I'm using asset pipeline in Grails 2.5.x. I'm put the img folder which contains images into asset folder.
However in js file, I cannot use <assets:image tag in the image path.
For example:
controlHTML: '<img src="../img/up.png" style="width:40px; height:40px" />'
I can get to the path but in web inspect element, the path is incorrect: 'localhost:9090/CardReg/img/up.png'
Error when I put
controlHTML: '<img src="<asset:image src='../img/up.png'/>" style="width:40px; height:40px" />'
Any ideas?
Any solutions will be appreciated. Thanks you.
Grails tags are not usable from within a .js context. Only from within a .gsp
I would recommend putting
<asset:script>
var contextPath = "${request.contextPath}";
</asset:script>
In your main gsp layout file, and then from your js you can reference images via
var myImage = contextPath + "/assets/myImage.jpg"
I also recommend practicing smart javascript, so you might want to put any of these layout variables declared into an object to act as a namespace.
Also make sure that the script block is the very first script imported.
Related
I have an R markdown document which is created using a shiny app, saved as a HTML. I have inserted a logo in the top right hand corner of the output, which has been done using the following code:
<script>
$(document).ready(function() {
$head = $('#header');
$head.prepend('<img src=\"FILEPATH/logo.png\" style=\"float: right;padding-right:10px;height:125px;width:250px\"/>')
});
</script>
However, when I save the HTML output and share the output, of course the user cannot see the logo since the code is trying to find a file path which will not exist on their computer.
So, my question is - is there a way to include the logo in the output without the use of file paths? Ideally I don't want to upload the image to the web, and change the source to a web address.
You can encode an image file to a data URI with knitr::image_uri. If you want to add it in your document, you can add the html code produced by the following command in your header instead of your script:
htmltools::img(src = knitr::image_uri("FILEPATH/logo.png"),
alt = 'logo',
style = 'float: right;padding-right:10px;height:125px;width:250px')
I'm building a Rails app, but I'm using a plugin in which I have to render my images using only html.
Since I haven't deployed yet, all my images are in RAILS_ROOT/app/assets/images/, so to render an image I have to write the following code:
<img src="/assets/image.jpg">
But when I'm ready to deploy to the web and I perform a precompile, all my images are supposedly going to be moved to my public folder. Will the html still work to link to the image, or will I have to change to link to a different path?
The plugin I'm using is Typeahead:
application.html.erb*
<script type="text/javascript">
//....
$('#typeahead').typeahead(null, {
maxLength: 5,
displayKey: function(thing) {
return "<div class='typeahead'><img src='" + thing.image_url + "'></div>";
},
source: bloodhound.ttAdapter(),
});
</script>
things_controller.rb
def typeahead
#render json: Thing.where(name: params[:query])
q = params[:query]
render json: Thing.where('name LIKE ?', "%#{q}%")
end
*Thing.image_tag is currently set to "/assets/[image.jpg]", except for each thing it's adjusted with the proper file name.
Not only are they going to be in the public folder, but they'll be renamed to include the fingerprint.
You must use the Rails helpers for all assets, see how to here and read the rest of the guide while you're at it :)
I think you should use non-stupid-digest-assets gem as it copies all your assets(mentioned in assets precompile list) in public/assets folder and then you need not to change your code before/after compiling.To install, you just need to add it into your Gemfile.
gem 'non-stupid-digest-assets'
I hope it might help you.
Joe, my suggestion would be to create a directory in your public folder to house your images, instead us using the app/assets directory. The public folder will allow the assets to not be altered by the rails pipeline, and you can link to them reliably using any external services that need the images.
As stated in RailsGuides:
Assets can still be placed in the public hierarchy. Any assets under
public will be served as static files by the application or web server
when config.serve_static_files is set to true. You should use
app/assets for files that must undergo some pre-processing before they
are served.
So you would need to add this line in config/application.rb
config.serve_static_files = true
As described in Rails general configuration.
It looks like you're storing your image_url in your model, and that's not working because assets don't have fixed URLs in Rails. I would override the getter in your model to use the asset_path helper, so it translates the path when that attribute is read (e.g., when the JSON is generated).
