I'm a complete rails noob, so there's probably something very simple I'm missing here. I have these little tweet-type things called microposts, and I want each micropost to have a release date set by the user. My form looks ok and doesn't show any errors in the browser when I create a new micropost, but the release date isn't being saved in the database. In my form to create a new micropost, I have this:
<div class="field">
<%= f.label :release_date %>
<%= f.text_field :release_date, :size => 10 %>
</div>
In my database schema, I have this:
create_table "microposts", :force => true do |t|
t.string "content"
t.integer "user_id"
t.datetime "created_at"
t.datetime "updated_at"
t.datetime "release_date"
end
I made the release_date attribute accessible in my Micropost model like so:
attr_accessible :content, :release_date
And my create method in my Micropost controller looks like this:
def create
#micropost = current_user.microposts.build(params[:micropost])
if #micropost.save
flash[:success] = "New event created."
redirect_to root_path
else
render 'pages/home'
end
end
Everything else saves just fine. It's only the release date that seems to be ignored. This is just a wild guess, but is rails ok with something like 10/25/2011 being saved as a datetime? Or is that supposed to be saved as a string and then parsed into a proper datetime format?
There's a lot of info missing here to evaluate. The params hash probably doesn't have the value, or it isn't hashed in a way expected by rails.
In your User model, do you have:
accepts_nested_attributes_for :microposts
Also, you'll want to look up tutorials on form_for and fields_for in rails.
Likely the format you are entering the date in isn't getting cast as a datetime properly:
def Micropost < ActiveRecord::Base
before_validation_on_create :convert_release_date_to_datetime
private
def convert_release_date_to_datetime
self.release_date = Time.parse(release_date)
end
end
Related
My apologies for the newbie question, I'm relatively new to Rails and SQL. I'm trying to count all the likes a User has done on my specific items. With the help of the SO community and from Treehouse Coding I am able to show which Users have liked my specific items. In addition, I was able to research how to show all the likes that I have received (from Lisa, James, Harry, etc.) using .join in my controller. Now I would like to show the count for each specific User. So for instance if James like 4 of my items I would like to show 4 next to James. I have listed all my relevant code below, thank you guys so much!!
Index.html.erb
My Fans - <%= #likersnumero%>
<%- #likers.each do |liker| %>
<%= image_tag liker.avatar, width: 25, class: "css-style" %>
<%= liker.username %>
<% end %>
Items_controller
def index
#items = Item.order("created_at DESC")
if current_user.present?
#likers = current_user.items.map(&:likes).flatten.map(&:user).flatten
#likersnumero = current_user.items.joins(:likes).map(&:user).count
end
end
Item.rb
class Item < ApplicationRecord
has_many :likes, :counter_cache => true
end
Users.rb
class User < ApplicationRecord
has_many :likes
def likes?(post)
post.likes.where(user_id: id).any?
end
#Tried using def total_likes in my index.html.erb using <%= liker.total_likes%>
but got the following
error SQLite3::SQLException: no such column: likes:
SELECT SUM(likes) FROM "likes" WHERE "likes"."user_id" = ?"
def total_likes
likes.sum(:likes)
end
end
Routes.rb
Rails.application.routes.draw do
resources :items do
resource :like, module: :items
end
root to: "items#index"
end
Schema.rb
create_table "items", force: :cascade do |t|
t.string "product"
t.integer "user_id"
t.integer "item_id"
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
t.string "avatar_file_name"
t.string "avatar_content_type"
t.integer "avatar_file_size"
t.datetime "avatar_updated_at"
t.integer "likes_count", default: 0, null: false
end
create_table "likes", force: :cascade do |t|
t.integer "user_id"
t.integer "item_id"
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
end
Given liker is the user who liked post and poster_id is the id of the person who create the post.
liker.likes.joins(:items).where('items.user_id = ?', poster_id).count
Or somethings similar. If you post your annotated model or table schema I can probably come up with a better answer.
After countless reading and experiementing I figured out the answer that worked for me. In case anyone might encounter a similar issue - I have provided the answer that worked for me.
To get total likes by a specific user on all users items - In my controller I put the following
#likersuno = #likers.map(&:likes).flatten.map(&:user).flatten.uniq
And in my index.html.erb
I simply put this and it worked from there
<%= #likersuno.count %>
To get total likes by a specific user on my specific items - In my index.html.erb I put the following and it worked beautifully
<%= liker.likes.select { |like| like.item.user == current_user }.count %>
I have a Rails 3.2.21 app where I'm adding a simple form/collection_select field in my form. When selecting an object from the dropdown (or leaving it blank) I get the following error:
ActiveRecord::AssociationTypeMismatch at /calls/5
BillFacility(#70179530126460) expected, got String(#70179505820040)
Here's what my models look like:
call.rb
belongs_to :bill_facility
attr_accessible :bill_facility_id
bill_facility.rb
has_many :calls
Here's what my form looks like:
_form.html.erb
<%= f.collection_select(:bill_facility_id, BillFacility.order("facility_name ASC"), :id, :facility_name, {:include_blank => true}, {:class => 'select'}) %>
Here's the migrations I did to add the BillFacility model and add the bill_facility_id to the Call model:
class CreateBillFacilities < ActiveRecord::Migration
def change
create_table :bill_facilities do |t|
t.string :facility_name
t.string :facility_address
t.timestamps
end
end
end
class AddBillFaciltyIdToCalls < ActiveRecord::Migration
def change
add_column :calls, :bill_facility_id, :integer
end
end
If I manually assign the call an id in bill_facility_id I get an unknown to_i method error. If I manually make it nil then select a BillFacilty from the drop down (or leave it blank) I get the mismatch error:
ActiveRecord::AssociationTypeMismatch at /calls/5
BillFacility(#70179530126460) expected, got String(#70179505820040)
I'm sure this is something simple that I'm missing. Anyone have any ideas on what I'm doing wrong here? It's a bit early so my mind is kind of fuzzy so I should probably wait until I'm fully awake but figured I'd ask for some help.
