Fix bug YH-3192. reivewed by redding.

@@ -147,7 +147,7 @@ export function drillToEditPostPage() {
 
 export function titleEdited(title) {
     return (dispatch, getState) => {
-        let canSubmit = canSubmitPost(getState(), title, null, null);
+        let canSubmit = canSubmitPost(getState(), title, null, null, null);
         dispatch({
             type: POSTING_TITLE_EDITED,
             payload: {title, canSubmit},
@@ -157,7 +157,7 @@ export function titleEdited(title) {
 
 export function contentEdited(content) {
     return (dispatch, getState) => {
-        let canSubmit = canSubmitPost(getState(), null, content, null);
+        let canSubmit = canSubmitPost(getState(), null, content, null, null);
         dispatch({
             type: POSTING_CONTENT_EDITED,
             payload: {content, canSubmit},
@@ -167,7 +167,7 @@ export function contentEdited(content) {
 
 export function boardSelected(sectionName, sectionId) {
     return (dispatch, getState) => {
-        let canSubmit = canSubmitPost(getState(), null, null, sectionName);
+        let canSubmit = canSubmitPost(getState(), null, null, sectionName, null);
         dispatch({
             type: POSTING_BOARD_SELECTED,
             payload: {sectionName, sectionId, canSubmit},
@@ -176,26 +176,31 @@ export function boardSelected(sectionName, sectionId) {
 }
 
 export function assetsSelected(assets) {
-    return {
-        type: POSTING_ASSETS_SELECTED,
-        payload: assets,
-    };
+    return (dispatch, getState) => {
+        let canSubmit = canSubmitPost(getState(), null, null, null, assets);
+        dispatch({
+            type: POSTING_ASSETS_SELECTED,
+            payload: {assets, canSubmit},
+        });
+    }
 }
 
-function canSubmitPost(state, newTitle = null, newContent = null, newSectionName = null) {
+function canSubmitPost(state, newTitle = null, newContent = null, newSectionName = null, nuewAssets = null) {
     let {posting} = state;
     let {post} = posting;
-    let {title, content, sectionName} = post;
+    let {title, content, sectionName, assets} = post;
 
     let canSubmitPost = false;
 
     let titleValue = newTitle !== null ? newTitle : title;
     let contentValue = newContent !== null ? newContent : content;
     let sectionNameValue = newSectionName !== null ? newSectionName : sectionName;
+    let assetsValue = nuewAssets !== null ? nuewAssets : assets.toJS();
 
+    let hasAssets = assetsValue.length;
     let hasTitleOrContent = titleValue.length > 0 || contentValue.length > 0;
     let hasSection = sectionNameValue.length > 0;
-    if (hasTitleOrContent && hasSection) {
+    if ((hasTitleOrContent || hasAssets) && hasSection) {
         canSubmitPost = true;
     }
 

@@ -97,8 +97,8 @@ export default function postingReducer(state = initialState, action) {
         }
 
         case POSTING_ASSETS_SELECTED: {
-            let assets = action.payload || [];
-            let nextState = state.setIn(['post', 'assets'], Immutable.fromJS(assets));
+            let {assets, canSubmit} = action.payload;
+            let nextState = state.setIn(['post', 'assets'], Immutable.fromJS(assets)).set('canSubmit',canSubmit);
             return nextState;
         }