url.Action("GetFormAttrList")?page=1&sort=Id&rows=1000&order=desc',page:1,columns: [[{ field: 'Id', title: 'ID', width: 80, hidden: true },{ field: 'Title', title: '字段标题', width: 80, sortable: true },{ field: 'Name', title: '英文名称', width: 80, sortable: true },{ field: 'AttrType', title: '类型', width: 80, sortable: true },{ field: 'CheckJS', title: '校验脚本', width:50, sortable: true },{field: 'CreateTime', title: '创建时间', width: 80, sortable: true }]], onClickRow: function (index, data) {var value =  $('#formAttrComboGrid').combogrid('getValue');$('#attrVal').val(value);},onLoadSuccess:function (data) {},fitColumns: true"></select></td><td><a href="javascript:AddAttr();" class="easyui-linkbutton" data-options="iconCls:'icon-add'">添加</a></td></tr></table><table id="AttrList" class="fromEditTable setTextWidth300"></table></div></div>
}

Create.cshtml

FormController核心代码

 [HttpPost]public JsonResult GetFormAttrList(GridPager pager, string queryStr){List<Flow_FormAttrModel> list = attrBLL.GetList(ref pager, queryStr);var json = new{total = pager.totalRows,rows = (from r in listselect new Flow_FormAttrModel(){Id = r.Id,Title = r.Title,Name = r.Name,AttrType = r.AttrType,CheckJS = r.CheckJS,TypeId = r.TypeId,CreateTime = r.CreateTime}).ToArray()};return Json(json);}

获取字段列表