我们网站的一部分包括回复其他用户发布的评论的用户。所有回复（输入）都绑定到相同的ng模型。在HTML代码中，有一个使用ng-repeat一遍又一遍地重复的表单。问题是，在用户发布回复后，表单没有被清除，因此回复评论的下一个用户留下了一个包含对前一个用户的评论的框，因此必须覆盖它。
这是我们的HTML代码：
# Idea: put both in long form and stack on top of one another... then merge like that!
sch4r <- as.data.frame(subset(school4, select = -c(mathscore)))
sch4m <- as.data.frame(subset(school4, select = -c(readscore)))
sch5r <- as.data.frame(subset(school5, select = -c(mathscore)))
sch5m <- as.data.frame(subset(school5, select = -c(readscore)))
# Put these in LF
sch4r_lf <- melt(sch4r, id.vars = c("id", "selected", "grade"), value.name = "readscore")
sch4m_lf <- melt(sch4m, id.vars = c("id", "selected", "grade"), value.name = "mathscore")
sch5r_lf <- melt(sch5r, id.vars = c("id", "selected", "grade"), value.name = "readscore")
sch5m_lf <- melt(sch5m, id.vars = c("id", "selected", "grade"), value.name = "mathscore")
# Combine in one DF
sch_full_4 <-cbind(sch4r_lf, sch4m_lf$mathscore)
sch_full_4$mathscore <- sch_full_4$`sch4m_lf$mathscore`
sch_full_4$`sch4m_lf$mathscore` <- NULL # deletes
sch_full_4$variable <- NULL
sch_full_5 <- cbind(sch5r_lf, sch5m$mathscore)
sch_full_5$mathscore <- sch_full_5$`sch5m$mathscore`
sch_full_5$`sch5m$mathscore` <- NULL
sch_full_5$variable <- NULL
# Stack together
sch_full <- rbind(sch_full_4,sch_full_5)
sch_full$selected <- NULL # delete this column...
# MERGE together
final_school_math <- mutate(school_lf, mathscore = coalesce(school_lf$mathscore, sch_full$mathscore))
final_school_read <- mutate(school_lf, readscore = coalesce(school_lf$readscore, sch_full$readscore))
final_df <- cbind(final_school_math, final_school_read$readscore)
final_df$readscore <- final_df$`final_school_read$readscore`
final_df$`final_school_read$readscore` <- NULL