Databases
StackOverflow2013
Postsdbo
POHow to allow CORS?
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POHow to allow CORS?
    primarykey
    data
    text
    <p>I am trying to support CORS in my Node.js application that uses the Express.js web framework. I have read <a href="http://groups.google.com/group/express-js/browse_thread/thread/71db58df2c74d06a" rel="noreferrer">a Google group discussion</a> about how to handle this, and read a few articles about how CORS works. First, I did this (code is written in CoffeeScript syntax):</p> <pre><code>app.options "*", (req, res) -&gt; res.header 'Access-Control-Allow-Origin', '*' res.header 'Access-Control-Allow-Credentials', true # try: 'POST, GET, PUT, DELETE, OPTIONS' res.header 'Access-Control-Allow-Methods', 'GET, OPTIONS' # try: 'X-Requested-With, X-HTTP-Method-Override, Content-Type, Accept' res.header 'Access-Control-Allow-Headers', 'Content-Type' # ... </code></pre> <p>It doesn't seem to work. It seems like my browser (Chrome) is not sending the initial OPTIONS request. When I just updated the block for the resource I need to submit a cross-origin GET request to:</p> <pre><code>app.get "/somethingelse", (req, res) -&gt; # ... res.header 'Access-Control-Allow-Origin', '*' res.header 'Access-Control-Allow-Credentials', true res.header 'Access-Control-Allow-Methods', 'POST, GET, PUT, DELETE, OPTIONS' res.header 'Access-Control-Allow-Headers', 'Content-Type' # ... </code></pre> <p>It works (in Chrome). This also works in Safari.</p> <p>I have read that...</p> <blockquote> <p>In a browser implementing CORS, each cross-origin GET or POST request is preceded by an OPTIONS request that checks whether the GET or POST is OK.</p> </blockquote> <p>So my main question is, how come this doesn't seem to happen in my case? Why isn't my app.options block called? Why do I need to set the headers in my main app.get block?</p>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USMiles Rout
    1. USmikong
    plurals
    1. This table or related slice is empty.
    1. PL
      singulars
      1. LTLinked
    2. PL
      singulars
      1. LTLinked
    3. PL
      singulars
      1. LTLinked
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    2. PO
      singulars
      1. PTAnswer
    3. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POHow to allow CORS?
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. POHow to allow CORS?
      1. USwinladen
      1. VTFavorite
    3. VO
      singulars
      1. POHow to allow CORS?
      1. USWilliam
      1. VTFavorite
    1. This table or related slice is empty.
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload