How can I check if some value already exist in database I am doing MVC with Entity Framework and I want to check if element with composite key already exist in database application does someone has any suggestion i GOT the Json object but my done() method doesn't work?
I tried with JsonResult method from my controller
public JsonResult Check(int? id1, int? id2)
{
IQueryable<InspekcijskaKontrola> listaKontrola = db.InspekcijskeKontrole.Include(i => i.InspekcijskaTijela).Include(i => i.Proizvod).Select(i => i);
InspekcijskaKontrola inKontrola = listaKontrola.Where(i => i.InspekcijskoTijeloId == id1).Where(i => i.ProizvodId == id2).Select(i => i).Single();
if (inKontrola!=null)
{
return Json(inKontrola, JsonRequestBehavior.AllowGet);
}
return Json(new InspekcijskaKontrola { InspekcijskoTijeloId = -1, ProizvodId = -1 }, JsonRequestBehavior.AllowGet);
}
And I tried to rised modal dialog from my view with script
function prikazi() {
var zahtjev = $.getJSON("/InspekcijskeKontrole/Check?id1=" + $("#kombo3").val() + "&id2=" + $("#kombo4").val());
zahtjev.done(function (kontrola) {
if (kontrola.InspekcijskoTijeloId != -1 && kontrola.ProizvodId != -1) {
$("#p1").text("Inspekcijska kontrola za " + kontrola.ProizvodId + " je vec izvrsena");
$("#modalni1").modal({ backdrop: "static" });
}
});
}
Providing a bit of code would really help. However, right off the bat I could suggest you use something like this to search for a key(or more) from an object:
if(dbContext.Items.Any(anyObjectName=>anyObjectName.firstKey == ValueYouLookFor
&& anyObjectName.secondkey == AnotherValue))
{
//logic to apply if object exists
}
Related
I have this in my template
And this is my class component
ngOnInit(): void {
this.route.queryParamMap
.pipe(
concatMap(
params => {
this.añoUrl = Number(params.get('year'));
this.mesUrl = Number(params.get('mes'));
return this.generalService.getFestivosMes('leioa', this.añoUrl, this.mesUrl)
}
)
)
.subscribe(festivos => {
this.festivos = festivos;
}
)
}
colorColumna(columna: string): string {
var dia = new Date(this.añoUrl, this.mesUrl - 1, +columna.slice(1));
if (columna.slice(0, 1) == 'S' || columna.slice(0, 1) == 'D') {
return 'red'
}
if (this.festivos.find(f => new Date(f.fecha) == dia)) {
return 'red';
}
return 'green';
}
The problem is that when the function colorColumn() is executed this.festivos is empty.
But when the component is finished loading I have this.festivos
I don't know at what point in the component's life cycle I can access the service in order to have the return values available when the angular material table is rendered.
Any idea, please?
Thanks
I am using iTextSharp to create pdf. I have 100k records, but I am getting following exception:
An exception of type 'System.OutOfMemoryException' occurred in
itextsharp.dll but was not handled in user code At the line:
bodyTable.AddCell(currentProperty.GetValue(lst, null).ToString());
Code is:
var doc = new Document(pageSize);
PdfWriter.GetInstance(doc, stream);
doc.Open();
//Get exportable count
int columns = 0;
Type currentType = list[0].GetType();
//PREPARE HEADER
//foreach visible columns check if current object has proerpty
//else search in inner properties
foreach (var visibleColumn in visibleColumns)
{
if (currentType.GetProperties().FirstOrDefault(p => p.Name == visibleColumn.Key) != null)
{
columns++;
}
else
{
//check child property objects
var childProperties = currentType.GetProperties();
foreach (var prop in childProperties)
{
if (prop.PropertyType.BaseType == typeof(BaseEntity))
{
if (prop.PropertyType.GetProperties().FirstOrDefault(p => p.Name == visibleColumn.Key) != null)
{
columns++;
break;
}
}
}
}
}
//header
var headerTable = new PdfPTable(columns);
headerTable.WidthPercentage = 100f;
foreach (var visibleColumn in visibleColumns)
{
if (currentType.GetProperties().FirstOrDefault(p => p.Name == visibleColumn.Key) != null)
{
//headerTable.AddCell(prop.Name);
