I'd like to include a rails object in my keywords as well as straight text but the code is clearly not the right way to do it...how can I do this?
set_meta_tags :keywords => %w[keyword1 keyword2 #{params[:hospital]}]
You might want to have a look at two plug-ins for including rails object in meta tags:
Meta Magic: https://github.com/lassebunk/metamagic
Head Liner: https://github.com/mokolabs/headliner
Edit: For Meta tag gem
What I usually do is write a meta helper that I simply stick in my ApplicationHelper, that looks like this:
def meta(field = nil, list = [])
field = field.to_s
#meta ||= {
'robots' => ['all'],
'copyright' => ['My Copyright'],
'content-language' => ['en'],
'title' => [],
'keywords' => []
}
if field.present?
#meta[field] ||= []
case list.class
when Array then
#meta[field] += list
when String then
#meta[field] += [list]
else
#meta[field] += [list]
end
case field
when 'description' then
content = truncate(strip_tags(h(#meta[field].join(', '))), :length => 255)
else
content = #meta[field].join(', ')
end
return raw(%(<meta #{att}="#{h(field)}" content="#{h(content)}"/>))
else
tags = ''
#meta.each do |field, list|
tags += meta(field)+"\n"
end
return tags.rstrip
end
end
You can simply set meta tags in your views, by adding a call to meta() in it. So in an articles/show.html.erb you might add this to the top of your view:
<% meta(:title, #article.title) %>
And in your layouts, you add it without any parameters, so it'll spit out the meta tags.
<%= meta %>
Or have it output an individual tag:
<%= meta(:title) %>
I bet you there's more elegant solutions, though.
But if you were looking for something already implemented in Rails you're out of luck.
Thanks.
Try this in your view as it worked for me (using meta-tags gem):
<% keywords [[#modelname.keyword1], [#modelname.keyword2]] %>
and you cad additional keywords in text format by adding them within the ruby in the following format ['keyword3']
Related
I have a form to submit data and I want to automatically set one field depending on whether all the other fields are filled out or not. If they are all completed, the field will be "complete", if not it will be set to "draft".
So I have the hidden field like this:
<%= f.hidden_field :status, :value => "draft" %>
to make it default to draft. BUT, can I add logic that says it will be "complete" if all the other fields are filled out and if so how?
Here is how to do it on the client-side with jquery, assuming your model is named foo:
<script type='text/javascript'>
$(document).ready(function() {
$('input[name*="otherfields"]').on('change', function() {
var othercount = 0;
$('input[name*="otherfields"]').each(function() {
if ( $(this).is(':checked') )
othercount += 1;
});
if ( othercount == 2 )
$('#foo_status').attr('checked',true)
else
$('#foo_status').attr('checked',false)
});
});
</script>
<%= check_box_tag :item1 , '1', false, :name=>'otherfields[1]' %>
<%= check_box_tag :item2 , '2', false, :name=>'otherfields[2]' %>
<%= f.hidden_field :status, :value => "draft" %>
Assuming no other client-side events have to take place when the the status changes, it would be best practice to place this kind of business logic inside of your model as a callback, e.g. (replace Foo and fieldx with your model and field names):
class Foo < ActiveRecord::Base
before_save :default_status
def default_status
if field1 && field2 && field3 && field4
self.status = 'completed'
else
self.status = 'draft'
end
end
end
Yes, you can do that in the controller.
Lets say the form directs you to the create action.
In the create action of the controller, you can check if all the fields are completed by looking at params and then use if statement to assign appropriate value to status before saving
This would be done with javascript, possibly jQuery. However, why would you design it this way? Could you not do this on the server side?
I am stuck with what I think is a simple problem. I am creating json and need to have the format be:
[{ "source" : "google / organic", "visits" : 20 }]
And here is what I get:
[{"source"=>"google / organic", "visits"=>20}]
Here is the model (campaign_results.rb)
def as_json(options = {})
{ "source" => source,
"visits" => visits,
}
end
In the controller:
def show
#campaign_summary = CampaignResults.all
end
In the view:
<%= raw #campaign_summary.as_json %>
Any suggestions on what I should do to replace the "=>" with ":"?
Try calling #to_json:
<%= raw #campaign_summary.as_json.to_json %>
This seems like it should be a common problem but I'm having trouble finding an answer. Basically I want to have a form with 10 or so checkboxes which I'm creating with check_box_tag. When the form is submitted I want to generate a query that return all records that match ANY of the checked selections. So, the number of checked selections will vary.
