Made messages more thread-like (replies, editing, etc.)

app/controllers/messagereplies_controller.rb

@@ -0,0 +1,77 @@
+class MessagerepliesController < ApplicationController
+
+  def edit
+    @reply = Messagereply.find(params[:id])
+    if mod? || @reply.author.is?(current_user)
+    else
+      flash[:alert] = "You are not allowed to edit this reply"
+      redirect_to @reply.message
+    end
+  end
+
+  def create
+    message = Message.find(params[:message_id])
+    if [message.user_sender, message.user_target].include? current_user
+      @reply = Messagereply.new(reply_params)
+      @reply.user_author = current_user
+      @reply.message = message
+      if @reply.save
+        @reply.message.update_attributes(user_hidden: nil)
+        if false
+          @reply.send_new_message_reply_mail
+        end
+        position = message.replies.count - 1
+        page     = position / Kaminari.config.default_per_page + 1
+        redirect_to message_path(@reply.message, page: page) + "#reply-#{@reply.id}", notice: 'Reply created!'
+      else
+        flash[:alert] = "Could not create reply."
+        redirect_to Message.find(params[:message_id])
+      end
+    else
+      flash[:alert] = "You are not allowed to create replies."
+      redirect_to Message.find(params[:message_id])
+    end
+  end
+
+  def update
+    @reply = Messagereply.find(params[:id])
+    if mod? || @reply.author.is?(current_user)
+      old_content = @reply.text_was
+      if @reply.update_attributes(reply_params)
+        if false
+          @reply.send_new_reply_mail(old_content)
+        end
+        flash[:notice] = "Reply updated!"
+        position = @reply.message.replies.index(@reply)
+        page     = position / Kaminari.config.default_per_page + 1
+        redirect_to message_path(@reply.message, page: page) + "#reply-#{@reply.id}"
+      else
+        flash[:alert] = "There was a problem while updating your reply"
+        render action: "edit"
+      end
+    else
+      flash[:alert] = "You are not allowed to edit this reply"
+      redirect_to @reply.message
+    end
+  end
+
+  def destroy
+    @reply = Messagereply.find(params[:id])
+    if mod? || @reply.author.is?(current_user)
+      if @reply.destroy
+        flash[:notice] = "Reply deleted!"
+      else
+        flash[:alert] = "There was a problem while deleting this reply"
+      end
+    else
+      flash[:alert] = "You are not allowed to delete this reply"
+    end
+    redirect_to @reply.message
+  end
+
+  private
+
+  def reply_params
+    params.require(:messagereply).permit(:text)
+  end
+end