Request is not working on demodb
lazarus / 76-Pas2JS

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mangakissa · 2020-06-17 09:29

On $pas2js/demo/fcldb the're several examples to load data from a
restserver.
I compiled restserver and run it. It opens a console and start the
server on port 3000.
Then I load demodb in Lazarus and compile it with pas2js. After
compiling I start demodb.html in my browser (firefox). It shows a
button wit text 'fetch countries'. But the button doesn't work. I see
nothing in the console of the restserver.

If I do a request in my browser with url
http://localhost:3000/countries the json file is loaded and showed on
screen. That means restserver is running.

Demorest is doing nothing. It doesn't show anything on screen.

'Data Abstract for Pas2JS' works.

How do I get feetback from the restserver?

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mangakissa · 2020-06-17 09:47

This is what webconsole shows when clicking on the button:
QuoteCross-Origin-aanvraag geblokkeerd: de Same Origin Policy staat
het lezen van de externe bron op file:///C:/Users/john/Documents/Lazar
us/projects/pasjs/demo/fcldb/countries.json niet toe. (Reden: CORS-
aanvraag is geen http).

Cross-Origin-request blokked: the Same Origin Policy is not allowed to
load external source on file file:///C:/Users/john/Documents/Lazarus/p
rojects/pasjs/demo/fcldb/countries.json

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mangakissa · 2020-06-17 10:22

changed Code: Pascal  [Select][+][-]window.onload = function(){var x1
= document.getElementById("main_content_section"); if (x1) { var x =
document.getElementsByClassName("geshi");for (var i = 0; i
xhr.open('GET', 'countries.json', true);toCode: Pascal
 [Select][+][-]window.onload = function(){var x1 =
document.getElementById("main_content_section"); if (x1) { var x =
document.getElementsByClassName("geshi");for (var i = 0; i
xhr.open('GET', 'http://localhost:3000/countries/', true); sends a
request to the restserver. But this comes with an errormessage

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PascalDragon · 2020-06-17 11:23

Quote from: mangakissa on June 17, 2020, 11:47:27 amThis is what
webconsole shows when clicking on the button:
QuoteCross-Origin-aanvraag geblokkeerd: de Same Origin Policy staat
het lezen van de externe bron op file:///C:/Users/john/Documents/Lazar
us/projects/pasjs/demo/fcldb/countries.json niet toe. (Reden: CORS-
aanvraag is geen http).

Cross-Origin-request blokked: the Same Origin Policy is not allowed to
load external source on file file:///C:/Users/john/Documents/Lazarus/p
rojects/pasjs/demo/fcldb/countries.json

Ah, right, I have installed myself an addon for my browser to
temporary disable CORS for selected sites (in my case localhost), to
avoid this problem.

Quote from: mangakissa on June 17, 2020, 12:22:30 pmchanged Code:
Pascal  [Select][+][-]window.onload = function(){var x1 =
document.getElementById("main_content_section"); if (x1) { var x =
document.getElementsByClassName("geshi");for (var i = 0; i
xhr.open('GET', 'countries.json', true);toCode: Pascal
 [Select][+][-]window.onload = function(){var x1 =
document.getElementById("main_content_section"); if (x1) { var x =
document.getElementsByClassName("geshi");for (var i = 0; i
xhr.open('GET', 'http://localhost:3000/countries/', true); sends a
request to the restserver. But this comes with an errormessage


Ugh... what could that problem be again?

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mangakissa · 2020-06-17 11:38

There's an atachment with the message.

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PascalDragon · 2020-06-17 13:52

Quote from: mangakissa on June 17, 2020, 01:38:42 pmThere's an
atachment with the message.

Yes, I've seen that. Doesn't change my reply though, cause that was to
that message...