How do I get this $_GET['ago'] variable to increment by 1
public function __construct($future=false) {
$GLOBALS['twd_helper']=&$this;
}
public function query_string($add, $remove=null) {
$qs_data = array();
parse_str($_SERVER['QUERY_STRING'], $qs_data);
$qs_data = array_merge($qs_data, $add);
if ($remove) {
foreach($remove as $key) {
if (isset($qs_data[$key])) {
unset($qs_data[$key]);
}
}
}
return http_build_query($qs_data);
}
public function filter_overnight () {
if (isset($_GET['tod']) && $_GET['tod'] == 'overnight') {
$overnight = $_GET['overnight'];
}
if (($_GET['ago'])) {
$_GET['ago'] ? $_GET['ago']++ : $_GET['ago'] = 0;
}
}
I want to change my URL to increase by 1 each time its clicked
guide?ago=1
guide?ago=2
guide?ago=3
etc
In the html, just do this:
Link Text
Your filter_overnight function is a bit odd too - I think it could be made more readable:
if ($_GET['ago'])
{
$_GET['ago'] = (int)$_GET['ago'] + 1;
}
else
{
$_GET['ago'] = 0;
}
Or with the ternary:
$_GET['ago'] = ($_GET['ago']) ? (int)$_GET['ago'] + 1 : 0
Without seeing the whole code, I'm not sure why filter_overnight is incrementing $_GET['ago'], but at a glance it appears to put an undocumented side effect into the function by changing a global value (which would also render the increment in the <a> pointless). The superglobals in PHP can be dangerous things - I find it best to treat them as immutable and copy values out of them vs working on them directly.
Related
I was taking a look at this :
tornadofx
and tried to expand on it with database connection and little more options, (not all of them make sense, but its just playing in a sandbox).
Even though table can be directly edited and the data will persist in database, i did try to do edit through text fields too. actual table editing would happen through different view and not table itself, as i said its just example.
Database used is Jetbrains Exposed.
object Categories : IntIdTable() {
val name = varchar("name", 64).uniqueIndex()
val description = varchar("description", 128)
}
class Category(id: EntityID<Int>) : IntEntity(id) {
companion object : IntEntityClass<Category>(Categories)
var name by Categories.name
var description by Categories.description
override fun toString(): String {
return "Category(name=\"$name\", description=\"$description\")"
}
}
now controller looks something like this, functions are just rudimentary and picked as an example.
typealias ModelToDirtyState = Map.Entry<CategoryModel, TableColumnDirtyState<CategoryModel>>
class CategoryModel() : ItemViewModel<Category>() {
val name: SimpleStringProperty = bind(Category::name)
val description: SimpleStringProperty = bind(Category::description)
}
class DBController : Controller() {
val categories: ObservableList<CategoryModel> by lazy {
transaction {
SchemaUtils.create(Categories)
Category.all().map {
CategoryModel().apply {
item = it
}
}.observable()
}
}
init {
Database.connect(
"jdbc:mysql://localhost:3306/test", driver = "com.mysql.cj.jdbc.Driver",
user = "test", password = "test"
)
TransactionManager.manager.defaultIsolationLevel = Connection.TRANSACTION_SERIALIZABLE
}
fun deleteCategory(model: CategoryModel) {
runAsync {
transaction {
model.item.delete()
}
}
categories.remove(model)
}
fun updateCategory(model: CategoryModel) {
transaction {
Categories.update {
model.commit()
}
}
}
fun commitDirty(modelDirtyMappings: Sequence<ModelToDirtyState>) {
transaction {
modelDirtyMappings.filter { it.value.isDirty }.forEach {
it.key.commit()
println(it.key)// commit value to database
it.value.commit() // clear dirty state
}
}
}
Just to quickly comment on controller, delete method works as "intended" however the update one does not, it does not work in sense that after using delete item is remove both from database and tableview(underlying list) itself, and when i do update its not, now i know the reason, i call remove manually on both database and list, now for update perhaps i could do change listener, or maybe tornadofx can do this for me, i just cant set it up to do it. Following code will make things clearer i think.
