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In my Ruby on Rails application I am trying to allow the user to choose their colour and have this as the sites background.
In my schema I have this preferences table:
create_table "perferences", force: :cascade do |t|
t.integer "user_id"
t.integer "category_id"
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
t.text "colour"
end
The CSS background colour is in the following line:
body{line-height:1;height:100%;width:100%;color:#B2BFCB;background:#002952;text-align:center;font-family:"Apercu Regular", Calibri, sans-serif;font-weight:normal;font-style:normal;margin:0;padding:0;}
But I am unsure as to how to update the colour based upon the colour in the database.
I have tried to follow this link: http://blog.hasmanythrough.com/2007/10/18/simpler-than-dirt-restful-dynamic-css
But I got the error: undefined method formatted_colour_path for #<#<Class:0x6daa0a8>:0x6881b98>
In the view:
In the perferences controller:
def show
@colour = Perference.find_by(user_id: session[:user_id]).colour
respond_to do |format|
format.html
format.css
end
end
Can someone please help. I understand that I need to retrieve the colour from the database and then use this to update the CSS, but I am not sure how to do this.
If you try to change the body background color, then try this:
<body style="background-color: <%= @colour %>">
</body>
But it will make some consequences for you and you will need to go deeper :)
It will be better to do it this way
<body style="background-color: <%= @colour if @colour %>" >
</body>
or just write a helper.
179
The css file is fixed - you cannot put ruby code inside. An alternative is to do something inline in your application.html.erb:
<body style="background-color:<%= current_user.preference.color">
</body>
This of course suppose that the user is always loaded in the "current_user" variable (you can use a condition to treat the "not logged in" case).
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