public ActionResult Rajasthan()
{
//List<PackageGallery> all = new List<PackageGallery>();
using (travelAndTourismEntities objentity = new travelAndTourismEntities())
{
List<PackageGallery> all = (from p in objentity.PackageGalleries where p.ParentCategory == "Rajasthan" orderby p.Imageid select p).ToList();
// all = objentity.PackageGalleries.ToList();
return View(all);
}
}
I am writing this query but this is specific to rajasthan only how to make it generalize
You can create a parameter to your action method where you accept the state name you want to use in your filter.
public ActionResult PackageGalleries(string id)
{
var all = new List<PackageGallery>();
using (var db = new travelAndTourismEntities())
{
all = db.PackageGalleries
.Where(s=>s.ParentCategory==id)
.OrderBy(x=>x.ImageId).ToList();
}
return View(all);
}
And you can call it like yourSiteName/yourControllerName/PackageGalleries/rajasthan or yourSiteName/yourControllerName/PackageGalleries/kerala
The last part of the url will be mapped to the id parameter of the action method.
Related
I have 2 lists of IDs and I need to return a list with the products that aren't in any of those lists:
public IEnumerable<Produto> GetProdutosIdNotInFamily(Guid produtoId)
{
var produtosPai = GetListaPaisId(produtoId);
var produtosFilho = GetListaFilhosId(produtoId);
var prod = _dbContext.Produtos
.Where(u => !produtosPai.Any(p => p.ProdutoFilhoId == u.Id)
&& !produtosFilho.Any(p => p.ProdutoFilhoId == u.Id));
return prod;
}
You can do this in two ways -- One using Contains and other using Any like you provided in your snippet in the post.
Using Contains Method
If you want to use Contains() method, you may be pulling out all the product Ids into a collection and apply LINQ on top of it and get the list that is not part of both your reference lists. Sample code is as shown below
// This is the sample model I am dealing with
public class Dummy
{
public int Id { get; set; }
public string Name { get; set; }
}
// Assuming the below call returns list of 'Dummy' objects
var products = _dbContext.Produtos;
// list1 & list2 are populated in your case already through the method calls
var exclusionList1 = list1.Select(x => x.Id).ToList<int>();
var exclusionList2 = list2.Select(x => x.Id).ToList<int>();
var myList = products.Where(x => !exclusionList1.Contains(x.Id) && !exclusionList1.Contains(x.Id)).ToList();
Contains is an instance method and takes an object as a parameter and the time complexity depends on the collection you're using this on.
Using Any
Just like Where, Any is an extension method. It takes a delegate as a parameter which gives you greater flexibility and control with respect to what you would want to do.
Applying Any to your scenario is as shown below:
var products = _dbContext.Produtos;
var exclusionList1 = GetListaPaisId(produtoId);
var exclusionList2 = GetListaFilhosId(produtoId);
var prod = _dbContext.Produtos.Where(x => !exclusionList1.Any(z => x.Id == z.Id) &&
!exclusionList2.Any(z => x.Id == z.Id)).ToList();
You can choose your approach based on the context under which you are performing this operation.
