/// <summary>
/// Helper method to create a root model for a tree
/// </summary>
/// <returns></returns>
protected virtual ActionResult <TreeNode?> CreateRootNode(FormCollection queryStrings)
{
var rootNodeAsString = Constants.System.RootString;
queryStrings.TryGetValue(TreeQueryStringParameters.Application, out StringValues currApp);
var node = new TreeNode(
rootNodeAsString,
null, //this is a root node, there is no parent
Url.GetTreeUrl(_apiControllers, GetType(), rootNodeAsString, queryStrings),
Url.GetMenuUrl(_apiControllers, GetType(), rootNodeAsString, queryStrings))
{
HasChildren = true,
RoutePath = currApp,
Name = RootNodeDisplayName
};
return(node);
}
/// <summary>
/// If the request is for a dialog mode tree
/// </summary>
/// <param name="queryStrings"></param>
/// <returns></returns>
protected bool IsDialog(FormCollection queryStrings)
{
queryStrings.TryGetValue(TreeQueryStringParameters.Use, out StringValues use);
return(use == "dialog");
}
/// <summary>
/// Returns the object based in the collection based on it's key. This does this with a conversion so if it doesn't convert a null object is returned.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="items"></param>
/// <param name="key"></param>
/// <returns></returns>
public static T GetValue <T>(this FormCollection items, string key)
{
if (items.TryGetValue(key, out var val) == false || string.IsNullOrEmpty(val))
{
return(default);