Something like:
# thing.rb
[...]
def image_url
ActionController::Base.helpers.asset_path(read_attribute(:image_url))
end
[...]
Short answer, no.
But it isn't that big a deal to remedy. Just move the images you need to reference with html into your Public folder. Then you can simply reference them with this code:
<img src="/image_name.image_type">
and the html will link to the correct path, both before and after precompile. So you don't have to change any code before you deploy.
BTW: I assume image_tag and image_url are the same column and you just made a mistake in one of the two times you mentioned it. If that's the case, then don't forget to change it to simply "/[image.jpg]".
I put the user uploaded image files on separate disk partition on my local dev server(OS windows) which is outside of project folder. I need to access those image files in html pages of web app.
I tried out giving paths like: http://localhost:8080/C://tmp/thumbnails/pl_2001.JPEG but no help. Image is not fetched. How to properly access such files in html pages ?
You will have to use rewrites for this so you don't display sensitive folder names.
if you are using php you can use .htaccess rewrites for a slug something like images/someimage.mime and split/get what's after images/ and have a php function that takes the filename and makes sure it exists and if you want you can check if its a valid mime then send a header to say its a image/somemime so the browser can display the image instead of gibberish it will display without it.
$filename = "C://tmp/" . $file;
if(file_exists($filename)){
$img = getimagesize($filename);
if(in_array($img['mime'], array('jpg','jpeg','gif','png','etc'))){
header("Content-type: image/" . $img['mime']);
readfile($filename);
}else{
//default image
}
}else{
//default image
}
I haven't tested this but it should give you a idea on getting you started. If this isn't the language you are looking for try searching for something similar for your language you are using.
I am bound to provide a full URL : www.abc.com/folder1/folder2/my.xml rathar than just giving relative URL "./my.xml" .
How can i solve this ? This forces me to hardcode the URL inside the .as file .
I can't understand what you actually need: relative or absolute URL?
If relative, use it. Just consider that it should be relevant to the HTML wrapper, not the SWF itself.
If absolute and you just do not want to embed it into the code, pass it to your SWF from the HTML wrapper using FlashVars.
You can use a relative url in the flash, and the fact that it's working when you test locally indicates a problem with the embed. My guess is that you have placed the swf in a subfolder from the html page but not specified a base url when embedding the swf. Is the swf file located in www.abc.com/folder1/folder2/ or any other folder other than the html itself?
If so, you need to tell the flash player which url all relative url:s in the flash should use as a starting point. This is done using the "base" parameter. If you embed the swf using SWFObject you specify it with an object with a base property:
var flashvars = {
};
var params = {
base: "/folder1/folder2/"
};
var attributes = {
};
swfobject.embedSWF("myContent.swf", "myContent", "300", "120", "9.0.0","expressInstall.swf", flashvars, params, attributes);
Note that I assumed that the .swf is in folder2/ in the example above.
Hope this solves your problem.
I'm working with evernote api on iOS, and want to translate enml to html. How to translate en-media to img? for example:
en-media:
<en-media type="image/jpeg" width="1200" hash="317ba2d234cd395150f2789cd574c722" height="1600" />
img:
<img src="imagePath"/>
I use core data to save information on iOS. So I can't give the local path of img file to "src = ". How to deal with this problem?
The simplest way is embedding image data using Data URI:
Find a Evernote Resource associated with this hash code.
Build the following Data URI (sorry for Java syntax, I'm not very familiar with Objective C):
String imgUrl = "data:" + resource.getMime() + ";base64," + java.util.prefs.Base64.byteArrayToBase64(resource.getData().getBody());
Create HTML img tag using imgUrl from (2).
Note: the following solution will allow you to display the image outside of the note's content.
On this page, you'll find the following url template:
https://host.evernote.com/shard/shardId/res/GUID
First compile the url from some variables, then point the html image src = the url.
In ruby, you might compile the url with a method similar to this one:
def resource_url
"https://#{EVERNOTE_HOST}/shard/#{self.note.notebook.user.evernote_shard_id}/res/#{self.evernote_id}"
end
...where self references the resource, EVERNOTE_HOST is equivalent to the host url (i.e. sandbox.evernote.com), evernote_shard_id is the user's shardId, and evernote_id is the user's guid.