If you have any questions, please let me know.
I think I have this figured out. Definitely not awake enough to be writing code.
I had this in my form before the BillFacility collection_select
<%= f.label :Bill_Facility, "Bill Facility", class: "control-label" %><%= f.check_box :bill_facility, :id => 'bill_facility_checkbox' %>
So I was calling a field named bill_facility that was in my database, but since bill_facility is an associated model, it gave me the mismatch error. So I simple altered the migration to change the check_box to bill_fac and it worked.
I have a select box on a form to select the type of category for a project:
<%= f.select(:category, collection_select(:project_category, :cat_id, #project_category, :id, :cat_name)) %>
It should populate from the project_categories table.
The migration looks like this:
class CreateProjectCategories < ActiveRecord::Migration
def change
create_table :project_categories do |t|
t.string :category_name
t.text :cat_desc
t.date :created_on
t.datetime :updated_at
end
end
end
My project.rb model deines has_one :category and the projectCategory.rb model defines belongs_to :project.
My project_categories table is populated with data. I got the syntax from the Rails Guides, but it's not working.
Any help?
Ok, I had the wrong syntax. The final code looks like this:
<%= collection_select(:project_categories, :id, Project_Category.all, :id, :category_name) %>
Essentially the syntax should be defined like this: WARNING: PSEUDO-CODE!!
<%= collection_select(:database_table, :lookup_value, Model_Name.all, :returned_numeric_value, :returned_text_value_based_on_numeric_value) %>
Don't know why the API docs couldn't have just said so...
I am a rails newbie. I am trying to implement acts-as-taggable-on on my sample app. I am able to enter multiple tags using tag_list but facing issues searching them.
This is what I got.
I used scaffold User to generate the controller & model.
class CreateUsers < ActiveRecord::Migration
def change
create_table :users do |t|
t.string :name
t.text :tags
t.timestamps
end
end
end
My User Model is
class User < ActiveRecord::Base
serialize :tags
acts_as_taggable_on :tags
scope :by_join_date, order("created_at DESC")
end
My User controller
Class UsersController < ApplicationController
def index
#users = User.all
#search = User.tagged_with("Tag11")
end
...
...
...
end
I also did not make any changes to class ActsAsTaggableOnMigration < ActiveRecord::Migration after installing the gem.
In my view I replaced :tags with :tag_list in my _form, index & show html files
<div class="field">
<%= f.label :tags %><br />
<%= f.text_field :tag_list %>
</div>
This is what I get in the browser
Could you please help me understand where I am making a mistake?
Thank you.
I'm guessing (because you haven't provided the code from your other view yet) but:
when you do #search = User.tagged_with("Tag11") what is getting returned is not the tag names, but the actual tag objects. If you have: <%= #search %> in your view, it won't work. You'll need something like:
<%= #search.map(&:name).join(', ') %>
or similar.
Hey all,
I'm having a pretty weird problem and am having trouble isolating the cause. I get the feeling its a simple solution, but I was hoping for a nudge in the right direction. I have the following models:
class User < ActiveRecord::Base
has_many :pnotes
class Pnote < ActiveRecord::Base
belongs_to :preport
belongs_to :user
class Preport < ActiveRecord::Base
has_many :pnotes, :dependent=>:destroy
The Pnote portion of my schema looks as so:
create_table "pnotes", :force => true do |t|
t.integer "preport_id"
t.integer "user_id"
t.text "content"
t.datetime "created_at"
t.datetime "updated_at"
end
I'm trying to display all of the Pnotes associate with a given Preport on the show page of the Preport
My Preport Controller has the following code for the show action:
def show
#board = Board.find(params[:board_id])
#preport = #board.preport
#pnotes = #preport.pnotes
#pnote=#preport.pnotes.build
respond_to do |format|
format.html # show.html.erb
format.xml { render :xml => #preport }
end
end
So now in my show.html.erb in the Preports folder, I am trying to display a list of the Pnotes as such:
<ul>
<% #pnotes.each do |pnote| %>
<li><%= pnote.user.login %><span>-<%=pnote.content %></span></li>
<% end %>
</ul>
"login" is the standard field that came along with the Devise Authentication Gem.
However, this gives me the following error:
undefined method `login' for nil:NilClass
If I change the view to this:
<%= pnote.user%>-<%=pnote.content %>
I get :
#<User:0x106c25888>-Testing
, so it appears that it is identifying the associated user, but unable to grab its attributes.
Any advice would be greatly appreciated! I feel like there is a fairly small oversight going on here, but I am unable to distinguish from exactly where
Thanks!
Unless you're using a very old version of Devise that I'm not aware of, the User model wouldn't have a login attribute.
Try email instead.