/// <summary>
/// Renders client-side Javascript function for looking up single values from a table.
/// </summary>
/// <param name="valueFieldName">Table field name as defined in the table.</param>
/// <param name="idFieldName">Name of primary key field, defaults to "ID".</param>
/// <param name="lookupFunctionName">Name of lookup function, defaults to lookup + <paramref name="groupName"/>.ToTitleCase() + Value.</param>
/// <param name="arrayName">Name of lookup function, defaults to lookup + <paramref name="groupName"/>.ToTitleCase() + Value.</param>
/// <returns>Client-side Javascript lookup function.</returns>
public static string RenderAbstract <T>(string valueFieldName, string idFieldName = "ID", string lookupFunctionName = null, string arrayName = null) where T : class, new()
{
StringBuilder javascript = new StringBuilder();
DataContext dataContext = new DataContext();
if (string.IsNullOrWhiteSpace(lookupFunctionName))
{
lookupFunctionName = $"lookup{valueFieldName}Value";
}
if (string.IsNullOrWhiteSpace(arrayName))
{
arrayName = $"{valueFieldName}";
}
TableOperations <T> operations = dataContext.Table <T>() as TableOperations <T>;
javascript.AppendLine($"var {arrayName} = [];\r\n");
foreach (T record in operations.QueryRecords())
{
var valueField = operations.GetFieldValue(record, valueFieldName);
var idField = operations.GetFieldValue(record, idFieldName);
javascript.AppendLine($" {arrayName}[\"{idField.ToString().JavaScriptEncode()}\"] = \"{valueField?.ToString().JavaScriptEncode()}\";");
}
javascript.AppendLine($"\r\n function {lookupFunctionName}(value) {{");
javascript.AppendLine($" return {arrayName}[value];");
javascript.AppendLine(" }");
return(javascript.ToString());
}
