I have an image field in Sitecore from which I need its url. In code behind I have one item:
Item contactSlide = itemHelper.GetItemByPath("/sitecore/content/AMM/Resources/Slides/Slide Contact");
In the .ascx it looks like this:
<div class="contact-section grid-padding-big" style="background-image: url(img/bg.jpg)">
I need to replace img/bg.jpg with the url of the image field of the item.
In repeaters I normally have a method in the code behind for this:
public string GetImageUrl(Item item)
{
Sitecore.Data.Fields.ImageField imgField = ((Sitecore.Data.Fields.ImageField)item.Fields["Bild"]);
if (imgField.MediaItem != null)
{
string mediaUrl = Sitecore.Resources.Media.MediaManager.GetMediaUrl(imgField.MediaItem);
return mediaUrl;
}
return "";
}
And in the .ascx I call it like this:
<div style="background-image:url(<%# GetImageUrl((Sitecore.Data.Items.Item) Container.DataItem) %>)"></div>
This works when using this method while in repeaters. But now I have a single item. How can I pass the item to the method to get its image url? Or is there another way to do this?
You can use code in a .ascx within <%= and %>, so you could simply do this:
<div style="background-image:url(<%= GetImageUrl(itemHelper.GetItemByPath("/sitecore/content/AMM/Resources/Slides/Slide Contact")) %>)"></div>
You can also define a method in your code behind to directly get the url from the item you have already resolved:
public string GetBackgroundImageUrl()
{
Item contactSlide = itemHelper.GetItemByPath("/sitecore/content/AMM/Resources/Slides/Slide Contact");
return this.GetImageUrl(contactSlide);
}
And call this in the .ascx:
<div style="background-image:url(<%= GetBackgroundImageUrl() %>)"></div>
Related
I'm trying to figure out how to pass a value from my .ss page to my controller for a custom search filter that I've built. The idea is you click on this image or a form button and then the page will set a session variable and refresh itself. Upon page load the page loads different information depending on what it reads in the session variable. I can accomplish the same thing with URL Parameters but there are no examples online that I could find that would show me how to do this.
Basically I have this as my php:
class ArticleHolder_Controller extends Page_Controller {
public function ValidateType(){
if(isset($_SESSION['mySearchTag']) && !empty($_SESSION['mySearchTag'])) {
$tag = $_SESSION['mySearchTag'];
}
else{
$tag='News';
}
$filter = $this::get()->filter('Filters:PartialMatch', $tag)->First();
if ($filter == NULL){
return NULL;
}
else{
$_SESSION['mySearchTag']=$tag;
return $this->PaginatedPages();
}
}
public function PaginatedPages(){
$paginatedItems = new PaginatedList($this->filterArticles($_SESSION['mySearchTag']), $this->request);
$paginatedItems->setPageLength(3);
return $paginatedItems;
}
public function filterArticles($tag){
return ArticlePage::get()->filter('category:PartialMatch', $tag)->sort('Date DESC');
}
}
my .ss looks like this:
<% if ValidateType() %>
<ul>
<% loop $PaginatedPages %>
<li>
<div class="article">
<h2>$Title</h2>
<h3>$Date</h3>
<img class="indent" src="$Photo.link" alt="image"/>
<p class="indent">$Teaser</p>
</div>
</li>
<% end_loop %>
</ul>
<% include Pagination %>
<% else %>
<p>SORRY NO RESULTS WERE FOUND</p>
<% end_if %>
This code works as is. What I cannot figure out how to now add a clickable button on .ss page that will reload the page and set a session variable value.
If I can achieve this with url parameters then that can work too, I just need to know how to set them in the .ss page and how to retrieve them in the php.
Create a SetFilter function that will take the URL parameter ID and set it to your session variable:
public function SetFilter() {
if($this->request->param('ID')) {
$_SESSION['mySearchTag'] = $this->request->param('ID');
}
return array();
}
Make sure your SetFilter function is added to the $allowed_actions of your controller:
static $allowed_actions = array (
'SetFilter'
);
This function is called by your page link followed by /SetFilter/[your-filter].
In your template you would create a link to create this filter like so:
Filter articles by example
I'm trying to render different partial views from the _Layout file depending on what function I'm in, controller-wise.
