CODEWITHSUNDEEP
ruby-on-railssimple-formsimple-form-for
Pimmesz
Pimmesz

Reputation: 575

How can I set a default image for user in Rails

I am trying to set a default image for users when they sign up. They can change that if they prefer and otherwise a default image will be given. The input_html, however, doesn't seem to work?

How can I set a default image?

Current simple form for input:

<% default_picture = (image_path 'user.png') %>
<%= f.input :avatar, input_html: {value: '#{default_picture}'}, label: false %>

Upvotes: 0

Views: 4961

Answers (2)

fool-dev
fool-dev

Reputation: 7777

You don't need to work with a form of default image when user not uploaded any image. You can just use a static image when user's avatar is empty. Just call out a default image

The right way to the set using user default image, you can create a helper method to any helper file like helpers/application.html.erb

def avatar_for(user)
    @avatar = user.avatar
    if @avatar.empty?
        @avatar_user = image_tag("user.png", alt: user.name)
    else
        @avatar_user = image_tag(@avatar.url, alt: user.name)
    end
    return @avatar_user
end

if user.avatar is empty then it will show the default user.png from assets/images folder otherwise it will show a user's uploaded the image

and put the image user.png to assets/images/ folder

Then you can just callout from .html.erb file like this

<%= avatar_for(current_user) %>
or
<%= avatar_for(@user) %>
#just pass user object from anywhere

Or if you need to show the image with different sizes for a different place then it would be like this 

def avatar_for(user, width = '', height = '')
    @avatar = user.avatar
    if @avatar.empty?
        @avatar_user = image_tag("user.png", alt: user.name, width: width, height: height)
    else
        @avatar_user = image_tag(@avatar.url, alt: user.name, width: width, height: height)
    end
    return @avatar_user
end

Then callout like this

<%= avatar_for(current_user, 100, 100) %>

Or you can use gravatar for default avatar 

def avatar_for(user)
    @avatar = user.avatar
    if @avatar.empty?
        gravatar_id = Digest::MD5::hexdigest(user.email).downcase
        @avatar_user = "https://gravatar.com/avatar/#{gravatar_id}.png"
    else
        @avatar_user = image_tag(@avatar.url, alt: user.name)
    end
    return @avatar_user
end

You can see the full tutorial for generating gravatar avatar image from RailsCast

Upvotes: 1

elgalesmana
elgalesmana

Reputation: 61

you can use before_create in your model, to set the default image.

before_create :set_default_avatar

def set_default_avatar
  # your code
end

and here other discussion regarding about your question, Rails - What is the best way to display default avatar if user doesn't have one?

Upvotes: 3

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