nginx add headers when returning 400 codes

Question

I'm developing an ember.js app with a laravel backend. I'm trying to return http error codes with php if something goes awry. I've noticed that when issue a PUT request and return a 400 status code, my CORS headers get ignored by my conf file which breaks my ember frontend. I have no idea why the PUT/400 code combo makes nginx ignore my conf. Any help would be much appreciated. ``` server { listen *:80 ; server_name userchamp.com; access_log /var/log/nginx/embertest.com.access.log; location / { root /var/www/embertest/public; try_files $uri $uri/ /index.php?$args ; index index.html index.htm index.php; } location ~ \.php$ { if ($request_method = 'OPTIONS') { add_header 'Access-Control-Allow-Origin' '*'; add_header 'Access-Control-Allow-Credentials' 'true'; add_header 'Access-Control-Allow-Methods' 'GET, POST, PUT, DELETE, OPTIONS'; add_header 'Access-Control-Allow-Headers' 'DNT,X-Mx-ReqToken,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type'; add_head…

Accepted Answer

For nginx >= 1.7.5

Append "always" to the header definition:

```
add_header 'Access-Control-Allow-Origin' '*' always;
```

For nginx < 1.7.5

According to the nginx official document of ngx_header_module, the `add_header` can't work when response code is 400

```
syntax:     add_header name value;
default:    —
context:    http, server, location, if in location

Adds the specified field to a response header provided that the response code equals 
200, 201, 204, 206, 301, 302, 303, 304, or 307. A value can contain variables.
```

In another way, you can try the HttpHeadersMoreModule, which is more powerful.

nginx add headers when returning 400 codes

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