问题
I have a following JSON. I have added 2 x double quotes so that I could declare it as stringvariable in c#, in reality it contains one times double quotes for properties.
The complete example code is in this fiddle.
I am using Newtonsoft but can use System.Text.Json as well so a working solution for either will be appreciated.
{
""display"": ""wizard"",
""settings"": {},
""components"": [
{
""title"": ""Activity Information"",
""label"": ""Activity Information"",
""type"": ""Activity"",
""key"": ""ActivityInformation"",
""components"": [
{
""label"": ""Row1Columns"",
""columns"": [
{
""components"": [
{
""label"": ""Activity Date"",
""format"": ""dd/MM/yyyy hh:mm a"",
""tableView"": false,
""datePicker"": {
""disableWeekends"": false,
""disableWeekdays"": false
},
""validate"": {
""unique"": true
},
""key"": ""Activity.ActivityDate"",
""type"": ""datetime"",
""input"": true,
""suffix"": ""<i ref=\""icon\"" class=\""fa fa-calendar\"" style=\""\""></i>"",
""widget"": {
""type"": ""calendar"",
""displayInTimezone"": ""viewer"",
""language"": ""en"",
""useLocaleSettings"": false,
""allowInput"": true,
""mode"": ""single"",
""enableTime"": true,
""noCalendar"": false,
""format"": ""dd/MM/yyyy hh:mm a"",
""hourIncrement"": 1,
""minuteIncrement"": 1,
""time_24hr"": false,
""minDate"": null,
""disableWeekends"": false,
""disableWeekdays"": false,
""maxDate"": null
}
}
],
""width"": 6,
""offset"": 0,
""push"": 0,
""pull"": 0
},
{
""components"": [
{
""label"": ""Duration (minutes)"",
""mask"": false,
""spellcheck"": true,
""tableView"": false,
""delimiter"": false,
""requireDecimal"": false,
""inputFormat"": ""plain"",
""key"": ""Activity.Duration"",
""type"": ""number"",
""input"": true
}
],
""width"": 6,
""offset"": 0,
""push"": 0,
""pull"": 0
}
],
""tableView"": false,
""key"": ""row1Columns"",
""type"": ""columns"",
""input"": false
},
{
""label"": ""Row2Columns"",
""columns"": [
{
""components"": [
{
""label"": ""Activity Category"",
""widget"": ""choicesjs"",
""tableView"": true,
""dataSrc"": ""custom"",
""data"": {
""custom"": ""values = getActivityCategoryValues()""
},
""valueProperty"": ""AgencyActivityCategoryId"",
""template"": ""<span>{{ item.text }}</span>"",
""selectThreshold"": 0.3,
""validate"": {
""required"": true
},
""key"": ""Activity.AgencyActivityCategoryId"",
""type"": ""select"",
""indexeddb"": {
""filter"": {}
},
""input"": true
}
],
""width"": 6,
""offset"": 0,
""push"": 0,
""pull"": 0
},
{
""components"": [
{
""label"": ""Attendance"",
""widget"": ""choicesjs"",
""tableView"": true,
""multiple"": false,
""dataSrc"": ""custom"",
""data"": {
""custom"": ""values = getAttendanceValues()""
},
""valueProperty"": ""AgencyActivityAttendanceId"",
""template"": ""<span>{{ item.text }}</span>"",
""selectThreshold"": 0.3,
""key"": ""Activity.AgencyActivityAttendanceId"",
""type"": ""select"",
""indexeddb"": {
""filter"": {}
},
""input"": true
}
],
""width"": 6,
""offset"": 0,
""push"": 0,
""pull"": 0
}
],
""tableView"": false,
""key"": ""row2Columns"",
""type"": ""columns"",
""input"": false
},
{
""label"": ""Activity Options"",
""widget"": ""choicesjs"",
""tableView"": true,
""multiple"": true,
""dataSrc"": ""custom"",
""data"": {
""custom"": ""values = getActivityManagerValues(data.Activity.AgencyActivityCategoryId)""
},
""template"": ""<span>{{ item.text }}</span>"",
""refreshOn"": ""Activity.AgencyActivityCategoryId"",
""clearOnRefresh"": true,
""selectThreshold"": 0.3,
""calculateServer"": false,
""validate"": {
""required"": true,
""multiple"": true
},
""key"": ""Activity.ActivityDetail"",
""type"": ""select"",
""indexeddb"": {
""filter"": {}
},
""input"": true
}
],
""input"": false,
""tableView"": false,
""breadcrumbClickable"": true,
""buttonSettings"": {
""previous"": true,
""cancel"": true,
""next"": true
},
""collapsible"": false
}
]
}
I want to add validate and it's child key required, if key of my JSON matches with an item in my list.
I have three scenarios and they are explained as per comments in the code below.
public static void Main()
{
Console.WriteLine("BEFORE MANDATORY");
List<string> mandatoryKeys = new List<string>();
//Scenario 1: Has validate key but not required key in json, so we need to add "required": true
//inside existing "validate"
mandatoryKeys.Add("Activity.ActivityDate");
//Scenario 2: Does not have both validate and required so will need to have both "validate" and its child "required"
mandatoryKeys.Add("Activity.Duration");
//Scenario 3: Has both "validate" and "required" so we should not add it again
mandatoryKeys.Add("Activity.AgencyActivityCategoryId");
//Scenario 2 again for double checking
mandatoryKeys.Add("Activity.AgencyActivityAttendanceId");
var data = JObject.Parse(GetRawJson());
Console.WriteLine(data);
for(int i = 0; i < mandatoryKeys.Count(); i++)
IterateJson(data, mandatoryKeys[i]);
Console.WriteLine("AFTER MANDATORY");
Console.WriteLine("XXXXXXXXXXXXXXX");
Console.WriteLine(data);
Console.ReadLine();
}
The JSON iteration function is displayed below.
static void IterateJson(JToken value, string mandatoryFieldKey)
{
//if more than 0 - so value is object or array and we have to call this method for each property
if (value.Values().Count() != 0)
{
foreach (var item in value.Values().ToList())
{
IterateJson(item, mandatoryFieldKey);
}
}
else if (value.ToString() == mandatoryFieldKey)
{
Console.WriteLine("HELLO");
//check if above "required" property exists
if (value.Parent.Parent is JObject jObject && jObject["validate"] == null)
{
Console.WriteLine(value);
jObject.Add("validate", JObject.FromObject(new { required = true })); //add required property
}
}
}
My final JSON should look like as shown below.
{
""display"": ""wizard"",
""settings"": {},
""components"": [
{
""title"": ""Activity Information"",
""label"": ""Event Information"",
""type"": ""Activity"",
""key"": ""ActivityInformation"",
""components"": [
{
""label"": ""Row1Columns"",
""columns"": [
{
""components"": [
{
""label"": ""Activity Date"",
""format"": ""dd/MM/yyyy hh:mm a"",
""tableView"": false,
""datePicker"": {
""disableWeekends"": false,
""disableWeekdays"": false
},
""validate"": {
""required"": true,
""unique"": true
},
""key"": ""Activity.ActivityDate"",
""type"": ""datetime"",
""input"": true,
""suffix"": ""<i ref=\""icon\"" class=\""fa fa-calendar\"" style=\""\""></i>"",
""widget"": {
""type"": ""calendar"",
""displayInTimezone"": ""viewer"",
""language"": ""en"",
""useLocaleSettings"": false,
""allowInput"": true,
""mode"": ""single"",
""enableTime"": true,
""noCalendar"": false,
""format"": ""dd/MM/yyyy hh:mm a"",
""hourIncrement"": 1,
""minuteIncrement"": 1,
""time_24hr"": false,
""minDate"": null,
""disableWeekends"": false,
""disableWeekdays"": false,
""maxDate"": null
}
}
],
""width"": 6,
""offset"": 0,
""push"": 0,
""pull"": 0
},
{
""components"": [
{
""label"": ""Duration (minutes)"",
""mask"": false,
""spellcheck"": true,
""tableView"": false,
""delimiter"": false,
""requireDecimal"": false,
""inputFormat"": ""plain"",
""validate"": {
""required"": true
},
""key"": ""Activity.Duration"",
""type"": ""number"",
""input"": true
}
],
""width"": 6,
""offset"": 0,
""push"": 0,
""pull"": 0
}
],
""tableView"": false,
""key"": ""row1Columns"",
""type"": ""columns"",
""input"": false
},
{
""label"": ""Row2Columns"",
""columns"": [
{
""components"": [
{
""label"": ""Activity Category"",
""widget"": ""choicesjs"",
""tableView"": true,
""dataSrc"": ""custom"",
""data"": {
