Get Webresource content from JavaScript

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Posted on by Raffaele Costanzo

Hello there,

I have a button on a ribbon which generates an eml file and downloads it. The goal is to generate an e-mail template based on field values, entity status, etc.

The e-mail templates I have to use are long formatted text, with different fonts, colors, etc., so I put them in different html webresources.

In my JavaScript function "generateEml", I compose the eml file, and I have to get the content of an html webresource, but I'm unable to do it.

Here's the function:

function generateEml(object, emailBody, id) {
const emailTo = ""
let emlCont = 'To: ' + emailTo + '\n'

emlCont += 'Subject: ' + object + '\n'
emlCont += 'X-Unsent: 1' + '\n'

emlCont += 'Content-Type: text/html' + '\n'
emlCont += '\n'

emlCont += "<!DOCTYPE html>" + emailBody
console.log(emailBody)

let textFile = null
const data = new Blob([emlCont], { type: 'text/plain' })
if (textFile !== null) window.URL.revokeObjectURL(textFile)

textFile = window.URL.createObjectURL(data)

const a = document.createElement('a')
const linkText = document.createTextNode(id)
a.appendChild(linkText)

a.href = textFile

a.id = id
a.download = object + ".eml"
a.style.visibility = "hidden"

document.body.appendChild(a)

document.getElementById(id).click()
}

For example if I call generateEml("Greetings", "<html><head></head><body>Hey there, my name is Raffaele</body></html>", 1), it works.

What I have to do is something like:

const emailTemplate = getContentFromWebresource("../html/templates/greetingTemplate.html")

generateEml("Greetings", emailTemplate, 1)

I didn't find any supported way to do that...

Thank you

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Verified answer

Guido Preite 54,086 Moderator on at

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RE: Get Webresource content from JavaScript

so you are looking at the code for the function called getContentFromWebresource right?

you can't do a retrieve but a retrieve multiple as you are looking for the name,

the code will be something like

fetch(Xrm.Utility.getGlobalContext().getClientUrl() "/api/data/v9.2/webresourceset?$select=content,name&$filter=contains(name,'[NAME OF THE WEB RESOURCE HERE]')", { method: "GET", headers: { "OData-MaxVersion": "4.0", "OData-Version": "4.0", "Content-Type": "application/json; charset=utf-8", "Accept": "application/json", "Prefer": "odata.include-annotations=*" } }).then( function success(response) { return response.json().then((json) => { if (response.ok) { return [response, json]; } else { throw json.error; } }); } ).then(function (responseObjects) { var response = responseObjects[0]; var responseBody = responseObjects[1]; var results = responseBody; console.log(results); for (var i = 0; i < results.value.length; i ) { var result = results.value[i]; // Columns var webresourceid = result["webresourceid"]; // Guid var content = result["content"]; // Text var name = result["name"]; // Text } }).catch(function (error) { console.log(error.message); });

and the content field contains the base64 encoded text, that you need to decode

hope it helps

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Raffaele Costanzo 10 on at

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RE: Get Webresource content from JavaScript

Thank you, it works!

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