【扩展方法】如何利用扩展方法来链式的对MVC 3中的页面进行验证-链式-MVC-验证

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如何利用扩展方法来链式的对MVC 3中的页面进行验证

namespace MvcWeb.Extensions
{
public class JqueryHelper
{
public ViewContext ViewContext { get; private set; }
public WebViewPage ViewPage { get; private set; }
public RouteCollection RouteCollection { get; private set; }
public JqueryHelper(ViewContext viewContext, WebViewPage page, RouteCollection routeCollection)
{
this.ViewContext=viewContext;
this.ViewPage=page;
this.RouteCollection=routeCollection;
}
public JqueryHelper(ViewContext viewContext, WebViewPage viewPage) : this(viewContext, viewPage, RouteTable.Routes) { }
}
public static class JqueryExtensions
{
public static JqueryHelper Jquery(this WebViewPage page)
{
var key=typeof(JqueryHelper);
var jquery=page.PageData[key] as JqueryHelper;
if (jquery==null)
{
page.PageData[key]=jquery=new JqueryHelper(page.ViewContext, page);
}
return jquery;
}
}
public class JqueryValidations
{
public WebViewPage Page { get; private set; }
public JqueryValidations(WebViewPage page)
{
this.Page=page;
}
private Dictionary<string, Dictionary<string, object>> m_rules=new Dictionary<string, Dictionary<string, object>>();
private Dictionary<string, Dictionary<string, object>> m_message=new Dictionary<string, Dictionary<string, object>>();
public void Required(string name,string message)
{
this.AddRuleAndMessage(name, "required", true, message);
}
public void Email(string name, string message)
{
this.AddRuleAndMessage(name,"email",true,message);
}
public void Number(string name, string message)
{
this.AddRuleAndMessage(name, "number", true, message);
}
public void Range(string name,int min,int max, string message)
{
this.AddRuleAndMessage(name, "range", new int[] { min, max }, message);
}
public string ToScripts(string form)
{
JavaScriptSerializer serializer=new JavaScriptSerializer();
StringBuilder builder=new StringBuilder();
builder.Append("$(");
serializer.Serialize(form, builder);
builder.Append(").validate(");
serializer.Serialize(
new
{
rules=this.m_rules,
messages=this.m_message,
onkeyup=false
}, builder);
builder.Append(");");
return builder.ToString();
}
public ValidationElement Element(string name)
{
return new ValidationElement(name, this);
}
private void AddRuleAndMessage(string name, string rule, object value, string message)
{
if (!this.m_rules.ContainsKey(name))
{
this.m_rules[name]=new Dictionary<string, object>();
}
this.m_rules[name][rule]=value;
if (!string.IsNullOrEmpty(message))
{
if (!this.m_message.ContainsKey(name))
{
this.m_message[name]=new Dictionary<string, object>();
}
this.m_message[name][rule]=message;
}
}
}
public class ValidationElement
{
public ValidationElement(string name, JqueryValidations validations)
{
this.Name=name;
this.Validations=validations;
}
public string Name { get; private set; }
public JqueryValidations Validations { get; private set; }
public ValidationElement Required(string message)
{
this.Validations.Required(this.Name, message);
return this;
}
public ValidationElement Email(string message)
{
this.Validations.Email(this.Name, message);
return this;
}
public ValidationElement Number(string message)
{
this.Validations.Number(this.Name, message);
return this;
}
public ValidationElement Range(int min, int max, string message)
{
this.Validations.Range(this.Name, min, max, message);
return this;
}
}
public static class JQueryValidationExtensions
{
public static JqueryValidations Validations(this JqueryHelper jquery)
{
return jquery.Validations("(default)");
}
public static JqueryValidations Validations(this JqueryHelper jquery, string name)
{
var key=typeof(JqueryValidations) + "+" + name;
var page=jquery.ViewPage;
var validations=page.PageData[key] as JqueryValidations;
if (validations==null)
{
page.PageData[key]=validations=new JqueryValidations(page);
}
return validations;
}
}
}

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