Creating action with Magnific Popup to Make Profile Photo Default

Question

I could use help with creating a style sheet to override the default ones from Magnific Popup (https://github.com/joshuajansen/magnific-popup-rails).

I have the code for a user to select their default_profile_id from their uploaded images. The problem I have is I need code that will allow the current user to make that decision from their page. For example the current user hovers over their photo, and the text "Make Profile Photo" appears on it (https://s18.postimg.cc/arl81snll/mouse.jpg). I don't know how to create a style sheet or modify what I do have so that this action can work.

Any help with adding this action to the photos would be much appreciated.

Photos Controller:

 def new 
    @photo = Photo.new
  end

  def create
    @photo = Photo.new(params[:photo])
    @photo.user = current_user
    if @photo.save
      flash[:notice] = "Successfully created photos."
      redirect_to :back
    else
      render :action => 'new'
    end
  end

  def resize(width, height, gravity = 'Center')
    manipulate! do |img|
      img.combine_options do |cmd|
        cmd.resize "#{width}"
        if img[:width] < img[:height]
          cmd.gravity gravity
          cmd.background "rgba(255,255,255,0.0)"
          cmd.extent "#{width}x#{height}"
        end
      end
      img = yield(img) if block_given?
      img
    end
  end
  def edit
    @photo = Photo.find(params[:id])
  end

  def update
    @photo = Photo.find(params[:id])
    if @photo.update_attributes(paramas[:photo])
      flash[:notice] = "Successfully updated photo."
      redirect_to @photo.gallery
    else
      render :action => 'edit'
    end
  end

  def destroy
    @photo = Photo.find(params[:id])
    @photo.destroy
    flash[:notice] = "Successfully destroyed photo."
    redirect_to @photo.gallery
  end

  def choose_default_photo
    @photo = Photo.find params[:photo_id]
    current_user.default_photo = @photo
    redirect_to '/profile' # or wherever I want to send them
  end
end

Photo model:

  attr_accessible :title, :body, :gallery_id, :name, :image, :remote_image_url
  belongs_to :gallery
  has_many :gallery_users, :through => :gallery, :source => :user
  belongs_to :user
  mount_uploader :image, ImageUploader

  LIMIT = 5


  validate do |record|
    record.validate_photo_quota
  end


  def validate_photo_quota
    return unless self.user
    if self.user.photos(:reload).count >= LIMIT
      errors.add(:base, :exceeded_quota)
    end
  end
end

User Model:

  has_many :photos
  belongs_to :default_photo, :class_name => "Photo"
  after_create :setup_gallery

  private
  def setup_gallery
     Gallery.create(user: self)
   end
end

User Controller:

  def new
    @user = User.new
  end

  def show
    @user = User.find(params[:id])
  end

  def destroy
     User.find(id_params).destroy
     flash[:success] = "User deleted."
     redirect_to users_url
   end

    def choose_default_photo
      @photo = Photo.find params[:photo_id]
      current_user.default_photo = @photo
      redirect_to '/profile'
    end

The columns for the photos table are: id, created_at, updated_at, image, name, user_id

Users table has the following related columns: id, default_photo_id (integer)

Answer 1

You can either have two images and swap images when a mouse-over occurs or you can use CSS effects such as :hover and opacity to make the image appear as you like.

Sample CSS showing em, px, and % for a 190x190 pixel image. Sizing and position would need to be adjusted to suite your needs.

/* resize so easier to view */
img.profImg {
    width: 480px;
    /* z-index: 1; */
}
/* all hover items */
.overImg {
  background: #111111;
  color: white;
  opacity: 0.6;
  border-radius: 0.5em;
  width: 190px;
  height: 190px;
  /* z-index: 2; */
}
/* hover effects */
.carImg:hover .overImg  { display:block; }
.carImg .overImg { display:none; }
/* specific to car image, will need to be adjusted */
.car-over-2 {
  position: absolute;
  top: 310px;
  left: 25px;
}
.car-over {
  position: absolute;
  top: 36px;
  left: 25px;
}
/* text near bottom of image */
.overText {
    color: white;
    font-size: 1.1em;
    position: relative;
    top: 85%;
    left: 12.5%;
    z-index: 3;
}
/* X button to close: should use an icon for this */
.closer {
    background-color: white;
    color: black;
    font-size: 0.8em;
    border-radius: 5em;
    padding: 0.2em;
    width: 2em;
    height: 1em;
    position: relative;
    left: 85%;
    top: -8px;
}

Corresponding HTML:

  <a class="carImg">
    <img src="http://s18.postimg.org/arl81snll/mouse.jpg" class="profImg">
    <span class="overImg car-over">
      <div class="msgFlash overText">Make Profile Photo</div>
      <b class="icon icon-close closer">X</b>
    </span>
  </a>

And a plunker file: http://plnkr.co/edit/44G96cTdYsfJh6NCQUjE?p=preview