The partial view is in the right column of the website which is located in the _Layout like so:
<aside id="right">
#Html.Partial("RightPartial")
</aside>
What I want to do is render a different partial view depending on where I am.
If I'm in the Index view I might want to view news and in the About view I might want to view phone numbers or something.
Appreciate any help :)
#{
string currentAction = ViewContext.RouteData.GetRequiredString("action");
string currentController = ViewContext.RouteData.GetRequiredString("controller");
}
Now based on the values of those variables decide which partial to render. To avoid polluting the Layout I would write a custom HTML helper:
<aside id="right">
#Html.RightPartial()
</aside>
which might look like this:
public static class HtmlExtensions
{
public static IHtmlString RightPartial(this HtmlHelper html)
{
var routeData = html.ViewContext.RouteData;
string currentAction = routeData.GetRequiredString("action");
if (currentAction == "Index")
{
return html.Partial("IndexPartialView");
}
else if (currentAction == "About")
{
return html.Partial("AboutPartialView");
}
return html.Partial("SomeDefaultPartialView");
}
}
I've got a view that displays a list of items. Rather than display items in a grid, I'd like to display 4 items per page, each with an image and multiple properties, displayed in a unique layout.
So, I'd like a foreach to iterate through the items, and each item to get displayed in a div. I could put all the code in the loop, but I'd like to have a custom html helper extension to do this.
I came up with this,
public static MvcHtmlString DisplayViewerFor(this HtmlHelper helper, TestModel model, bool rightAligned = true) {
if (model == null) {
model = new TestModel();
}
var outterDiv = new TagBuilder("div");
outterDiv.AddCssClass(rightAligned ? "item-display-right" : "item-display");
var image = new TagBuilder("image");
image.Attributes.Add("src", "Item/GetImage/" + model.ItemName);
image.Attributes.Add("height", "150");
var editorLabel = new TagBuilder("div");
editorLabel.AddCssClass("editor-label");
//LOOKING TO ADD CODE LIKE THIS HERE
var labelContent= html.LabelFor({my model property here})
editorLabel.InnerHtml += labelContent;
//END OF ADD
return new MvcHtmlString(outterDiv.ToString(TagRenderMode.EndTag));
}
In my method above, I need to display a few more values, and I would like to use the Html.LabelFor and Html.DisplayFor helpers, but the methods aren't available and I'm not sure what to pass to them if they were.
I'm not sure if this is possible or not, but I thought I would ask.
EDIT
I'm trying to use the html.LabelFor. See my code where I have updated it above, adding to it these two lines.
var labelContent= html.LabelFor({my model property here})
editorLabel.InnerHtml += labelContent;
You can see the code above.
EDIT 2
Here is the planned use for this Helper with dummied down view.
#model TestItemDisplayList
#{
ViewBag.Title = "Items";
Layout = "~/Views/Shared/_Layout.cshtml";
}
#foreach(var item in #model.Items){
#Html.DisplayViewerFor(item)
}
You can use the Html.DisplayFor method to render a DisplayTemplate. One of the over loads for the method is to specify a template to use. You can modify your page code to read:
Page:
#model TestItemDisplayList
#{ ViewBag.Title = "Items"; Layout = "~/Views/Shared/_Layout.cshtml"; }
#Html.DisplayFor(model => Model,"TestItemDisplayList")
Display Template for TestItemDisplayList
#model TestItemDisplayList
#* You could limit this loop to the first 4 items *#
#foreach(var item in model.Items){ #Html.DisplayFor(item => item) }
Display Template for TestModel
#model TestModel
<div class="item-display">
<img src="#Url.Action("GetImage", "Image", new { id = Model.ItemName})" height="150"/>
<div class="editor-label">#Html.LabelFor(model => model.PropertyHere)</div>
</div>
I assume that your URL for the image used the default route of {controller}/{action}/{id} so I used the Url.Action and specified your ID.
You could also get away witout using a DisplayTemplate for "TestItemDisplayList" and moving that code in to your page but I wasn't clear if you wanted to add logic in that to limit the number of pages.