""custom"": ""values = getActivityCategoryValues()""
},
""valueProperty"": ""AgencyActivityCategoryId"",
""template"": ""<span>{{ item.text }}</span>"",
""selectThreshold"": 0.3,
""validate"": {
""required"": true
},
""key"": ""Activity.AgencyActivityCategoryId"",
""type"": ""select"",
""indexeddb"": {
""filter"": {}
},
""input"": true
}
],
""width"": 6,
""offset"": 0,
""push"": 0,
""pull"": 0
},
{
""components"": [
{
""label"": ""Attendance"",
""widget"": ""choicesjs"",
""tableView"": true,
""multiple"": false,
""dataSrc"": ""custom"",
""data"": {
""custom"": ""values = getAttendanceValues()""
},
""valueProperty"": ""AgencyActivityAttendanceId"",
""template"": ""<span>{{ item.text }}</span>"",
""selectThreshold"": 0.3,
""validate"": {
""required"": true
},
""key"": ""Activity.AgencyActivityAttendanceId"",
""type"": ""select"",
""indexeddb"": {
""filter"": {}
},
""input"": true
}
],
""width"": 6,
""offset"": 0,
""push"": 0,
""pull"": 0
}
],
""tableView"": false,
""key"": ""row2Columns"",
""type"": ""columns"",
""input"": false
},
{
""label"": ""Activity Options"",
""widget"": ""choicesjs"",
""tableView"": true,
""multiple"": true,
""dataSrc"": ""custom"",
""data"": {
""custom"": ""values = getActivityManagerValues(data.Activity.AgencyActivityCategoryId)""
},
""template"": ""<span>{{ item.text }}</span>"",
""refreshOn"": ""Activity.AgencyActivityCategoryId"",
""clearOnRefresh"": true,
""selectThreshold"": 0.3,
""calculateServer"": false,
""validate"": {
""required"": true,
""multiple"": true
},
""key"": ""Activity.ActivityDetail"",
""type"": ""select"",
""indexeddb"": {
""filter"": {}
},
""input"": true
}
],
""input"": false,
""tableView"": false,
""breadcrumbClickable"": true,
""buttonSettings"": {
""previous"": true,
""cancel"": true,
""next"": true
},
""collapsible"": false
}
]
}
I am unable to implement all three scenarios. Can someone have a look and provide a solutions? Also, if there is a better approach for accomplishing this then please provide a solution for that approach.
I have created a fiddle to make it easy to help me.
回答1:
I have managed to fix this issue, posting a solution here in case it can help others. I have realised that all controls in my json are part of component object/array so we can use JSONPath, see the link for more details. Following code has done the trick:
public void IterateJson(JObject obj, string mandatoryFieldKey)
{
JToken jTokenFoundForMandatoryField = obj.SelectToken
("$..components[?(@.key == '" + mandatoryFieldKey + "')]");
//Now we convert this oken into an object so that we can add properties/objects in it
if (jTokenFoundForMandatoryField is JObject jObjectForMandatoryField)
{
//We check if validate already exists for this field, if it does not
//exists then we add validate and required property inside the if condition
if (jObjectForMandatoryField["validate"] == null)
jObjectForMandatoryField.Add("validate",
JObject.FromObject(new { required = true })); //add validate and required property
else
{
//If validate does not exists then code comes here and
//we convert the validate into a JObject using is JObject statement
if (jObjectForMandatoryField["validate"] is JObject validateObject)
{
//We need to check if required property already exists,
//if it does not exists then we add it inside the if condition.
if (validateObject["required"] == null)
{
validateObject.Add("required", true); //add required property
}
}
}
}
}
来源：https://stackoverflow.com/questions/62140014/adding-a-property-into-specified-location-into-json-using-newtonsoft-json