Twitter API Question posted in
The official Twitter API documentation can be found here.

Ruby on Rails: How may create a quoted string to a request header? – Twitter API

I am writing from scratch a Twitter client and one of the requisites is not using Twitter gems, so I must create my own requests.

Twitter API documentation says here that I must have a Authorization header like this:

Authorization:
OAuth oauth_consumer_key="xvz1evFS4wEEPTGEFPHBog",
oauth_nonce="kYjzVBB8Y0ZFabxSWbWovY3uYSQ2pTgmZeNu2VS4cg",
oauth_signature="tnnArxj06cWHq44gCs1OSKk%2FjLY%3D",
oauth_signature_method="HMAC-SHA1",
oauth_timestamp="1318622958",
oauth_token="370773112-GmHxMAgYyLbNEtIKZeRNFsMKPR9EyMZeS9weJAEb",
oauth_version="1.0"

As you may see I must have something like oauth_consumer_key="xvz1evFS4wEEPTGEFPHBog" with the second part in quotes. I tried using %Q like in 

["oauth_consumer_key",%Q( Figaro.env.TWITTER_ACCESS_TOKEN )].join('=')

assuming %Q would return a quoted string. but when I inspect the value, all I get is

oauth_consumer_key=xvz1evFS4wEEPTGEFPHBog

which, obviously, is different from the required result.

What am I missing?

Tags:

2

Answers


  1. 0

    %Q(x) is basically the same as “x”.

    To achieve the desired result you have to manually introduce quotes into %Q expression, like this: %Q("#{Figaro.env.TWITTER_ACCESS_TOKEN}")

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  2. 0

    1. My solution:

    'oauth_consumer_key="#{Figaro.env.TWITTER_ACCESS_TOKEN}"'

    2. Why:

    %Q() basically replaces the variable with double quotes "", it is literally the same as if you wrote "Figaro.env.TWITTER_ACCESS_TOKEN"

    In fact, to display the content of a variable, you have to use interpolation
    instead of the name itself, using "#{var}".

    You can also use %Q directly with interpolation using %Q{var} (note {} instead of ()).

    Your problem is elsewhere: with the join() method. It’s getting rid of double quotes. In that case doing ["var", var].join('=') and ["var", %Q{var}].join('=') ends doing exactly the same thing but more complicated.

    @Artem Ignatiev’s solution should works. But if you need to be more readable, you don’t even need to join, imho, it makes sense only when you are using more than two variables.

    For instance, I will use something like 'oauth_consumer_key="#{var}"' mixing single and double quote to make sure it causes no confusions.

    If you do need to use %Q() and join, you can still use ["oauth_consumer_key", %Q("#{Figaro.env.TWITTER_ACCESS_TOKEN})].join('=').

    • Note that because of the join you can use single quote interpolation %q or double quote interpolation %Q without affecting the ends results:

    e.g

    ['oauth_consumer_key', %q("#{var}")].join('=') == ["oauth_consumer_key", %Q("#{var}")].join('=')
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