I have a method called GetPrivlidge() that I will use it in every controller ,this method is used for what will the current logged user will see and what will not see this is the method
public void GetPrivlidge()
{
string name = System.Web.HttpContext.Current.User.Identity.Name;
name = EncriptionAndDecription.Encrypt(name);
int UserId = (from c in db.users where c.Arabicusername == name select c.Usersid).SingleOrDefault();
SamahyatOfUser S = (from SS in db.SamahyatOfUsers where SS.User_Id == UserId select SS).SingleOrDefault();
ViewBag.Pri = S;
string RoleName = (from R in db.Roles where R.User_ID == UserId && R.UserName == name select R.RoleName).SingleOrDefault();
if (RoleName.Equals(EncriptionAndDecription.Encrypt("Admin")))
{
ViewBag.ADMIN = true;
}
else
{
ViewBag.ADMIN = false;
}
}
I use ViewBag.Pri to check in layout for privilege ,I must send this ViewBag in every action so I decided to make controller that have all common methods this is my controller
public class AllRequiredDataController : Controller
{
//
// GET: /AllRequiredData/
mts_exchangeEntities db = new mts_exchangeEntities();
//this Method is used in privlidge that make user do thing and dont make anthor thing (Do or not Do)
#region privlidge_Data
public void GetPrivlidge()
{
string name = System.Web.HttpContext.Current.User.Identity.Name;
name = EncriptionAndDecription.Encrypt(name);
int UserId = (from c in db.users where c.Arabicusername == name select c.Usersid).SingleOrDefault();
SamahyatOfUser S = (from SS in db.SamahyatOfUsers where SS.User_Id == UserId select SS).SingleOrDefault();
ViewBag.Pri = S;
string RoleName = (from R in db.Roles where R.User_ID == UserId && R.UserName == name select R.RoleName).SingleOrDefault();
if (RoleName.Equals(EncriptionAndDecription.Encrypt("Admin")))
{
ViewBag.ADMIN = true;
}
else
{
ViewBag.ADMIN = false;
}
}
#endregion
}
and in _layOut I take this ViewBag and make cast for in and work with privilege as this
FinalMts.Models.SamahyatOfUser S = (FinalMts.Models.SamahyatOfUser)ViewBag.Pri;
and in action I make Controller object and call the method GetPrivlidge()
as this
AllRequiredDataController Required = new AllRequiredDataController();
public ActionResult AddCurrencyPrices()
{
//get privlidg Data
Required.GetPrivlidge();
return View();
}
but the layout don't see the ViewBag.Pri and error message say that
Object reference not set to an instance of an object.
is this controller can't see ViewBag if yes what should I do to deal with this ViewBag?
Each controller has its own ViewBag. Better is to inherit your controller form AllRequiredDataController and use this way
class Controller1 : AllRequiredDataController
{
public ActionResult AddCurrencyPrices()
{
//get privlidg Data
GetPrivlidge();
return View();
}
}
I have my web api and I added the web api help pages to auto-generate my documentation. It's working great for methods where my parameters are listed out, but I have a method like this:
public SessionResult PostLogin(CreateSessionCommand request)
And, on my help page, it is only listing the command parameter in the properties section. However, in the sample request section, it lists out all of the properties of my CreateSessionCommand class.
Parameters
Name | Description | Additional information
request | No documentation available. | Define this parameter in the request body.
I would like it instead to list all of the properties in my CreateSessionCommand class. Is there an easy way to do this?
So, I managed to devise a workaround for this problem, in case anyone is interested.
In HelpPageConfigurationExtensions.cs I added the following extension method:
public static void AlterApiDescription(this ApiDescription apiDescription, HttpConfiguration config)
{
var docProvider = config.Services.GetDocumentationProvider();
var addParams = new List<ApiParameterDescription>();
var removeParams = new List<ApiParameterDescription>();
foreach (var param in apiDescription.ParameterDescriptions)
{
var type = param.ParameterDescriptor.ParameterType;
//string is some special case that is not a primitive type
//also, compare by full name because the type returned does not seem to match the types generated by typeof
bool isPrimitive = type.IsPrimitive || String.Compare(type.FullName, typeof(string).FullName) == 0;
if (!isPrimitive)
{
var properties = from p in param.ParameterDescriptor.ParameterType.GetProperties()
let s = p.SetMethod
where s.IsPublic
select p;
foreach (var property in properties)
{
var documentation = docProvider.GetDocumentation(new System.Web.Http.Controllers.ReflectedHttpParameterDescriptor()
{
ActionDescriptor = param.ParameterDescriptor.ActionDescriptor,
ParameterInfo = new CustomParameterInfo(property)
});
