c#formsasp.net-coreeditrazor-pages
How to assign property in PageModel (by button) for form, maintaining selected page layout [ASP.NET/Razor Page]
My project has page to manage armors. So far page allows user to show table from DB, create new armor and delete. Unfortunately, I was unable to implement editing/updating.
When user first open page what is seen is table with items and each item have 2 buttons (edit and delete). Above table lays button making DIV containing table disappear and showing DIV containing form. Edit button does this same. This is handled by JavaScript.
I want to use this same form to update armors. But to do it, first need to assign selected armor to Armor property in PageModel. So far, I was able to do it with IActionResult OnPost method, but page then is reloaded losing all my effort. When I tried to return Page() then my page was reloaded with empty table, if I use RedirectToPage(“PageName”) then I still lose selected item and by default table is shown, not the form with selected armor data. How can I do it? It is possible without using additional JavaScript but OnPost metod/s? If not, what can I change and how?
I am using asp.net core 3.1, Entity Framework and Razor Pages.
GitHub: https://github.com/Mlorism/LastTemple/tree/master/LastTemple/Pages/Manage
CSHTML:
<div class="col-7 pl-5 pr-5">
<div id="armourTable" class="text-center">
<button class="btn btn-outline-light mb-2" onclick="ToggleColumn(1)">Stwórz pancerz</button>
<table class="table text-light text-center">
<thead>
<tr>
<th scope="col">Id</th>
<th scope="col">Nazwa</th>
<th scope="col">Odp. fiz.</th>
<th scope="col">Odp. mag.</th>
<th scope="col"></th>
<th scope="col"></th>
</tr>
</thead>
<tbody>
@foreach (var item in Model.Armors)
{
<tr id="tr-@item.Id">
<th scope="row">@item.Id</th>
<td>@item.Name</td>
<td>@item.DamageResistance</td>
<td>@item.MagicResistance</td>
<td><form method="post"><button class="btn btn-outline-warning" type="submit" onclick="Edit(@item.Id)" asp-page-handler="LoadArmor" asp-route-id="@item.Id">Edytuj</button></form></td>
<td><form method="post"><button class="btn btn-outline-warning" type="submit" asp-page-handler="Delete" asp-route-id="@item.Id">Usuń</button></form></td>
</tr>
}
</tbody>
</table>
</div>
<div id="armourForm" class="p-5">
<form id="manipulateArmor" method="post" onreset="resetSliders()">
<div class="form-group">
<label>Nazwa</label>
<input type="text" class="form-control bg-secondary text-light" minlength="5" maxlength="20" required="required" asp-for="Armor.Name" />
<small>Długość od 5 do 20 znaków</small>
</div>
<div class="form-group">
<label>Odporność na obrażenia</label>
<input id="physical" class="mySlider" type="range" value="10" min="0" max="100" step="5" asp-for="Armor.DamageResistance" />
<output>10</output>
</div>
<div class="form-text">
<label>Odporność na magię</label>
<input id="magic" class="mySlider" type="range" value="10" min="0" max="50" step="5" asp-for="Armor.MagicResistance" />
<output>10</output>
</div>
<div class="text-center">
<button type="submit" asp-page-handler="Create" class="btn btn-outline-success m-2">Zapisz</button>
<button id="resetBtn" type="reset" class="btn btn-outline-warning m-2">Resetuj</button>
<button type="button" class="btn btn-outline-danger m-2" onclick="ToggleColumn(0)">Anuluj</button>
</div>
</form>
</div>
</div>
PageModel cs:
private readonly ApplicationDbContext _ctx;
public ArmourModel(ApplicationDbContext ctx)
{
_ctx = ctx;
}
[BindProperty]
public Armor Armor { get; set; }
[BindProperty]
public IEnumerable<Armor> Armors { get; set; }
public void OnGet()
{
Armors = new GetArmors(_ctx).Get();
}
public async Task<IActionResult> OnPostCreateAsync()
{
await new CreateArmor(_ctx).Create(Armor);
return RedirectToPage("Armor");
}
public IActionResult OnPostLoadArmor(int id)
{
Armor item = _ctx.Armors.Find(id);
if (item == null)
{
RedirectToPage("Armor");
}
Armor.Id = item.Id;
Armor.Name = item.Name;
Armor.DamageResistance = item.DamageResistance;
Armor.MagicResistance = item.MagicResistance;
return RedirectToPage("Armor");
}
JS:
function ToggleColumn(type) {
var armourTable = document.getElementById("armourTable");
var armourForm = document.getElementById("armourForm");
var resetBtn = document.getElementById("resetBtn");
if (type == 0) {
armourTable.style.display = "block";
armourForm.style.display = "none";
resetBtn.style.display = "inline-block";
}
else {
armourForm.style.display = "block";
armourTable.style.display = "none";
setSlider("physical");
setSlider("magic");
if (type == 2) {
resetBtn.style.display = "none";
}
}
} // ToggleColumn()
Solution
I modified it and also add some js codes to implement your needs, you can refer to the below codes:
Armor.cshtml
@page
@model LastTemple.Pages.Create.ArmourModel
@{ }
