I currently have a MongoDB database containing documents with 'img' values structured as follows:
"img": "../folder/img.jpg"
Would it be feasible to utilize this string in my CSS for modifying the background image? This is essential because I need the image to dynamically change along with other attributes specified in the JSON document.
If you're wondering how to set a background image in HTML after retrieving the image string from MongoDB:
If you're unable to dynamically generate your CSS, you can directly apply the background image to your HTML element like this during the page building process:
<!-- Element that requires a dynamic background image, such as a div -->
<div style="background-image: url('../folder/img.jpg');">
</div>
If you're able to dynamically generate your CSS file or style tag, then you can achieve it like this
CSS
#myelement{
background-image: url('../folder/img.jpg');
}
HTML
<div id="myelement">
</div>
Set up a route to deliver dynamic CSS:
example.com/myuser/mycss/1
Implement logic to generate your CSS based on MongoDB data:
function mycss(req, res) {
MyImgs..find({
where: {
_id: req.params.id
}
}).then(function(singleDoc){
var cssContent = ' #myimg {background-image: url('+singleDoc.img+'); }';
res.contentType('text/css');
return res.end(cssContent);
});
}
This is an example of a controller action using Node.js / Express.
In the head section of your HTML, you can include something like this:
<head>
<link type="text/css" src="example.com/myuser/mycss/1" />
</head>
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