addParams.Add(new ApiParameterDescription()
{
Documentation = documentation,
Name = property.Name,
Source = ApiParameterSource.FromBody,
ParameterDescriptor = param.ParameterDescriptor
});
}
//since this is a complex type, select it to be removed from the api description
removeParams.Add(param);
}
}
//add in our new items
foreach (var item in addParams)
{
apiDescription.ParameterDescriptions.Add(item);
}
//remove the complex types
foreach (var item in removeParams)
{
apiDescription.ParameterDescriptions.Remove(item);
}
}
And here is the Parameter info instanced class I use
internal class CustomParameterInfo : ParameterInfo
{
public CustomParameterInfo(PropertyInfo prop)
{
base.NameImpl = prop.Name;
}
}
Then, we call the extension in another method inside the extensions class
public static HelpPageApiModel GetHelpPageApiModel(this HttpConfiguration config, string apiDescriptionId)
{
object model;
string modelId = ApiModelPrefix + apiDescriptionId;
if (!config.Properties.TryGetValue(modelId, out model))
{
Collection<ApiDescription> apiDescriptions = config.Services.GetApiExplorer().ApiDescriptions;
ApiDescription apiDescription = apiDescriptions.FirstOrDefault(api => String.Equals(api.GetFriendlyId(), apiDescriptionId, StringComparison.OrdinalIgnoreCase));
if (apiDescription != null)
{
apiDescription.AlterApiDescription(config);
HelpPageSampleGenerator sampleGenerator = config.GetHelpPageSampleGenerator();
model = GenerateApiModel(apiDescription, sampleGenerator);
config.Properties.TryAdd(modelId, model);
}
}
return (HelpPageApiModel)model;
}
The comments that are used for this must be added to the controller method and not the properties of the class object. This might be because my object is part of an outside library
this should go as an addition to #Josh answer. If you want not only to list properties from the model class, but also include documentation for each property, Areas/HelpPage/XmlDocumentationProvider.cs file should be modified as follows:
public virtual string GetDocumentation(HttpParameterDescriptor parameterDescriptor)
{
ReflectedHttpParameterDescriptor reflectedParameterDescriptor = parameterDescriptor as ReflectedHttpParameterDescriptor;
if (reflectedParameterDescriptor != null)
{
if (reflectedParameterDescriptor.ParameterInfo is CustomParameterInfo)
{
const string PropertyExpression = "/doc/members/member[#name='P:{0}']";
var pi = (CustomParameterInfo) reflectedParameterDescriptor.ParameterInfo;
string selectExpression = String.Format(CultureInfo.InvariantCulture, PropertyExpression, pi.Prop.DeclaringType.FullName + "." + pi.Prop.Name);
XPathNavigator methodNode = _documentNavigator.SelectSingleNode(selectExpression);
if (methodNode != null)
{
return methodNode.Value.Trim();
}
}
else
{
XPathNavigator methodNode = GetMethodNode(reflectedParameterDescriptor.ActionDescriptor);
if (methodNode != null)
{
string parameterName = reflectedParameterDescriptor.ParameterInfo.Name;
XPathNavigator parameterNode = methodNode.SelectSingleNode(String.Format(CultureInfo.InvariantCulture, ParameterExpression, parameterName));
if (parameterNode != null)
{
return parameterNode.Value.Trim();
}
}
}
}
return null;
}
and CustomParameterInfo class should keep property info as well:
internal class CustomParameterInfo : ParameterInfo
{
public PropertyInfo Prop { get; private set; }
public CustomParameterInfo(PropertyInfo prop)
{
Prop = prop;
base.NameImpl = prop.Name;
}
}
This is currently not supported out of the box. Following bug is kind of related to that:
http://aspnetwebstack.codeplex.com/workitem/877
I have a entity record which is shared with or more users. I would like to unshare this record when Deactivate it. I want to do that in Plugin. But I can't understand how to get all users from sharing list who have access to this record. How to do that?
Here is my code snippet:
protected void ExecutePostPersonSetStateDynamicEntity(LocalPluginContext localContext)
{
if (localContext == null)
{
throw new ArgumentNullException("localContext");
}
var context = localContext.PluginExecutionContext;
var targetEntity = (Entity)context.InputParameters["EntityMoniker"];
var state = (OptionSetValue)context.InputParameters["State"];
var columns = new ColumnSet(new[] { "statecode" });
var retrivedEntity = localContext.OrganizationService.Retrieve(targetEntity.LogicalName, targetEntity.Id, columns);
if (state.Value == 1)
{
RevokeAccessRequest revokeRequest = new RevokeAccessRequest()
{
Target = new EntityReference(personEntity.LogicalName, personEntity.Id),
Revokee = new EntityReference(neededEntity.LogicalName, needed.Id)
};
// Execute the request.
}
}
As you can see, I need an entity "neededEntity", I don't know how to get it from "targetEntity" or "retrievedEntity".
