I'm using calendar_helper with success using this code:
<%=
calendar({:year => Date.today.year, :month => Date.today.month}) do |d|
cell_text = "#{d.mday}"
cell_attrs = {:class => 'day'}
#events.each do |e|
if e.start_at.mday == d.mday
cell_text << link_to( e.name, :action => 'show', :id => e ) << "<br />"
cell_attrs[:class] = 'specialDay'
end
end
[cell_text, cell_attrs]
end
%>
This gives me the correct html, with events falling on this month's days being outputed correctly. However, this gives me the escaped code, so i need to pass it trough raw.
As soon as i pass it trough raw though, i lose the details on the calendar (events) and get only the calendar itself.
Any idea why this is happening or how to circumvent it?
I put the work I needed to do in a helper method and passed day and my collection (like your #events) to the helper method. It worked fine without a call to raw and left the view code much cleaner.
Related
In my application when a user visits finances/trends/2014/03 a select query is executed in my trends_controller
#expenses = Expense.select("name, amount, id, created_at").where(:user_id => current_user.id).where(["strftime('%Y', created_at) = ? AND strftime('%m', created_at) = ?", params[:year], params[:month] ])
#expenses_by_month = #expenses.group_by { |expense| expense.created_at.beginning_of_month }
and if the query returns results, the page is rendered, otherwise a redirect occurs. This all seems to work fine.
The problem occurs when I attempt to pass the params[:month] into a link on my index page, and the leading zero in the :month seems to get stripped, so the link will return a path such as finances/trends/2014/3 instead of the required finances/trends/2014/03 for the select statement (because in the db, the created_at value is stored as 2014-03-day, of course).
routes:
get "finances/trends/:year/:month" => "trends#month", :as => :month_trends
index.html.erb:
<% #expenses_by_month.each do |month, expenses| %>
<%= link_to "#{month.strftime('%B')}", month_trends_path(:year => month.year, :month => month.month) %>
<% end %>
I understand that the %m in the select statement should return the month as a padded value, so I'm not sure at all what is causing this.
Try some direct ruby way, if that works. Here is how
"3".rjust(2,"0") #=> 03
"3".ljust(2,"0") #=> 30
month=3
month.to_s.rjust(2,"0") #=> 03
I'm trying to create a search form in my rails application. I've looked up various solutions but they make little sense to me.
I'm getting the following error when I run a search through a form in my rails app. Right now my concern (other than the error) is my instance variable #computers in my index action. I'm pretty sure it's not 'the rails way' to get a search done properly and would love some advice.
Error
undefined method `%' for #<Array:0x5780460>
Parameters after Search
http://localhost:3000/computers?utf8=%E2%9C%93&direction=&sort=&search=bob
Search Form
<%= form_tag computers_path, method: "get" do %>
<%= hidden_field_tag :direction, params[:direction] %>
<%= hidden_field_tag :sort, params[:sort] %>
<%= text_field_tag :search, params[:search] %>
<%= submit_tag "Go", name: nil, class: "btn btn-primary" %>
<% end %>
Call to Method
def index
#computers = Computer.where(school_id: current_user.school_id).search(params[:search]).category(params[:category]).order(sort_column + " " + sort_direction)
end
Method
def Computer.search(search)
if search
search = search.downcase
params = []
values = {}
column_names.each do |c|
params << "#{c} LIKE #{c.to_sym}"
values[c.to_sym] = search
end
params.join (' OR ')
where(params,values)
else
all
end
end
You've got the right idea, but invoking the .join method does not change the object on which it is called, it merely returns a string representation. You need to store the return in a variable, something like this: paramsStr = params.join(' OR '). Then simply pass paramsStr to the where clause.
Ultimately, that is what is causing your unidentified method % for Array .... error; this version of the where method is expecting the first parameter to be a string. Check out this documentation, the part about placeholder conditions.
Hope that helps.
I am trying to create a nested attribute form to create a model which is primarily an association "connector" between two other models. In my case, the models represent books, awards, and the "connector" model book_awards. When I am editing a book, I want to be able to quickly select which awards it has won.
I've been using
http://railscasts.com/episodes/196-nested-model-form-part-1
to help me get started, but I'm afraid I'm pretty much stuck.
Another SO question which seems similar is
accepts_nested_attributes_for with find_or_create? Unfortunately, it's also not quite what I'm doing and I haven't been able to adapt it.
My models look like this. Each model has additional attributes and validations etc, but I've removed them for clarity.
class Book < ActiveRecord::Base
has_many :book_awards
accepts_nested_attributes_for :book_awards, :allow_destroy => true
end
class Award < ActiveRecord::Base
has_many :book_awards
end
class BookAward < ActiveRecord::Base
belongs_to :book, :award
end
In my book controller methods for edit and new, and the failure cases for create and update I have a line #awards = Award.all.
In my view, I would like to see a list of all awards with check boxes next to them. When I submit, I would like to either update, create, or destroy a book_award model. If the check box is selected, I would like to update an existing model or create a new one if it doesn't exist. If the check box isn't selected, then I would like to destroy an existing model or do nothing if the award never existed. I have a partial for book_awards. I'm not sure if the check box selector should be in this partial or not.
I think my check box will be my hook to :_destroy but with its polarity reversed. I think something like this will basically do it:
= f.check_box :_destroy, {}, 0, 1
Currently, I have this in my partial but I'm not sure where it really belongs.
