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POHow to create associated object on the has_many relationship using rails?
 

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  1. POHow to create associated object on the has_many relationship using rails?
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    <p>I'm implementing a simple flight-book system using Rails 3.2 But I have a problem when I want to save a order, which may has many passengers.As is to say, they two are one-many relationship. This is Passenger's model.</p> <pre><code>class Passenger &lt; ActiveRecord::Base attr_accessible :accident_number, :cred_number, :cred_type, :delay_number, :name, :order_id validates :cred_type, :cred_number, :name, presence: true belongs_to :order, :inverse_of =&gt; :passengers end </code></pre> <p>This is Order's model</p> <pre><code>class Order &lt; ActiveRecord::Base attr_accessible :contact_email, :contact_name, :contact_phone, :flight_id, :print_time, :remark validates :contact_email, :contact_name, :contact_phone, :flight_id, :print_time, presence: true belongs_to :flight has_many :passengers, :dependent =&gt; :destroy, :inverse_of =&gt; :order accepts_nested_attributes_for :passengers, :allow_destroy =&gt; true attr_accessible :passengers_attributes, :allow_destroy =&gt; true end </code></pre> <p>And the params is like this</p> <pre><code>Parameters: { "passengers"=&gt;{"new_1"=&gt;{"name"=&gt;"Passenger 1", "cred_type"=&gt;"ID card", "cred_number"=&gt;"12345", "accident_number"=&gt;"1", "delay_number"=&gt;"1"}, "new_2"=&gt;{"name"=&gt;"Passenger 2", "cred_type"=&gt;"ID card", "cred_number"=&gt;"54321", "accident_number"=&gt;"1", "delay_number"=&gt;"1"}}, "order"=&gt;{"contact_name"=&gt;"Contact 1", "contact_phone"=&gt;"123456", "contact_email"=&gt;"test2@tset,com", "print_time"=&gt;"1", "remark"=&gt;""}, "commit"=&gt;"Create Order"} </code></pre> <p>The problem is the order and the passengers can't be saved. I have tried some ways, but they can't solve it...for example</p> <pre><code>def create @order = Order.new(params[:order]) respond_to do |format| if @order.save params[:passengers].each do |k, v| @order.passengers.create(v) end </code></pre> <p>THANK YOU in advance!!</p>
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A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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