So, for example, if I have
class Book < ActiveRecord::Base
belongs_to :author
end
I want to generate something like
Book.where("author_id = ? or author_id = ?", params[authors[0]], params[authors[1]]) if there are two boxes checked, etc.
Thanks for any insight.
Will this work for you?
Book.where(author_id: [array_of_author_ids])
You need to collect author_ids from params first
I recently had to do something similar, this is how I achieved this. It's pretty clever (at least I think so. :))
I created a query model that serializes the query column (text field) in JSON. I use a form to get the query data from the user with selection fields.
class BookQuery < ActiveRecord::Base
has_many :books
# loop through each foreign key of the Book table and create a hash with empty selection
def self.empty_query
q = {}
Book.column_names.each do |column_name|
next unless column_name.ends_with?("_id")
q.merge column_name => []
end
end
end
I'm using Author as an example below:
<%= form_for #book_query do |f| %>
<% for author in Author.all %>
<%= check_box_tag "book_query[query][author_ids][]", author.id, false%>
<%= author.name %>
<% end %>
<%= f.submit "Save Query" %>
<% end %>
When this form is submitted you ended up with parameters like this:
When the form is submitted it generates this parameter:
Parameters: {"utf8"=>"✓", "authenticity_token"=>"XXXXXXXXXXX", "book_query"=>{"query"=>{"author_ids"=>["2", "3"]}}, "commit"=>"Save Query"}
Now in the BookQuery controller's create action you can just do what create function always does:
def create
#book_query = BookQuery.build(params[:book_query])
if #book_query.save
flash[:success] = "Book query successfully saved."
redirect_to ...
else
flash[:error] = "Failed to save book query."
render :new
end
end
But by default rails serializes the data in hash type:
1.9.3p194 :015 > pp BookQuery.find(9).query
BookQuery Load (0.7ms) SELECT "book_queries".* FROM "book_queries" WHERE "book_queries"."id" = $1 LIMIT 1 [["id", 9]]
"--- !ruby/hash:ActiveSupport::HashWithIndifferentAccess\nauthor_ids:\n- '2'\n- '3'\n"
=> "--- !ruby/hash:ActiveSupport::HashWithIndifferentAccess\nauthor_ids:\n- '2'\n- '3'\n"
In BookQuery model, add the following:
serialize :query, JSON
But rail would change the IDs to string:
1.9.3p194 :018 > query = JSON.parse(BookQuery.find(10).query)
BookQuery Load (0.5ms) SELECT "book_queries".* FROM "book_queries" WHERE "book_queries"."id" = $1 LIMIT 1 [["id", 10]]
=> {"author_ids"=>["2", "3"]}
1.9.3p194 :019 > query["author_ids"]
=> ["2", "3"]
What I did then is override the attribute accessors in BookQuery model:
The below has to be done because the hash returns strings, not ids in integer.
def query=(query)
query.each_pair do |k, v|
if query[k].first.present?
query[k].map!(&:to_i)
else
query.except!(k)
end
end
write_attribute(:query, query)
end
# just want to avoid getting nil query's
def query
read_attribute(:query) || {}
end
To find book with this query, you can simply add this function to your Book model:
def self.find_by_book_query(book_query, options = {})
options[:conditions] = book_query.query
find(:all, options)
end
Now you get a customizable query string based on the model definition Book and everything works like the Rails way. :)
The database is seeded with values in english language and format, e.g., :hourlyrate => 20.90. On first start (language is english by default), the input form displays the content of the field correctly. I can modify and save, no problem.
If I switch to german, the number is displayed correctly as 20,90. If I edit anything on this form, I can not save again, as the validation catches the number as not being valid.
My question is, do I have to perform corrections in my controller before saving, or did I miss some built-in function of Rails?
Relevant parts of the code
Helper:
def my_number_with_precision(value)
if value
# value
number_with_precision(value, :precision => 2)
end
end
Validation:
validates :hourlyrate, :numericality => { :greater_or_equal_than => 0, :message => " is an invalid number or below zero" }
Form:
<div class="input">
<%= f.text_field :hourlyrate, :value => my_number_with_precision(f.object.hourlyrate) %>
</div>
Gemfile
gem 'rails-i18n'
I came up with one of the following solutions - language specific code:
def parse_i18n(value)
if I18n.locale = 'de'
value.gsub(',', '.')
else
value
end
end
def parse_i18n(value)
value.gsub(I18n.t("number.currency.format.unit"),'').
gsub(I18n.t("number.currency.format.delimiter"), '').
gsub(I18n.t("number.currency.format.separator"), '.')
end
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/