Next comes my view which currently doesn't work, but maybe it will help demonstrate what I'm trying to do. I loop through the awards and use a fields_for to set nested attributes for anything that already exists. It's horribly ugly, but I think it somewhat works. However, I don't really know how to get started with the else case.
= f.label :awards
- #awards.each do |a|
- if f.object.awards && f.object.awards.include?(a)
= f.fields_for :book_awards, f.object.book_award.select{|bas| bas.award == a } do |ba|
= render 'book_awards', :f => ba, :a => a
- else
= fields_for :book_awards do |ba|
= render 'book_awards', :f => ba, :a => a
I would prefer the awards to be listed in the same order each time (my #awards assignment in the controller will probably specify the order) as opposed to listing the existing awards first or last.
I hate to answer my own question, but I finally figured out something which works. The first thing I needed to do was to update the "new" case based on the crazy object which was included in the railscast. Next, I needed to manually set the :child_index. Finally, I needed to manually set the :_destroy check box appropriately.
.field
= f.label :awards
- #awards.each_with_index do |a,i|
- if exists = (f.object.awards && f.object.awards.include?(a))
- new_ba = f.object.book_awards.select{|s| s.award == a}
- else
- new_ba = f.object.class.reflect_on_association(:book_awards).klass.new
= f.fields_for :book_awards, new_ba, :child_index => i do |ba|
= render 'book_awards', :f => ba, :a => a, :existing => exists
My partial looks like this:
.field
= f.check_box :_destroy, {:checked => existing}, 0, 1
= f.label a.name
= f.hidden_field :award_id, :value => a.id
= f.label :year
= f.number_field :year
It's not horribly pretty, but it seems to do exactly what I wanted.
I am working the acts-as-taggable-on gem and have a question about how to filter down search results based on tags users select. Here's an abridged look at my controller:
class PhotosController < ApplicationController
def index
#photos = Photo.where(["created_at > ? AND is_approved = ?", 1.months.ago, true])
#tags = ["Animals", "Architecture", "Cars", "Flowers", "Food/Drink", "General", "Landscape", "Mountains", "Nature"]
end
def search_by_tag(tag)
#photos = Photo.where('tagged_with LIKE ?', tag)
end
end
Photos/index
<% #tags.each do |tag| %>
<%= link_to tag, {:search_by_tag => tag}, :class => "tag" %>
<% end %>
This lists out all of the tags from the hash #tags defined in index, but clicking them doesn't actually filter anything down. Here's a look at what clicking one of those links produces in the log:
Started GET "/photos?search_by_tag=Animals" for 127.0.0.1 at Sun Oct 09 17:11:09 -0400 2011
Processing by PhotosController#index as HTML
Parameters: {"search_by_tag"=>"Animals"}
SQL (0.5ms) SELECT name FROM sqlite_master WHERE type = 'table' AND NOT name = 'sqlite_sequence'
The result I want is for the page to display only Photos that are tagged_with whichever tag was clicked on. I can't quite figure out how to accomplish this.
(Side-question: I can't seem to find a way to list out all of the tags from the tags table that acts-as-taggable-on generated. Doing something like Photo.tagged_with or Photo.tags doesn't work. I am able to see the "tags" table the gem created, and the entries inside of it; I'm just not really clear how to handle that using this gem)
Any thoughts greatly appreciated.
UPDATE
I've updated my code and am a bit closer.
class PhotosController < ApplicationController
def search_by_tag
#photos = Photo.tagged_with(params[:tag_name])
end
photos/index
<% Photo.tag_counts_on(:tags).map(&:name).each do |tag| %>
<%= link_to tag, {:action => 'search_by_tag', :tag_name => tag}, :class => "tag" %>
<% end %>
I believe this is closer, but still working through this...
You have a number of errors in your code:
Your link_to call is actually calling the index action.
Your search_by_tag method is expecting an argument, where it should be using the params hash to access the parameters passed to it in the web request.
tagged_with is a class method added by acts_as_taggable_on, not a field in your table - therefore you can't use it in the where method like you have done.
Finally, to get all the tag names: Photo.tag_counts_on(:tags_or_whatever_you_tagged_on).map(&:name)
Take a look at the acts_as_taggable_on documentation and you'll see examples of how to use tag_counts_on and tagged_with.
As for the Rails things: http://guides.rubyonrails.org/ http://railsforzombies.org/ and/or http://railscasts.com/
I'm writing my first custom rails validation, and would like to tag the offending class with an html "error" class if they return false - I can't quite figure out how to do it. Relevant validation code below - any help appreciated.
(If it makes a difference, I'm using jQuery)
validates_each :shop do |record, attr, value|
shopvar = record.shops.map{ |s| s.email.downcase.strip }
if shopvar.count != shopvar.uniq.count
record.errors.add(attr, 'has the same email address entered more than once')
#record.errors[attr] << "You have entered this shop in the form twice"
end
end
So in your form you'd have something like this for an input field
<%= form.text_field :title %>
Since errors is a hash you could use the "include?" method like so...
errors.include?(:title)
This tells you that there's something wrong with this field. Now all you need to do is style it.
Whack on a ternary operator asi...
<% css_class = errors.include?(:title) ? "highlight_error_class" : "no_problem_class" %>
<%= form.text_field :title, :class => css_class %>
Done.