If I am passing HtmlAttributes into a template, like this:
#Html.DisplayFor(m => m.FirstName, new { htmlAttributes = new { #class = "orangetxt strongtxt" } })
In my template, how would I inject these into my HTML:
<span #ViewData["htmlAttributes"]>#Model</span>
This almost works, but it does some pretty weird stuff, so I'm assuming this isn't the way to go.
I realize I can accomplish this with an HtmlHelper extension method to render the full HTML element (span, in this case) and pass in the attributes that way, but is there a way to just render attributes straight into an HTML element, like the above example?
The below extension method will allow me to convert HtmlAttributes to a string:
public static MvcHtmlString RenderHtmlAttributes<TModel>(
this HtmlHelper<TModel> htmlHelper, object htmlAttributes)
{
var attrbituesDictionary = new RouteValueDictionary(htmlAttributes);
return MvcHtmlString.Create(String.Join(" ",
attrbituesDictionary.Select(
item => String.Format("{0}=\"{1}\"", item.Key,
htmlHelper.Encode(item.Value)))));
}
Then, to render them within the tag, I can just do this:
<span #Html.RenderHtmlAttributes(ViewData["htmlAttributes"])>#Model</span>
Jerad Rose's answer is good, but I ran into couple of issues with it:
It does not not convert underscores to dashes in attribute names
It does not handle no-value attributes gracefully
To address first issue, use HtmlHelper.AnonymousObjectToHtmlAttributes.
Below is my modification of Jerad's method:
public static MvcHtmlString RenderHtmlAttributes(this HtmlHelper helper, object htmlAttributes)
{
if (htmlAttributes == null) return new MvcHtmlString(String.Empty);
var attrbituesDictionary = HtmlHelper.AnonymousObjectToHtmlAttributes(htmlAttributes);
return new MvcHtmlString(String.Join(" ", attrbituesDictionary.Select(item => string.IsNullOrEmpty((string)item.Value) ? String.Format("{0}", item.Key) : String.Format("{0}=\"{1}\"", item.Key, helper.Encode(item.Value)))));
}
Try this instead,
#Html.DisplayFor(m => m.FirstName,
new { htmlAttributes = "class = orangetxt strongtxt"})
This will render a string, whereas your version did do weird stuff, rendered { } as part of the output.
DisplayFor() is used to render the template that matches the property type.
Display templates are .cshtml files inside /DisplayTemplates folder which in turn is inside a view folder (i.e. any folder from Home, Shared or even a specific controller).
An example.
If you've a String.cshtml template like this inside /Views/Shared:
#model String
#if (string.IsNullOrEmpty(Model)) {
<span>(no string)</span>
}
else {
<span>#Model</span>
}
Every time you call DisplayFor() for a string property:
DisplayFor(model => model.MyStringProperty);
It renders the template accordingly to the string's value. You can be more specific and put /DisplayTemplates inside a specific View folder and them only calls from those views are affected by the template.
In your case you can be even more specific and call DisplayFor() with a particular template.
Suppose you've a template for a particular property, called MyPropertyTemplate.cshtml. You would call DisplayFor() like this:
DisplayFor(model => model.MyProperty, "MyPropertyTemplate");
And them, inside that template you can have whatever HTML attributes you want.
#model MyProperty
<span class="orangetxt strongtxt">#MyProperty.ToString()</span>
PS: When it doesn't find a template I guess it only calls model.Property.ToString() without additional html.
FYI: EditorFor(), for example, works in a similar way but it uses /EditorTemplates folder.
I have implemented a file upload for images using ASP.NET Mvc 3 and the Microsoft.Web.Helpers NuGet package. The implementation is quit simple as it allows you to browse for a file and upload it to a specified directory.
Here is what I have for my image upload solution using ASP.NET MVC 3 and the Microsoft.Web.Helpers NuGet plugin.
