support channel_relationship (paritytech#113)

* support channel_relationship

cxrml/associations/src/lib.rs

@@ -65,6 +65,7 @@ decl_event!(
     {
         InitAccount(AccountId, AccountId, Balance),
         InitExchangeAccount(AccountId, AccountId),
+        InitChannelRelationship(Vec<u8>, AccountId),
     }
 );
 
@@ -84,7 +85,7 @@ impl<T: Trait> OnFinalise<T::BlockNumber> for Module<T> {
 decl_storage! {
     trait Store for Module<T: Trait> as Associations {
         pub Relationship get(relationship): map T::AccountId => Option<T::AccountId>;
-        pub TokenRelationship get(token_relationship): map (Vec<u8>, T::AccountId) => Vec<u8>;
+        pub ChannelRelationship get(channel_relationship): map Vec<u8> => Option< T::AccountId >;
         pub ExchangeRelationship get(exchange_relationship): map T::AccountId => Option<T::AccountId>;
         // fee
         pub InitFee get(init_fee) config(): T::Balance;
@@ -163,4 +164,14 @@ impl<T: Trait> Module<T> {
         Self::deposit_event(RawEvent::InitExchangeAccount(from, who));
         Ok(())
     }
+    pub fn init_channel_relationship( channel: Vec<u8>,who: &T::AccountId) -> Result {
+
+        if Self::channel_relationship(&channel).is_some() {
+            return Err("has register this channel");
+        } 
+
+        ChannelRelationship::<T>::insert(channel.clone(), who.clone());
+        Self::deposit_event(RawEvent::InitChannelRelationship(channel, who.clone()));
+        Ok(())
+    }
 }

cxrml/exchange/pendingorders/src/lib.rs

@@ -44,7 +44,7 @@ extern crate srml_system as system;
 extern crate cxrml_support as cxsupport;
 extern crate cxrml_tokenbalances as tokenbalances;
 
-#[cfg(test)]
+
 extern crate cxrml_associations as associations;
 #[cfg(test)]
 extern crate cxrml_system as cxsystem;
@@ -362,9 +362,11 @@ impl<T: Trait> Module<T> {
             return Err("channel name too long");
         }
         let transactor = ensure_signed(origin)?;
-        //TODO
-        let channel: T::AccountId = transactor.clone(); //从channel模块获得channel_name对应的account
-
+        //从channel模块获得channel_name对应的account
+        let channel: T::AccountId = match <associations::Module<T>>::channel_relationship(&channel_name) {
+            Some(relation)=>relation,
+            None=>transactor.clone(),
+        };
         Self::do_put_order(&transactor, &pair, ordertype, amount, price, &channel)
     }
     pub fn update_command_of(command_id: u64, bid: u128) {

src/genesis_config.rs

@@ -6,6 +6,7 @@ extern crate cxrml_tokenbalances;
 extern crate keys;
 extern crate primitives as btc_primitives;
 
+
 use self::base58::FromBase58;
 use self::cxrml_exchange_pendingorders::OrderPair;
 use chainx_runtime::{