Basis of my questions is a simple form. Let's say we have 4 fields
Surname
Name
Question: Do you have a cat?
What's your cat's name
a submit button
Surname and question and cat's name are required fields. If Yes is the answer, the field cat's name is becoming visible.
So far so good. I am using FluentValidation to validate these fields. In my validator, I create the rule for these 3 properties of my viewmodel.
Now I'd only like to validate cat's name, if it's visible. There is no way to remove rules. I also tried with behaviors, but at the time I click submit (which executes the save method in my viewmodel), I don't have access to my behaviors..
What's the best way to achieve this?
If I understood your main question (how to conditionally run a rule/rules using FluentValidation), you have a couple of options. In general, I'd recommend this nuget package (full disclosure, I wrote it), which helps keep things clean and also makes option 1 below a breeze.
Option 1: Run only relevant rules
Based on the value the user provided for has cat or not that you're binding to from your view, you could conditionally pull out the rules from the validator that exclude the rule(s) for that field:
In ViewModel:
var context = new ValidationContext<YourClass>(catInfoStuff);
if (doesNotHasCatLoL)
{
var descriptor = yourAbstractValidatorInstance.CreateDescriptor();
var scopedRules = new List<IValidationRule>();
foreach (var propName in listOfThePropertyNameStringsInYourClass)
scopedRules.AddRange(descriptor.GetRulesForMember(propName));
var fluentValidationResult = new ValidationResult(
scopedRules.SelectMany(x => x.Validate(context)).ToList());
}
else
{
var fluentValidationResult = yourAbstractValidatorInstance.Validate(context);
}
Option 2: Add a true/false flag to RootContextData for running the rule or not. e.g.:
In ViewModel:
var context = new ValidationContext<YourClass>(catInfoStuff);
context.RootContextData["HasCat"] = hasCatBindingValue; // from your view
In AbstractValidator:
RuleFor(catname => catname.CatName)
.Cascade(CascadeMode.StopOnFirstFailure)
.Custom((catname, context) =>
{
if (!context.ParentContext.RootContextData.ContainsKey("HasCat"))
{
// You may not want to flag this, as you'd likely have a separate rule for that on the other property
context.AddFailure("You need to indicate whether you have a cat or not...");
}
else
{
var hasCat = (bool)context.ParentContext.RootContextData["HasCat"];
if (hasCat && string.IsNullOrWhiteSpace(catname))
{
context.AddFailure("Please provide the name of your cat.");
}
// other checks, or just chain more below like you usually would since we StopOnFirstFailure
}
});
Related
FilteredElementCollector Lincoln = new FilteredElementCollector(doc);
Lincoln.OfCategory(BuiltInCategory.OST_RvtLinks); Autodesk.Revit.DB.View CurrentView = uiDoc.ActiveView;
ICollection<ElementId> Toggle_On = Lincoln.ToElementIds(); Toggle_On.Clear();
ICollection<ElementId> Toggle_Off = Lincoln.ToElementIds(); Toggle_Off.Clear();
List<Element> Processed = new List<Element>();
List<string> Revit_On = new List<string>(); List<string> Revit_Off = new List<string>();
List<string> Revit_Names = new List<string>();
foreach (Element One_Link in Lincoln)
{
string Revit_Name = One_Link.Name;
if (!Revit_Names.Contains(Revit_Name))//prevents processing same link twice;/but does NOT change anyway!!!!
{
Revit_Names.Add(Revit_Name);
Boolean Is_Hidden = One_Link.IsHidden(CurrentView);//
if (Is_Hidden)
{
Toggle_On.Add(One_Link.Id); Revit_On.Add(One_Link.Name);
}//this apparently does detect what is hidden;
else
{
Toggle_Off.Add(One_Link.Id); Revit_Off.Add(One_Link.Name);
}
}
}
Transaction Do_Toggle = new Transaction(doc, "DoToggle");
Do_Toggle.Start();
if (!Toggle_Off.Count.Equals(0)) { CurrentView.HideElements(Toggle_Off); }
if (!Toggle_On.Count.Equals(0)) { CurrentView.UnhideElements(Toggle_On); }
Do_Toggle.Commit();
Is somehow the transaction failing? Undo is not available, so it doesn't think it has done anything that might need to be undone. Note that this EXACT code is used in another one of my addins (in which multiple optional sub-programs are controlled by picking radio options on a form). But when I am trying to use the code in a standalone version, it fails (without errors). Note also that I've inserted multiple TaskDialog entries to verify that it is indeed finding the RvtLinks that are either visible or hidden in the current view. But it is simply refusing to actually change their visibility. If I run the dialog controlled version, everything toggles, but if I immediately run the standalone, nothing toggles (proving it isn't uneditable pinned links). I have made this option available to users by making "Toggle Links" the default so they can call up my collected program and just hit a carriage return, but I need this to be a true standalone.