<p class="text-center font-weight-bold mb-2">Zarządzaj pancerzami</p>
<div class="row">
<div class="col-5 p-1">
<img src="~/img/armor.png" class="img-thumbnail-dark" />
</div>
<div class="col-7 pl-5 pr-5">
<div id="armourTable" class="text-center">
<button class="btn btn-outline-light mb-2" onclick="ToggleColumn(1)">Stwórz pancerz</button>
<table class="table text-light text-center">
<thead>
<tr>
<th scope="col">Id</th>
<th scope="col">Nazwa</th>
<th scope="col">Odp. fiz.</th>
<th scope="col">Odp. mag.</th>
<th scope="col"></th>
<th scope="col"></th>
</tr>
</thead>
<tbody>
@foreach (var item in Model.Armors)
{
<tr id="tr-@item.Id">
<th scope="row">@item.Id</th>
<td>@item.Name</td>
<td>@item.DamageResistance</td>
<td>@item.MagicResistance</td>
<td><button class="btn btn-outline-warning" name="edit" type="submit" onclick="ToggleColumn(2)">Edytuj</button></td>
<td><form method="post"><button class="btn btn-outline-warning" type="submit" asp-page-handler="Delete" asp-route-id="@item.Id">Usuń</button></form></td>
</tr>
}
</tbody>
</table>
</div>
<div id="armourForm" style="display:none" class="p-5">
<form id="manipulateArmor" method="post" onreset="resetSliders()">
<input type="hidden" id="id" asp-for="Armor.Id" />
<div class="form-group">
<label>Nazwa</label>
<input type="text" id="nazwa" class="form-control bg-secondary text-light" minlength="5" maxlength="20" required="required" asp-for="Armor.Name" />
<small>Długość od 5 do 20 znaków</small>
</div>
<div class="form-group">
<label>Odporność na obrażenia</label>
<input id="physical" class="mySlider" type="range" value="10" min="0" max="100" step="5" asp-for="Armor.DamageResistance" />
<output>10</output>
</div>
<div class="form-text">
<label>Odporność na magię</label>
<input id="magic" class="mySlider" type="range" value="10" min="0" max="50" step="5" asp-for="Armor.MagicResistance" />
<output>10</output>
</div>
<div class="text-center">
<button id="createBtn" type="submit" asp-page-handler="Create" class="btn btn-outline-success m-2">Zapisz</button>
<button id="editBtn" type="submit" asp-page-handler="Update" class="btn btn-outline-success m-2">Edytować</button>
<button id="resetBtn" type="reset" class="btn btn-outline-warning m-2">Resetuj</button>
<button type="button" class="btn btn-outline-danger m-2" onclick="ToggleColumn(0)">Anuluj</button>
</div>
</form>
</div>
</div>
@section scripts{
<script type="text/javascript">
var form = document.getElementById("manipulateArmor");
loadSettings();
document.getElementById("physical").oninput = function () { setSlider("physical"); }
document.getElementById("magic").oninput = function () { setSlider("magic"); }
function loadSettings() {
setSlider("physical");
setSlider("magic");
ToggleColumn(0);
}
function resetSliders() {
window.requestAnimationFrame(function (timestamp) {
setSlider("physical");
setSlider("magic");
})
}
function setSlider(type) {
var slider = document.getElementById(type)
var value = (slider.value - slider.min) / (slider.max - slider.min) * 100
if (slider == null) {
alert("slider is null");
}
if (type == "physical") {
slider.style.background = 'linear-gradient(to right, #FF6B6B 0%, #FF0000 ' + value + '%, #000 ' + value + '%, black 100%)'
}
else {
slider.style.background = 'linear-gradient(to right, #0000FF 0%, #6600CC ' + value + '%, #000 ' + value + '%, black 100%)'
}
slider.nextElementSibling.value = slider.value
};
function ToggleColumn(type) {
var armourTable = document.getElementById("armourTable");
var armourForm = document.getElementById("armourForm");
var resetBtn = document.getElementById("resetBtn");
var createBtn = document.getElementById("createBtn");
var editBtn = document.getElementById("editBtn");
if (type == 0) {
armourTable.style.display = "block";
armourForm.style.display = "none";
editBtn.style.display = "none";
resetBtn.style.display = "inline-block";
}
else {
armourForm.style.display = "block";
armourTable.style.display = "none";
setSlider("physical");
setSlider("magic");
if (type == 2) {
var x = event.srcElement.parentElement.parentElement;
var id = x.children[0].innerHTML;
var name = x.children[1].innerHTML;
$("#id").val(id);
$("#nazwa").val(name);
editBtn.style.display ="inline-block"
resetBtn.style.display = "none";
createBtn.style.display = "none";
} else {
editBtn.style.display = "none";
resetBtn.style.display = "inline-block";
createBtn.style.display = "inline-block";
}
}
}
</script>
}
</div>
Update function:
public async Task<IActionResult> OnPostUpdateAsync()
{
var target = _ctx.Armors.Find(Armor.Id);
if (target == null)
{
return RedirectToPage("Armor");
}
target.Name = Armor.Name;
target.DamageResistance = Armor.DamageResistance;
target.MagicResistance = Armor.MagicResistance;
await _ctx.SaveChangesAsync();
return RedirectToPage("Armor");
}
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