class CategoryEditor : View("Categories") {
val categoryModel: CategoryModel by inject()
val dbController: DBController by inject()
var categoryTable: TableViewEditModel<CategoryModel> by singleAssign()
var categories: ObservableList<CategoryModel> by singleAssign()
override val root = borderpane {
categories = dbController.categories
center = vbox {
buttonbar {
button("Commit") {
action {
dbController.commitDirty(categoryTable.items.asSequence())
}
}
button("Roll;back") {
action {
categoryTable.rollback()
}
}
// This model only works when i use categorytable.tableview.selected item, if i use categoryModel, list gets updated but not the view itself
// Question #1 how to use just categoryModel variable without need to use categorytable.tableview.selecteditem
button("Delete ") {
action {
val model = categoryTable.tableView.selectedItem
when (model) {
null -> return#action
else -> dbController.deleteCategory(model)
}
}
}
//And here no matter what i did i could not make the view update
button("Update") {
action {
when (categoryModel) {
null -> return#action
else -> dbController.updateCategory(categoryModel)
}
categoryTable.tableView.refresh()
}
}
}
tableview<CategoryModel> {
categoryTable = editModel
items = categories
enableCellEditing()
enableDirtyTracking()
onUserSelect() {
//open a dialog
}
//DOES WORK
categoryModel.rebindOnChange(this) { selectedItem ->
item = selectedItem?.item ?: CategoryModel().item
}
// Question #2. why bindSelected does not work, and i have to do it like above
//DOES NOT WORK
// bindSelected(categoryModel)
//
column("Name", CategoryModel::name).makeEditable()
column("Description", CategoryModel::description).makeEditable()
}
}
right = form {
fieldset {
field("Name") {
textfield(categoryModel.name)
}
}
fieldset {
field("Description") {
textfield(categoryModel.description)
}
}
button("ADD CATEGORY") {
action {
dbController.addCategory(categoryModel.name.value, categoryModel.description.value)
}
}
}
}
}
I apologize for huge amount of code, also in last code snipped i left questions in form of comments where i fail to achive desired results.
I am sure i am not properly binding code, i just dont see why, also i sometimes use one variable to update data, my declared one "categoryModel" and sometimes i use tableview.selecteditem, it just seems hacky and i cant seem to grasp way.
Thank you!
I just want to ask how can I properly use the document changes in my app? Btw there are 3 types of that which is ADDED, MODIFIED and lastly REMOVED. TYPE.ADDED works perfectly fine, but in modified and removed it doesn't work well in modified it. I am using a recyclerview for that and here's my code. Am I wrong utilizing it? Also, I am using a instance oldindex and newindex to know the index which is affected by the action performed.
for (DocumentChange doc : documentSnapshots.getDocumentChanges()) {
if(doc.getType() == DocumentChange.Type.ADDED) {
PostsClass post = doc.getDocument().toObject(PostsClass.class).withId(doc.getDocument().getId());
postList.add(post);
Log.d(TAG, post.toString());
postsAdapter.notifyDataSetChanged();
}
else if (doc.getType() == DocumentChange.Type.MODIFIED) {
adoptList.clear();
AdoptClass adopt = doc.getDocument().toObject(AdoptClass.class).withId(doc.getDocument().getId());
adoptList.add(adopt);
adoptListAdapter.notifyItemChanged(oldIndex);
}
else if (doc.getType() == DocumentChange.Type.REMOVED) {
adoptList.remove(oldIndex);
adoptListAdapter.notifyItemRemoved(oldIndex);
}
}
below code worked for me in 3 conditions ADDED,MODIFIED,REMOVED (Android Firestore)
for (DocumentChange documentChange : queryDocumentSnapshots.getDocumentChanges()) {
if (documentChange.getType() == DocumentChange.Type.ADDED) {
String doc_id = documentChange.getDocument().getId();
PostModel postModel = documentChange.getDocument().toObject(PostModel.class).withDocId(doc_id);
postModelList.add(postModel);
} else if (documentChange.getType() == DocumentChange.Type.MODIFIED) {
// modifying
String docID = documentChange.getDocument().getId();
PostModel changedModel = documentChange.getDocument().toObject(PostModel.class).withDocId(docID);
if (documentChange.getOldIndex() == documentChange.getNewIndex()) {
// Item changed but remained in same position
postModelList.set(documentChange.getOldIndex(),changedModel);
postListAdapter.notifyItemChanged(documentChange.getOldIndex());
}else {
// Item changed and changed position
postModelList.remove(documentChange.getOldIndex());
postModelList.add(documentChange.getNewIndex(),changedModel);
postListAdapter.notifyItemMoved(documentChange.getOldIndex(),documentChange.getNewIndex());
}
postListAdapter.notifyDataSetChanged();
} else if (documentChange.getType() == DocumentChange.Type.REMOVED) {
// remove
postModelList.remove(documentChange.getOldIndex());
postListAdapter.notifyItemRemoved(documentChange.getOldIndex());
}
}
I try to update an input value in Angular 2, it works the first time the size value exceeds maxSize, but afterwords it does not work anymore. It seems like when I am setting this.size to some value the UI is not updated, am I overlooking something ?