You code confuses me. For instance, why do you initialise the Toggle_On and Toggle_Off collections with member values, only to clear them immediately afterwards?
In any case, you use of the transaction does not follow the recommended pattern of enclosing it in a using statement.
Please refer to The Building Coder topic group on Handling Transactions and Transaction Groups for more information on using transactions in the Revit API.
So I have a cmdlet written in c#: Get-LivingCharacter. I want users to use this like Get-LivingCharacter -Name "Bran", but I would like to allow for the list of available characters to change. Maybe today, "Bran" is a valid name to pass in for Get-LivingCharacter, but maybe in the future it will not be. Things happen.
For convenience I want to allow tab-completion of this field. However, I can't seem to get that to work for non-const data sets. Dynamic fields don't even auto-complete the field name, nevermind the value, and I don't know a way to implement this for a non-dynamic field. Conceptually, I could generate a .ps1 file on startup given the current data set, and then load that ps1 as the module, but this feels a bit like killing a pup with a greatsword - lots of overkill. Is there a better option?
I had already implemented a similar function to the DynamicParam helper function, as reference in the comments. However, tab completion wasn't working. I was writing a minimal reproduction example, when...my tab completion worked.
It turns out, it reproducibly works/breaks based on the inclusion of a WriteDebug statement:
[Cmdlet("Get", "LivingCharacter")]
public class GetLivingCharacter : Cmdlet, IDynamicParameters
{
protected override void ProcessRecord()
{
}
public object GetDynamicParameters()
{
WriteDebug("Getting names"); // Tab completion won't work with this here - comment it out and it works.
^^^^^^^^^^
var chars = new List<String>() { "Bran", "Arya" };
var dict = new RuntimeDefinedParameterDictionary();
var attributes = new Collection<Attribute>
{
new ParameterAttribute
{
HelpMessage = "Enter a valid open name",
Mandatory = true
},
new ValidateSetAttribute(chars.ToArray()),
};
dict.Add("Name", new RuntimeDefinedParameter("Name", typeof(string), attributes));
return dict;
}
}
After some digging, the WriteDebug statement is throwing (which I assume is because it can't output while I'm typing). It then recreates the GetLivingCharacter class after I've finished the command to validate. It took a while to find since, because of the issue, I can't write the error to the console, so I had to append to a temp file instead.
Here is an interesting requirement. How would I solve this with Breezejs?
(note, using a SPA design based on and extremely similar to the one in John Papa's Angular + Breezejs Pluralsight course)
We have a business rule that says that when I add or edit customer phone number, I need to check the phone number to see if there is a different customer with the same number (can happen due to phone number reassignment, etc).
If I find that it is a dup, I need to prompt the user. The user has the option to say "yah, that's fine", and then the phone number will save anyway.
So, I get how to do a basic validation with BeforeSaveEntity, and to fail if I find the dup, but suppose the user checks the "save anyway" option. How do I include this "out of band", non-data row information in my save set so that I can override the server-side validation rule?
And also, I don't want this validation to look like a "normal" error to the user on save -- I want to detect that it was the phone number clash thing, so I can display the view that prompts them to override.
Out of band data can be passed either by using the SaveOptions.tag property or by going to a separate named endpoint in your save call. i.e.
var so = new SaveOptions({ tag: "Special kind of save with extra data" });
return myEntityManager.saveChanges(null, so);
or
var so = new SaveOptions({ resourceName: "SaveWithSpecialValidation", tag: "any special data" });
return em.saveChanges(null, so);
In terms of how to return a special server side save validation
[HttpPost]
public SaveResult SaveWithSpecialValidation(JObject saveBundle) {
// custom tag passed from the client
var theTag = ContextProvider.SaveOptions.Tag;
ContextProvider.BeforeSaveEntitiesDelegate = BeforeSaveWithException;
return ContextProvider.SaveChanges(saveBundle);
}
private Dictionary<Type, List<EntityInfo>> BeforeSaveWithException(Dictionary<Type, List<EntityInfo>> saveMap) {
List<EntityInfo> orderInfos;
if (saveMap.TryGetValue(typeof(Order), out orderInfos)) {
if (YourErrorCheckHere(orderInfos)) {
var errors = orderInfos.Select(oi => {
return new EFEntityError(oi, "WrongMethod", "My custom exception message", "OrderID");
});
// This is a special exception that will be forwarded correctly back to the client.
var ex = new EntityErrorsException("test of custom exception message", errors);
// if you want to see a different error status code use this.
// ex.StatusCode = HttpStatusCode.Conflict; // Conflict = 409 ; default is Forbidden (403).
throw ex;
}
}
return saveMap;
}
Hope this makes sense. :)
I've got a custom list that contains multi collumns. The validation is made by a custom contenttype. Now I want a combination of two columns to be unique. Until know I did not found a way to solve this problem with on-board functions, so my idea was to use the eventreceiver or a customcontenttype.
