This theme component is no longer maintained. See below for more information
Alternatives include Advanced Header Search and Advanced Search Banner
Repository: GitHub - paviliondev/discourse-header-search-theme · GitHub
This is a re-packaging of the Header Search Plugin so it can be used as a theme.
The functionality is the same as the plugin.
See further:
Qual versão do Discourse suporta este tema?
Ainda estou na v 1.9.0.beta4 e este tema não funciona devido às APIs (versão não suportada):
Se a intenção for que este tema funcione apenas a partir da v 1.9.0.beta5 ou superior, por favor, adicione essa informação ao OP. 
Aliás, alterar o script de version='0.8.9' para version='0.8' funciona, pelo menos na beta 4.
Olá @angus, descobri que meu fórum não carrega no Internet Explorer (funciona no Firefox, Chrome, Opera e Edge).
Depois de muita reconstrução, percebi que o problema parece vir deste tema.
Quando o desativo do meu tema padrão, o fórum carrega normalmente.
IE still doesn’t support Object.keys? Ok I’m downloading a few IE vms to do some more thorough testing…
@Trash @bombledmonk Fixed for IE 11 
Note: To test Discourse on IE on Mac:
localhost:3000 on the host (i.e. your normal browser).http://10.0.2.2:3000/ and your local instance will load.There’s no need to edit the C:\windows\system32\drivers\etc\hosts file on the guest.
Thank you master , it works now on Windows.
I was wondering if it would be possible to make the search bar be on the right, beside the hamburger menu, instead of having it beside the icon?
It’s not possible to use settings in a theme, so you will need to apply css via the site customizer or fork the theme. It should be doable with css. I can take a look at what css would be required on Sunday, unless you want to take a look sooner.
A little late, but here’s the css if you want the search bar to appear on the right of the header instead of the left. Add it in Admin > Customize.
.header-search-enabled .contents {
display: flex;
justify-content: space-between;
&:before, &:after {
display: none;
}
.title {
flex: 1 1 auto;
}
.search-header {
float: right;
margin-left: 0;
margin-right: 10px;
}
.search-input {
float: right;
margin-left: 10px;
margin-right: 0;
}
.search-context {
padding-top: 5px;
float: right;
}
.results {
right: 0;
}
}
You’ll, need to update to the latest for it to work properly.
The same CSS will also work for the Header Search Plugin.
@angus, o ícone de pesquisa é visível quando você abre o site (mesmo que não funcione) e desaparece ao abrir um tópico ou clicar na barra de pesquisa no cabeçalho.
Parece que eu me lembro que isso também acontecia no plugin e você já havia feito uma correção.
hm. I did apply the same fix to the theme at the time.
Are you sure your theme is up to date?
I’m using the theme in my sandbox and it seems to be working ok.
Does it always happen, or only sometimes?
Oh damn, you are right.
I never remember that the themes should be updated manually…my bad 
If you have the header search bar up and slowly shrink the width of the browser, there will come a point where the hamburger menu is moved above the user avatar if the search bar is aligned right:
The theme automatically hides the search bar when the header becomes too small to contain it + the logo + the right icons. I had to increase the absolute width of the search bar to properly handle right alignment which threw that calculation off. The search bar should now disappear and the search icon re-appear in that scenario.
I’ve tweaked the size calculation logic here so that you can arbitrarily set the width of the header-search using css and the show hide behaviour will respond accordingly. This helps those with wide site logos.
The default width of the search-header contains, which holds both the search input and the contextual search options, is 600px.
This was an issue for sites with wide logos, as there wasn’t enough space to fit the element comfortably (particularly with the sign up / login buttons on the right).
Now you can add something like this to your custom css.
div.search-header {
width: 400px;
}
And that new size will be factored into the calculation that determines whether to show / hide the search input when the window is resized.
Thank you so much @angus, works like a charm! 
Fixed: Style tweaks · paviliondev/discourse-header-search-theme@ab51e85 · GitHub
I’ve made a slight change to the right alignment css, so please re-copy / paste that.
When in a topic, scrolling down until the search icon appears, clicking it and scrolling back up will make it so that there are two search bars on the screen at the same time. (Some times there’s a delay before the header search bar appears)
I think I did that part of that intentionally, the idea being that if you have one search open already, it would be jarring to have the search input suddenly jump to the header if you happened to scroll up. But it seems to be working imperfectly. I’ll take a look tomorrow.