headerTable.AddCell(visibleColumn.Value);
}
else
{
//check child property objects
var childProperties = currentType.GetProperties();
foreach (var prop in childProperties)
{
if (prop.PropertyType.BaseType == typeof(BaseEntity))
{
if (prop.PropertyType.GetProperties().FirstOrDefault(p => p.Name == visibleColumn.Key) != null)
{
//headerTable.AddCell(prop.Name);
headerTable.AddCell(visibleColumn.Value);
break;
}
}
}
}
}
doc.Add(headerTable);
var bodyTable = new PdfPTable(columns);
bodyTable.Complete = false;
bodyTable.WidthPercentage = 100f;
//PREPARE DATA
foreach (var lst in list)
{
int col = 1;
foreach (var visibleColumn in visibleColumns)
{
var currentProperty = currentType.GetProperties().FirstOrDefault(p => p.Name == visibleColumn.Key);
if (currentProperty != null)
{
if (currentProperty.GetValue(lst, null) != null)
bodyTable.AddCell(currentProperty.GetValue(lst, null).ToString());
else
bodyTable.AddCell(string.Empty);
col++;
}
else
{
//check child property objects
var childProperties = currentType.GetProperties().Where(p => p.PropertyType.BaseType == typeof(BaseEntity));
foreach (var prop in childProperties)
{
currentProperty = prop.PropertyType.GetProperties().FirstOrDefault(p => p.Name == visibleColumn.Key);
if (currentProperty != null)
{
var currentPropertyObjectValue = prop.GetValue(lst, null);
if (currentPropertyObjectValue != null)
{
bodyTable.AddCell(currentProperty.GetValue(currentPropertyObjectValue, null).ToString());
}
else
{
bodyTable.AddCell(string.Empty);
}
break;
}
}
}
}
}
doc.Add(bodyTable);
doc.Close();
A back of the envelope computation of the memory requirements given the data you provided for memory consumption gives 100000 * 40 * (2*20+4) = 167MBs. Well within your memory limit, but it is just a lower bound. I imagine each Cell object is pretty big. If each cell would have a 512 byte overhead you could be well looking at 2GB taken. I reckon it might be even more, as PDF is a complex beast.
So you might realistically be looking at a situation where you are actually running out of memory. If not your computers, then at least the bit C# has set aside for its own thing.
I would do one thing first - check memory consumption like here. You might even do well to try with 10, 100, 1000, 10000, 100000 rows and see up until what number of rows the program works.
You could perhaps try a different thing altogether. If you're trying to print a nicely formatted table with a lot of data, perhaps you could output an HTML document, which can be done incrementally and which you can do by just writing stuff to a file, rather than using a third party library. You can then "print" that HTML document to PDF. StackOverflow to the rescue again with this problem.
I am trying to execute the following call ("api/test/sin=2129VAH99,8974922&sip=108124AG3") from the code below, but I cannot seem to get the call to work, as it keeps responding with 'no data' error.
public HttpResponseMessage Get([FromUri] Query query)
{
var data = db.database_Items.AsQueryable();
if (!String.IsNullOrEmpty(query.sip))
{
var ids = query.sip.Split(',').ToList();
data = data.Where(c => ids.Any(i => (c.SIP != null && c.SIP.Contains(i))));
}
if (!String.IsNullOrEmpty(query.sin))
{
var ids = query.sin.Split(',').ToList();
data = data.Where(c => ids.Any(i => (c.SINs != null && c.SINs.Contains(i))));
}
if (!data.Any())
{
return Request.CreateErrorResponse(HttpStatusCode.NotFound, message);
}
return Request.CreateResponse(HttpStatusCode.OK, data);
}
Any help/guidance would be very much appreciated. Many thanks.
Try to change your Url to :
api/test?sin=2129VAH99,8974922&sip=108124AG3
I am trying to do a simple CRUD app using Ember + Rails and I'm getting the following error when trying to go to the /workouts route.
Error while loading route: TypeError {} ember.js?body=1:415
Uncaught TypeError: Object function () {
if (!wasApplied) {
Class.proto(); // prepare prototype...
}
o_defineProperty(this, GUID_KEY, undefinedDescriptor);
o_defineProperty(this, '_super', undefinedDescriptor);
var m = meta(this), proto = m.proto;
m.proto = this;
if (initMixins) {
// capture locally so we can clear the closed over variable
var mixins = initMixins;
initMixins = null;
this.reopen.apply(this, mixins);
}
if (initProperties) {
// capture locally so we can clear the closed over variable
var props = initProperties;
initProperties = null;
var concatenatedProperties = this.concatenatedProperties;
for (var i = 0, l = props.length; i < l; i++) {
var properties = props[i];
Ember.assert("Ember.Object.create no longer supports mixing in other definitions, use createWithMixins instead.", !(properties instanceof Ember.Mixin));
for (var keyName in properties) {
if (!properties.hasOwnProperty(keyName)) { continue; }
var value = properties[keyName],
IS_BINDING = Ember.IS_BINDING;
if (IS_BINDING.test(keyName)) {
var bindings = m.bindings;
if (!bindings) {
bindings = m.bindings = {};
} else if (!m.hasOwnProperty('bindings')) {
bindings = m.bindings = o_create(m.bindings);
}
bindings[keyName] = value;
}
var desc = m.descs[keyName];
Ember.assert("Ember.Object.create no longer supports defining computed properties.", !(value instanceof Ember.ComputedProperty));
Ember.assert("Ember.Object.create no longer supports defining methods that call _super.", !(typeof value === 'function' && value.toString().indexOf('._super') !== -1));
Ember.assert("`actions` must be provided at extend time, not at create time, when Ember.ActionHandler is used (i.e. views, controllers & routes).", !((keyName === 'actions') && Ember.ActionHandler.detect(this)));
if (concatenatedProperties && indexOf(concatenatedProperties, keyName) >= 0) {
var baseValue = this[keyName];
if (baseValue) {
if ('function' === typeof baseValue.concat) {
value = baseValue.concat(value);
} else {
value = Ember.makeArray(baseValue).concat(value);
}
} else {
value = Ember.makeArray(value);
}
}
if (desc) {
desc.set(this, keyName, value);
} else {
if (typeof this.setUnknownProperty === 'function' && !(keyName in this)) {
this.setUnknownProperty(keyName, value);
} else if (MANDATORY_SETTER) {
Ember.defineProperty(this, keyName, null, value); // setup mandatory setter
} else {
this[keyName] = value;
}
}
}
}
}
finishPartial(this, m);
this.init.apply(this, arguments);
m.proto = proto;
finishChains(this);
sendEvent(this, "init");
} has no method 'find'
My code is located here: https://github.com/ecl1pse/ember-workouts
What am I doing wrong?
Edit: Upon further investigation I believe the culprit is
EmberWorkouts.WorkoutsRoute = Ember.Route.extend(
model: -> EmberWorkouts.Workout.find()
This doesn't actually return anything. How do I debug from there?
If I replace that with this
EmberWorkouts.WorkoutsRoute = Ember.Route.extend
model: -> [{title: 'hi'}, {title: 'damn'}]
The view actually renders content.
How do I get the model to collect from Rails properly?
Ember Data's interface has changed a little with the current release:
You can clear out the store.js file entirely. Ember Data will automatically set up a data store for you using the REST Adapter (unless you tell it otherwise).
Use model: -> #store.find('workout') instead.
I tested this with your app and it works.
If you haven't read through the Ember Data Guide in the last week or two (it's changed a lot), I would spend a few minutes on it.
The fix for this error (as of ember-data 1.0.0.beta.6) for me was to make sure that the JSON returned from the server included an "id" field for each model, BUT not to explicitly declare the id when setting up the Ember DS.Model.
jbuilder template:
json.scans do
json.array! #scans do |scan|
json.id scan.id # This prop has to be there
json.name scan.name
end
end
Ember model:
EmberApp.Scan = DS.Model.extend(
// Don't include the id prop here
name: DS.attr("string")
)
I am having issues with my application. I have a db table for a print queue. When I read from that table in a loop, once I add that record to the view model, I then want to delete it from the database...this would be the most efficient way to do it, but EF barks:
An entity object cannot be referenced by multiple instances of IEntityChangeTracker.
I've tried using multiple contexts... but that didn't seem to work either. I've seen articles like Rick Strahl's, but frankly it was above my level of understanding, and not exactly sure if it helps my issue here and seemed quite an in depth solution for something as simple as this.
Is there a simple way to accomplish what I am trying to achieve here?
Here is my code:
public List<InventoryContainerLabelViewModel> CreateLabelsViewModel(int intFacilityId)
{
var printqRep = new Repository<InventoryContainerPrintQueue>(new InventoryMgmtContext());
var printqRepDelete = new Repository<InventoryContainerPrintQueue>(new InventoryMgmtContext());
IQueryable<InventoryContainerPrintQueue> labels =
printqRep.SearchFor(x => x.FacilityId == intFacilityId);
List<InventoryContainerLabelViewModel> labelsViewModel = new List<InventoryContainerLabelViewModel>();
if (labels.Count() > 0)
{
//Get printq record
foreach (InventoryContainerPrintQueue label in labels)
{
IEnumerable<InventoryContainerDetail> icDtls =
label.InventoryContainerHeader.InventoryContainerDetails;
//Get print details
foreach (InventoryContainerDetail icDtl in icDtls)
{
labelsViewModel.Add(new InventoryContainerLabelViewModel()
{
...
populate view model here
}
);//Add label to view model
} //for each IC detail
//Delete the printq record
printqRepDelete.Delete(label); <======== Error Here
} //foreach label loop
}//label count > 0
return labelsViewModel.ToList();
}
In the end, I added a column to the printq table for status, then in the the loop updated it to processed, then called a separate method to delete it.
public List<InventoryContainerLabelViewModel> CreateLabelsViewModel(int intFacilityId)
{
InventoryMgmtContext dbContext = new InventoryMgmtContext();
var printqRep = new Repository<InventoryContainerPrintQueue>(dbContext);
IEnumerable<InventoryContainerPrintQueue> unprintedPrtqRecs =
printqRep.SearchFor(x => x.FacilityId == intFacilityId && x.Printed == false);
List<InventoryContainerLabelViewModel> labelsViewModel = new List<InventoryContainerLabelViewModel>();
if (unprintedPrtqRecs.Count() > 0)
{
//Get printq record
foreach (InventoryContainerPrintQueue unprintedPrtqRec in unprintedPrtqRecs)
{
IEnumerable<InventoryContainerDetail> icDtls =
unprintedPrtqRec.InventoryContainerHeader.InventoryContainerDetails;
//Get container details to print
foreach (InventoryContainerDetail icDtl in icDtls)
{
labelsViewModel.Add(new InventoryContainerLabelViewModel()
{
...
}
);//Get IC details and create view model
} //for each IC detail
unprintedPrtqRec.Printed = true;
printqRep.Update(unprintedPrtqRec, unprintedPrtqRec, false);
} //foreach label loop
//Commit updated to Printed status to db
dbContext.SaveChanges();
}//label count > 0
return labelsViewModel;
}
public ActionConfirmation<int> DeletePrintQRecs(int intFacilityId)
{
InventoryMgmtContext dbContext = new InventoryMgmtContext();
var printqRep = new Repository<InventoryContainerPrintQueue>(dbContext);
IEnumerable<InventoryContainerPrintQueue> printedPrtqRecs =
printqRep.SearchFor(x => x.FacilityId == intFacilityId && x.Printed == true);
foreach (InventoryContainerPrintQueue printedPrtqRec in printedPrtqRecs)
{
//Delete the printq record
printqRep.Delete(printedPrtqRec, false);
}
//Save Changes on all deletes
ActionConfirmation<int> result;
try
{
dbContext.SaveChanges();
result = ActionConfirmation<int>.CreateSuccessConfirmation(
"All Label Print Q records deleted successfully.",
1);
}
catch (Exception ex)
{
result = ActionConfirmation<int>.CreateFailureConfirmation(
string.Format("An error occured attempting to {0}. The error was: {2}.",
"delete Label Print Q records",
ex.Message),
1
);
}
return result;
}