You need to use a RetrieveSharedPrincipalsAndAccessRequest
http://msdn.microsoft.com/en-us/library/microsoft.crm.sdk.messages.retrievesharedprincipalsandaccessrequest.aspx
You can start from the included example, basically inside the foreach you call your RevokeAcessRequest
I modified the "Read" operation on my Windows Azure Mobile Services Preview table (named "Item") as follows:
Javascript:
function read(query, user, request)
{
var howRead;
if(howRead == "unique")
{
var sqlUnique = "SELECT DISTINCT ? FROM Item WHERE qProjectCode = ?";
mssql.query(sqlUnique)
request.execute();
}
else if (howRead == "column")
{
var sqlColumn = "SELECT ? FROM Item WHERE qProjectCode = ?";
mssql.query(sqlColumn)
request.execute();
}
else if (howRead == "all")
{
var sqlAll = "SELECT * FROM Item WHERE qProjectCode = ?";
mssql.query(sqlAll)
request.execute();
}
}
This simply species when I want a unique list of a single column's values returned, all items in a single column, or all columns, respectively, all while limiting the read to those records with a given project code.
Right now, this works in C#, but scans the entire table (with other project codes) and always returns all columns. This is inherently inefficient.
c#
var client = new MobileServiceClient("[https path", "[key]");
var table = client.GetTable<Item>();
var query1 = table.Where(w => w.QProjectCode == qgv.projCode && w.QRecord == (int)lbRecord.Items[uStartRecordIndex]);
var query1Enum = await query1.ToEnumerableAsync();
foreach (var i in query1Enum)
{
// process data
}
How do I alter the c# code to deal with the Javascript code? Feel free to critique the overall approach, since I am not a great programmer and can always use advice!
Thanks
A few things:
In your server code, the mssql calls are not doing anything (useful). If you want to get their results, you need to pass a callback (the call is asynchronous) to it.
Most of your scenarios can be accomplished at the client side. The only for which you'll need server code is the one with the DISTINCT modifier.
For that scenario, you'll need to pass a custom parameter to the server script. You can use the WithParameters method in the MobileServiceTableQuery<T> object to define parameters to pass to the service.
Assuming this data class:
public class Item
{
public int Id { get; set; }
public string Name { get; set; }
public string Description { get; set; }
public string Other { get; set; }
public string ProjectCode { get; set; }
}
The code below can be used to accomplish the scenarios 2 and 3 at the client side only (no script needed at the server side). The other one will need some script, which I'll cover later.
Task<IEnumerable<string>> ReadingByColumn(IMobileServiceTable<Item> table, string projectCode)
{
return table
.Where(i => i.ProjectCode == projectCode)
.Select(i => i.Name)
.ToEnumerableAsync();
}
Task<IEnumerable<Item>> ReadingAll(IMobileServiceTable<Item> table, string projectCode)
{
return table.Where(i => i.ProjectCode == projectCode).ToEnumerableAsync();
}
Task<IEnumerable<string>> ReadingByColumnUnique(IMobileServiceTable<Item> table, string projectCode)
{
var dict = new Dictionary<string, string>
{
{ "howRead", "unique" },
{ "projectCode", projectCode },
{ "column", "Name" },
};
return table
.Select(i => i.Name)
.WithParameters(dict)
.ToEnumerableAsync();
}
Now, to support the last method (which takes the parameters, we'll need to do this on the server script:
function read(query, user, request)
{
var howRead = request.parameters.howRead;
if (howRead) {
if (howRead === 'unique') {
var column = request.parameters.column; // WARNING: CHECK FOR SQL INJECTION HERE!!! DO NOT USE THIS IN PRODUCTION!!!
var sqlUnique = 'SELECT DISTINCT ' + column + ' FROM Item WHERE ProjectCode = ?';
mssql.query(sqlUnique, [request.parameters.projectCode], {
success: function(distinctColumns) {
var results = distinctColumns.map(function(item) {
var result = [];
result[column] = item; // mapping to the object shape
return result;
});
request.respond(statusCodes.OK, results);
}
});
} else {
request.respond(statusCodes.BAD_REQUEST, {error: 'Script does not support option ' + howRead});
}
} else {
// no server-side action needed
request.execute();
}
}