Now the ViewModel code
namespace MvcImageUpload.Models {
public class ImageUploadViewModel {
[UIHint("UploadedImage")]
public string ImageUrl { get; set; }
public string ImageAltText { get; set; }
}
}
Now for the controller I've simply dropped this into the Home controller, since this is just a mock project to get it working. I just added an ActionResult which takes an ImageUploadViewModel as a parameter.
public ActionResult Upload(ImageUploadViewModel model) {
var image = WebImage.GetImageFromRequest();
if (image != null) {
if (image.Width > 500) {
image.Resize(500, ((500 * image.Height) / image.Width));
}
var filename = Path.GetFileName(image.FileName);
image.Save(Path.Combine("../Uploads/Images", filename));
filename = Path.Combine("~/Uploads/Images", filename);
model.ImageUrl = Url.Content(filename);
model.ImageAltText = image.FileName.Substring(0, image.FileName.Length - 4);
}
return View("Index", model);
}
My view for the uploading of images is simple, it has an Html.BeginForm, which handles the Post form method and has the encoding type set to be "multipart/form-data".
Then using The Microsoft.Web.Helpers.FileUpload helper, I request an image from the HTTP post and then display it using a custom DisplayFor template, called ImageViewer.
#model MvcImageUpload.Models.ImageUploadViewModel
#using Microsoft.Web.Helpers;
#{
ViewBag.Title = "Index";
}
<h2>Image Uploader</h2>
#using (Html.BeginForm("Upload", "Home", FormMethod.Post,
new { #encType = "multipart/form-data" })) {
#FileUpload.GetHtml(initialNumberOfFiles: 1, allowMoreFilesToBeAdded: false,
includeFormTag: false, addText: "Add Files", uploadText: "Upload File") <br />
<input type="submit" name="submit"
value="Upload Image" text="Upload Images"
style="font-size: .9em;" />
#Html.DisplayFor(x => x, "ImageViewer")<br />
}
Here is what the custom DisplayTemplate looks like
#model MvcImageUpload.Models.ImageUploadViewModel
#if (Model != null) {
<h4 style="color:Green;">Upload Success!</h4>
<p>
Alt Text has been set to <strong>#Model.ImageAltText</strong>
</p>
<img style="padding: 20px;"
src="#(String.IsNullOrEmpty(Model.ImageUrl) ? "" : Model.ImageUrl)"
id="uploadedImage" alt="#Model.ImageAltText"/>
}
This all works and the image gets successfully uploaded to the /Uploads/Images/FileName.extension on the form post.
My question
How can I now have another view to display all the images in that directory, paged and be able to select and delete and image, from the view and the directory?
Also I know the Microsoft.Web.Helpers.FileUpload, supports uploading of multiple files, but I can't find how to implement this with my current solution. Any help would be greatly appriceated.
After you click the Upload Image button, the system should call method which uses Request to get the file.
[HttpPost]
public ActionResult Upload()
{
if(Request.Files != null && Request.Files.Count > 0)
{
for (int i = 0; i < request.Files.Count; i++)
{
var postFile = request.Files[i];
if (postFile != null && postFile.ContentLength > 0)
{
if (postFile.ContentLength < GetMaxRequestLength()) //10MB
{
var file = new ContractAttachment
{
Name = Path.GetFileName(postFile.FileName),
ContentType = postFile.ContentType,
FileLength = postFile.ContentLength,
FileData = GetStreamBuffer(postFile)
};
files.Add(file);
}
}
}
}
}
Hope this help.
what you are asking about looks rather implementation to me then any query....
to Display:
Fetch all images from your Uploads/Images directory through DirectoryInfo... you can search a directory based on some extension and then it will give you a result set which you can iterate.....
Create a view that will display all records as Image links and in controller fetch the resultset to that View.... Bind those records as you want them to display in your VIEW...
System.IO.DirectoryInfo info = new System.IO.DirectoryInfo("your directory path");
var filesinfo= info.GetFiles("*.jpg", System.IO.SearchOption.AllDirectories);
var filenum= filesinfo.GetEnumerator();
while (filenum.MoveNext())
{
//populate some entity like in your case you have ImageUploadViewModel
}
and you can implement you delete logic using Ajax or through post back depends how you want it....
Asp.net MVC Views following this tutorial and it will let you go through this....
but again what you are asking is more like implementation Code not any issue....
The approach I've followed previously, is to persist the file information in a database(or whatever is appropriate). e.g. path, filename, content-type, filesize.
This gives you the most flexibility when editing (alt text, title, description, relation to other objects).
Downloading/Viewing the files can then be handled based on path convention, by creating a ViewImage controller which just gets an image id as parameter.
You can then build a url from the path to the file and you only need to set the content-type.
IIS then does the rest.