Simply go to your Component.js file and add this line to the init function:
this.getModel().setHeaders({"myCustomParameter": "test"})
In a CAP Backend, you get this parameter from the express req object, which can be accessed via the req.http property:
req.http.req.headers['myCustomParameter']
And here is a nice code snippet, on how to read this header parameter in an ABAP system: https://answers.sap.com/answers/425621/view.html
If you are using the Launchpad Sandbox in your CAP project (like it is done here or here) and you want to change the logo in the header bar, simply add this little CSS snippet in the launchpad.html file:
<style>
#shell-header-icon {
content: url("./logo.png");
}
</style>
Of course you could also provide a base64 encoded image:
<style>
#shell-header-icon {
content: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAGGoAAAVNCAYAAAAIhfswAA...);
}
</style>
https://github.github.io/fetch/#Headers
const response = await fetch("https://example.com/api")
for (const [key, value] of response.headers) {
console.log(key, value)
}
An alternative would be forEach()
response.headers.forEach((value, key) => {
console.log(value, key)
})
Or using the entries() iterator (ES8)
const headerIterator = response.headers.entries()
console.log(headerIterator.next().value)
console.log(headerIterator.next().value)
To add a new header just use set()
response.set(key, value)
DATA: o_salv TYPE REF TO cl_salv_table.
cl_salv_table=>factory( IMPORTING r_salv_table = o_salv
CHANGING t_table = l_lines ).
LOOP AT o_salv->get_columns( )->get( ) REFERENCE INTO DATA(l_column).
DATA(lo_column) = CAST cl_salv_column( l_column->r_column ).
lo_column->set_fixed_header_text( 'L' ).
ENDLOOP.
o_salv->get_columns( )->get_column( 'TEST1' )->set_long_text( 'Test1 Header' ).
o_salv->get_columns( )->get_column( 'TEST2' )->set_long_text( 'Test2 Header' ).