Issue - Saving data to appService #12185 | Support Center

Bernard created one month ago

Hi,

I encounter a issue when I want to save my data the following error is displayed :

IThe JSON value could not be converted to System.Collections.Generic.List

Here is my payload:

{ "id": "2", "Questions": { "0.Text": "DDD", "0.Type": "Radio", "0.Answers": { "0.Text": "DDD", "1.Text": "DDDD" } }, "intitule": "DEMO", "descriptif": "", "dateDebut": "09/10/2024 09:54:05", "dateFin": "09/10/2024 09:54:05" }

The js code : ` var questionnaire = _$questionnaireInformationForm.serializeFormToObject();

abp.ui.setBusy();
_questionnairesService
    .createOrEdit(questionnaire)
    .done(function () {
        abp.notify.info(app.localize('SavedSuccessfully'));

        abp.event.trigger('app.createOrEditQuestionnaireModalSaved');
    })
    .always(function () {
        abp.ui.setBusy();
    });

};`

app service public virtual async Task CreateOrEdit(CreateOrEditQuestionnaireDto input) { if (input.Id == null) { await Create(input); } else { await Update(input); } }

The model CreateOrEditQuestionnaireDto :

` public class CreateOrEditQuestionnaireDto : EntityDto<int?> {

  [Required]
  [StringLength(QuestionnaireConsts.MaxIntituleLength, MinimumLength = QuestionnaireConsts.MinIntituleLength)]
  public string Intitule { get; set; }

  [StringLength(QuestionnaireConsts.MaxDescriptifLength, MinimumLength = QuestionnaireConsts.MinDescriptifLength)]
  public string Descriptif { get; set; }

  public DateTime DateDebut { get; set; }

  public DateTime DateFin { get; set; }

  public QuestionDto Question { get; set; }
  public List<QuestionDto> questions { get; set; }

List question class :

` public class QuestionDto : EntityDto { public string Text { get; set; }

 public bool Obligatoire { get; set; }

 public string Type { get; set; }

 public string Image { get; set; }

 [NotMapped]
 public int Index { get; set; }

 public virtual int Number { get; set; }

 public int Score { get; set; }

 public int SurveyId { get; set; }

 public List<AnswerResponseDto> Answers { get; set; }

Thks for help Bernard

2 Answer(s)

oguzhanagir created one month ago

Support Team

Hi Bernard

Your payload contains nested objects like:

{
  "Questions": {
    "0.Text": "DDD",
    "0.Type": "Radio",
    "0.Answers": {
      "0.Text": "DDD",
      "1.Text": "DDDD"
    }
  }
}

But this isn't how ASP.NET Core expects lists (arrays) to be sent. It expects a structure like:

{
  "Questions": [
    {
      "Text": "DDD",
      "Type": "Radio",
      "Answers": [
        { "Text": "DDD" },
        { "Text": "DDDD" }
      ]
    }
  ]
}

In your case, Questions should be a list of QuestionDto, and Answers should be a list of AnswerDto.

Bernard created one month ago

HI,

I had to convert my Json like following

`var questionnaire = _$questionnaireInformationForm.serializeFormToObject();

function convertJsonToArray(oldJson) {

var newJson = {
    "Questions": [],
    "intitule": oldJson.intitule,
    "descriptif": oldJson.descriptif,
    "dateDebut": oldJson.dateDebut,
    "dateFin": oldJson.dateFin
};


$.each(oldJson.Questions, function (index, questionData) {
    if (index.includes("Text")) {
        // Extraire la question
        var questionIndex = index.split(".")[0];
        var question = {
            "Text": questionData,
            "Type": oldJson.Questions[questionIndex + ".Type"],
            "Answers": []
        };

   
        $.each(oldJson.Questions[questionIndex + ".Answers"], function (answerKey, answerValue) {
            if (answerKey.includes("Text")) {
                question.Answers.push({ "Text": answerValue });
            }
        });

  
        newJson.Questions.push(question);
    }
});

return newJson;

}

// Conversion var newJson = convertJsonToArray(questionnaire); debugger

console.log(JSON.stringify(newJson, null, 4));

abp.ui.setBusy(); _questionnairesService .createOrEdit(newJson)`......

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