Add model and views for bank accounts

app/models/bank_account.rb

@@ -0,0 +1,12 @@
+class BankAccount < ActiveRecord::Base
+
+  has_many :bank_transactions, dependent: :destroy
+
+  normalize_attributes :name, :iban, :description
+
+  validates :name, :presence => true, :uniqueness => true, :length => { :minimum => 2 }
+  validates :iban, :presence => true, :uniqueness => true
+  validates_format_of :iban, :with => /\A[A-Z]{2}[0-9]{2}[0-9A-Z]{,30}\z/
+  validates_numericality_of :balance, :message => I18n.t('bank_account.model.invalid_balance')
+
+end

app/models/bank_transaction.rb

@@ -0,0 +1,34 @@
+class BankTransaction < ActiveRecord::Base
+
+  # @!attribute external_id
+  #   @return [String] Unique Identifier of the transaction within the bank account.
+  # @!attribute date
+  #   @return [Date] Date of the transaction.
+  # @!attribute amount
+  #   @return [Number] Amount credited.
+  # @!attribute iban
+  #   @return [String] Internation Bank Account Number of the sending/receiving account.
+  # @!attribute reference
+  #   @return [String] 140 character long reference field as defined by SEPA.
+  # @!attribute text
+  #   @return [String] Short description of the transaction.
+  # @!attribute receipt
+  #   @return [String] Optional additional more detailed description of the transaction.
+  # @!attribute image
+  #   @return [Binary] Optional PNG image for e.g. scan of paper receipt.
+
+  belongs_to :bank_account
+  belongs_to :financial_link
+  belongs_to :supplier, foreign_key: 'iban', primary_key: 'iban'
+  belongs_to :user, foreign_key: 'iban', primary_key: 'iban'
+
+  validates_presence_of :date, :amount, :bank_account_id
+  validates_numericality_of :amount
+
+  # Replace numeric seperator with database format
+  localize_input_of :amount
+
+  def image_url
+    'data:image/png;base64,' + Base64.encode64(self.image)
+  end
+end

app/models/financial_link.rb

@@ -1,4 +1,5 @@
 class FinancialLink < ActiveRecord::Base
+  has_many :bank_transactions
   has_many :financial_transactions
   has_many :invoices
 end