What I tried:
ListEventReceiver
public override void ItemAdding(SPItemEventProperties properties)
{
if (properties.AfterProperties["a1"].ToString() == properties.AfterProperties["a2"].ToString())
{
properties.Status = SPEventReceiverStatus.CancelWithError;
properties.Cancel = true;
properties.ErrorMessage = "Failure";
}
base.ItemAdding(properties);
}
It works fine, but the error message is not show as a validation error. It is a new errorpage.
CustomContenttype
If I try to validate in a custom contenttype I can not access the value of an other field from the contenttype. So I can not compare two fields or check they are unique.
if you want to validation using ItemEventReceiver than you should use Sharepoint Error message page.
its will so you better of your Errormessage.I have used it.
Like :
if (properties.AfterProperties["a1"].ToString() == properties.AfterProperties["a2"].ToString())
{
properties.Status = SPEventReceiverStatus.CancelWithRedirectUrl;
properties.RedirectUrl = properties.WebUrl + "/_layouts/error.aspx?ErrorText=Entry is Failure";
}
or another way is Use PreSaveAction with javascript able to do valiation on list's forms.
I have been working on implementing a custom RSS feed in sitecore 6.4. My custom behaviour is very limited, all i effectively wanted to is add a link for author (our author field is a reference field so we cannot use the built in author attribution).
I overrode RenderItem() on the PublicFeed class so that i could make use of my own implementation of the FeedRenderer class (where the author logic is housed). my approach follows this pattern outlined by John West for adding your own rendering behaviour:
public class MyPUblicFeed: PublicFeed
{
protected override SyndicationItem RenderItem(Item item)
{
Assert.ArgumentNotNull(item, "item");
Control rendererControl = FeedUtil.GetFeedRendering(item);
if (rendererControl == null)
{
return null;
}
using (new ContextItemSwitcher(item))
{
var myRenderer= rendererControl as MyFeedRenderer;
if (myRenderer!= null)
{
myRenderer.Database = SitecoreHelper.CurrentDatabase.Name;
return myRenderer.RenderItem();
}
var renderer = rendererControl as Sitecore.Web.UI.WebControls.FeedRenderer;
if (renderer != null)
{
renderer.Database = SitecoreHelper.CurrentDatabase.Name;
return renderer.RenderItem();
}
}
throw new InvalidOperationException("FeedRenderer rendering must be of Sitecore.Web.UI.WebControls.FeedRenderer type");
}
}
And now for my rendering class:
public class MyFeedRenderer: Sitecore.Web.UI.WebControls.FeedRenderer
{
public override SyndicationItem RenderItem()
{
Item item = base.GetItem();
var syndicationItem = base.RenderItem();
//unfortunately we have to parse params again :(
FeedRenderingParameters feedRenderingParameter = FeedRenderingParameters.Parse(base.Parameters);
AddAuthor(syndicationItem, item, feedRenderingParameter);
return syndicationItem;
}
private static void AddAuthor(SyndicationItem syndicationItem, Item item, FeedRenderingParameters feedRenderingParameter)
{
//clear out authors added by base class
syndicationItem.Authors.Clear();
//logic for adding author here
}
}
this all works great, outputting exactly what i want, but the caching element doesn't appear to be working. I have set the cacheable flag on the actual item itself with a timespan of 01:00:00. This didn't appear to work - if i put a breakpoint in either of the above classes it is hit everytime the feed is requested.
so then i tried to enable caching at a control level, turning caching on with VaryByData for the MyFeedRenderer rendering. alas this isn't working either, the breakpoint is hit every time.
Can anyone offer any advice on this matter? the documentation simply recommends turning it on on the actual feed item, not at the Rendering level, but neither seem to be working for me. Interestingly HTML caching is working elsewhere - is RSS also put into the HTML cache?
Thanks in advance,
Nick
-Ensure the Cacheable checkbox in the feed definition item is checked.
-Ensure that you have published the feed definition item.
-If you do not populate the Cache Duration field in the feed definition item, it should default to one day.
-Feeds appear to cache in Sitecore.Syndication.FeedManager.Cache rather than the site output cache. Inspect that cache object in the Visual Studio debugger after calling your feed, and then again after calling that feed a second time, to try to see if any records appear, and if multiple cache keys appear for the same feed. Investigate the Render() method; if PublicFeed.IsCacheable() returns false (depending on the Cacheable field in the feed definition item), PublicFeed.Render() does not cache.
-Ensure nothing else clears caches between your requests for the feed.
SDN forum thread: http://sdn.sitecore.net/forum/ShowPost.aspx?PostID=40591