HTML:
<input type="text" class="form-control" [value]="size" (input)="size = updateValue($event)">
Code:
export class BrushSizePicker {
#Input() minValue;
#Input() maxValue;
#Input() size;
increaseValue(event) {
this.size++;
this.checkValue();
}
decreaseValue(event) {
this.size--;
this.checkValue();
}
updateValue(event) {
this.size = parseInt(event.target.value);
this.checkValue();
return this.size;
}
private checkValue() {
if (this.size > this.maxValue) {
this.size = this.maxValue;
}
if (this.size < this.minValue) {
this.size = this.minValue;
}
}
EDIT:
I logged what happened: checkValue is called every time with the correct input, and it returns the correct value. But the new value is not set into the input field / value field
While it may not solve the problem, the way you have implemented the input event can be simplified. I would have written it like this, side-effect free functions:
updateValue(event) { // The method name with this change is a misnomer
return this.checkValue(parseInt(event.target.value));
}
private checkValue(item) {
if (item > this.maxValue) {
return this.maxValue;
}
else if (else < this.minValue) {
return this.maxValue;
}
return item;
}
I have a function in my view:
#helper truncate(string input, int length)
{
if (input.Length<=length)
{
#input;
}
else
{
#input.Substring(0,length)#:...
}
}
If i write #truncate("some word",50) => it worked
But i write #truncate(item.Description, 50) => it error: Object reference not set to an instance of an object.
Please help me to fix my problem or show me another way to show intro text only in my site
Thanks!
if input is null, then you get error input.Length and input.Substring lines. You should check, if it is not null.
#helper truncate(string input, int length)
{
if(input == null)
{
//
}
else
{
if (input.Length <= length)
{
#input;
}
else
{
#input.Substring(0,length)#:...
}
}
}
EDIT (after comment)
you can use:
input = Regex.Replace(input , "<.*?>", string.Empty);
NOTE: Html.Raw returns markup that is not HTML encoded.
What's the best way to implement a classic curry function in actionscript with a nice syntax?
I've tried:
Function.prototype.curry = function()
{
return "helloWorld";
}
trace((function():void {}).curry());
...approach but that didn't work.
I guess I'm stuck with a ugly approach such as:
FunctionUtils.curry(fp, ... args)
???
I must admit I've never understood the difference between "curry" and "partial". I use the following function to do more or less what you want to do:
package {
public function partial( func : Function, ...boundArgs ) : Function {
return function( ...dynamicArgs ) : * {
return func.apply(null, boundArgs.concat(dynamicArgs))
}
}
}
Usage examples:
var multiply : Function = function( a : Number, b : Number ) : Number { return a * b; }
var multiplyByFour : Function = partial(multiply, 4);
trace(multiplyByFour(3)); // => 12
Ended up with (heavily inspired by dojo's implementation):
public static function curry(func:Function, ... args:Array):*
{
var arity:int = func.length;
var currying:Function = function(func:Function, arity:int, args:Array):*
{
return function(... moreArgs:Array):* {
if(moreArgs.length + args.length < arity)
{
return currying(func, arity, args.concat(moreArgs));
}
return func.apply(this, args.concat(moreArgs));
}
}
return currying(func, arity, args);
}
Request in the comments section to show an example of how to use this:
function foo(i:int, j:int):void
{
trace(i+j);
}
function bar(fp:Function):void
{
fp(2);
}
bar(FunctionUtils.curry(foo, 1)); //trace==3
Silly example, I know, but curry:ing is extremely useful. Have a look at http://www.svendtofte.com/code/curried_javascript/ for theory.