I am making an e-learning platform and have a Course resource so I can add courses dynamically. I am now at the stage where I need to upload videos to each course, and I have decided to use wistia for this.
What I'm not sure about exactly is how can I Embed the videos that belong to each course directly through the Course form? I couldn't find documentation as to how to achieve this, so any help would be highly appreciated.
Example:-
I have this embed code from wistia:
<iframe src="//fast.wistia.net/embed/iframe/tk6picrt4k" allowtransparency="true" frameborder="0" scrolling="no" class="wistia_embed" name="wistia_embed" allowfullscreen mozallowfullscreen webkitallowfullscreen oallowfullscreen msallowfullscreen width="640" height="388"></iframe>
<script src="//fast.wistia.net/assets/external/E-v1.js" async></script>
Once I make a :video_url table in the database, how do I then make the above code work as intended if I paste it in a form box in the Create Course action and submit the form? and What data type should :video_url be?
Courses Controller:-
class CoursesController < ApplicationController
before_action :set_course, only: [:show, :edit, :update, :destroy]
before_action :set_grade
respond_to :html
def index
@grades = Grade.all
@courses = Course.where grade: params[:grade_id]
respond_with(@course)
end
def show
respond_with(@course)
end
def new
@grade = Grade.find(params[:grade_id])
@course = @grade.courses.new
respond_with(@course)
end
def edit
end
def create
@grade = Grade.find(params[:grade_id])
@course = @grade.courses.build(course_params)
if @course.save
redirect_to grade_courses_path(@grade, @courses), notice: 'Successfully Created Course'
else
render action: 'new'
end
end
def update
@course.update(course_params)
redirect_to grade_courses_path(@grade, @courses), :notice => "Successfully Updated Course"
end
def destroy
@course.destroy
redirect_to grade_courses_path(@grade, @courses), :notice => "Successfully Deleted Course"
end
private
# Use callbacks to share common setup or constraints between actions.
def set_course
@course = Course.find(params[:id])
end
def set_grade
@grade = Grade.find(params[:grade_id])
end
# Never trust parameters from the scary internet, only allow the white list through.
def course_params
params.require(:course).permit(:title, :period, :description, :semester, :grade, :subject, :grade_id, :chapters_from, :chapters_to, :instructor, :price)
end
end
_form.html.erb
<%= bootstrap_form_for [@grade, @course] do |f| %>
<% if @course.errors.any? %>
<div id="error_explanation">
<h2><%= pluralize(@course.errors.count, "error") %> prohibited this course from being saved:</h2>
<ul>
<% @course.errors.full_messages.each do |message| %>
<li><%= message %></li>
<% end %>
</ul>
</div>
<% end %>
<div class="field">
<%= f.text_field :title %>
</div>
<div class="field">
<%= f.select :subject, [["Math"], ["Physics"], ["Chemistry"], ["Science"], ["Biology"], ["English"], ["Arabic"], ["Social Studies"]], { label: "Subject"}, { class: "selectpicker" } %>
</div>
<div class="field">
<%= f.text_field :instructor %>
</div>
<div class="field">
<%= f.select :period, [["First"], ["Second"], ["Third"], ["Final"]], { label: "Period"}, { class: "selectpicker" } %>
</div>
<div class="field">
<%= f.text_area :description %>
</div>
<div class="field">
<%= f.select :semester, [["First"], ["Second"]], { label: "Semester"}, { class: "selectpicker" } %>
</div>
<div class="field">
<%= f.number_field :chapters_from %>
</div>
<div class="field">
<%= f.number_field :chapters_to %>
</div>
<div class="field">
<%= f.number_field :price %>
</div>
<div class="actions">
<%= f.submit %>
</div>
<% end %>
Inside your controller we have to permit the new attribute video_url to be set. Rails will handle updates/creates for it on its own:
# Never trust parameters from the scary internet, only allow the white list through.
def course_params
params.require(:course).permit(:title, :period, :description, :semester, :grade, :subject, :grade_id, :chapters_from, :chapters_to, :instructor, :price, :video_url)
end
Inside your view where you have the static iframe:
...
<iframe src="#{@course.video_url}" allowtransparency="true" frameborder="0" scrolling="no" class="wistia_embed" name="wistia_embed" allowfullscreen mozallowfullscreen webkitallowfullscreen oallowfullscreen msallowfullscreen width="640" height="388"></iframe>
...
This will populate your view with the given video_url. Note, there's no exception handling if the video_url is NIL.
Your video_url should be of datatype :string. That's sufficient for a simple URL :)
Considering you already have a form to submit data for your course (To create, edit, update the course with information) you will just have to add another input field for the URL (video_url).
Now that you provided the form, we can just add another input:
<%= bootstrap_form_for [@grade, @course] do |f| %>
<% if @course.errors.any? %>
<div id="error_explanation">
<h2><%= pluralize(@course.errors.count, "error") %> prohibited this course from being saved:</h2>
<ul>
<% @course.errors.full_messages.each do |message| %>
<li><%= message %></li>
<% end %>
</ul>
</div>
<% end %>
<div class="field">
<%= f.text_field :title %>
</div>
<div class="field">
<%= f.select :subject, [["Math"], ["Physics"], ["Chemistry"], ["Science"], ["Biology"], ["English"], ["Arabic"], ["Social Studies"]], { label: "Subject"}, { class: "selectpicker" } %>
</div>
<div class="field">
<%= f.text_field :instructor %>
</div>
<div class="field">
<%= f.select :period, [["First"], ["Second"], ["Third"], ["Final"]], { label: "Period"}, { class: "selectpicker" } %>
</div>
<div class="field">
<%= f.text_area :description %>
</div>
<div class="field">
<%= f.select :semester, [["First"], ["Second"]], { label: "Semester"}, { class: "selectpicker" } %>
</div>
<div class="field">
<%= f.number_field :chapters_from %>
</div>
<div class="field">
<%= f.number_field :chapters_to %>
</div>
<div class="field">
<%= f.number_field :price %>
</div>
<div class="field">
<%= f.text_field :video_url %>
</div>
<div class="actions">
<%= f.submit %>
</div>
<% end %>
That should be it!
If you already have a form as well as an existing controller, hit us up with more code and I will gladly edit my answer to give you more specific input.
So far, this should be it and enough for you to work with :)
--- If you still need something else, let us know.